1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78a6b241c603a6dfb035cd8bab0704ec1d34fe6e4b6a979d4c151b4907036f5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/389ffc4b-d5b9-424e-97ae-e7d0b8ffe1a6.json and https://artists.proofprofile.net/proofs/artist/389ffc4b-d5b9-424e-97ae-e7d0b8ffe1a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58e8ca4ade75edd8618448276f71dad1232904eb9379385c304d37140276e3f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2240278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b9e3a2376438e84788ce4656d0df6e6bd46d9494cb37e30e9bfb0d457d5ab5. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2215225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99db49c46ff3d72a673512437571ecd30ac1c959c8a8315e020b18eb45f7b76. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2257269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b86e3cfed3cfeb4baafc47a1dcaacd6fac08b67053d0330f26ed867a85745a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2391762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e91e9ec8f0cbfce3de5cdc8282c0e108dbb7e313b194017773ede5338e8170. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2392859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c54d631b7a7dc33e9bba0a8c7526da8b346365e006710bcf84e3becad10ba2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2388981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3161d0db93f45b0cfb7ba8d18e27574b60be35d3af928adf2a0873b4a779487. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2323442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066b259949e39cf8f6e1ffe6bc91960c62815bf9af9b17c65f0e3f78def1226. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ8WX2216978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3b2e482684025697ce8b31ed25af36a625219049873ea2290e1c66bf6781a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2370085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c08123fb56b0c37f161ee384621b5dcad2c7443f397333b14616444fad96d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2303673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4cc52e3319bb464928bf9bee608ab5081941b6f04744c164253c1edbda2f7a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2369558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604091af4b890effc2b8c36eee9454915cfcc5a6e3da4ce6ed24ebd3167f1aa7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZSYP2348714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91546306b62cb81fb0f1288d255b7babd69a0677bedd5a8d04f5750e1394d0b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2338468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f84945b81efa2d695e3ccdcfebf88a83babb918fc4e5efb28eaf5a1547482d2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2382321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33adcf26b01d36eec18783bb237f92aad1db72b72f75cbbee8e9df6fa1ea6ee0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2381355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1972c20bc9f80956a39c1d2046a603874756fde0f7c40810ad13cacd8b1b0f30. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2348864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4964e9b0b1974635f9556afe344a2bb55ae94ae7267f0a0e4a392c41f656c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2308856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aaee3cd7636a0b1887f139572e6d57f2e8b6a63971833b773779e92cc03f4e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2324256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d567928ef6dbd80f4e78d30cf598526c67a6e144bc65d62cc8b8b2b15a7a6. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTLA2318758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb798089ed5ac5b7b45961bb49695a99dcd5b658b6c1666a62b421ede14242. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32245333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83fb4b91e5c3427b9523faf418c4a5bce7f9535ca29b53c61df73e3cb00c4df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2309405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0130bff4e30f72164843e22ebab1bd272064263b8de7ffbb8bf0d69751a0fc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542361603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65491349df71d3ea56552923416f8e8f4905021713b3191bc6256e8285f726f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542361723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf039b036e1c656fa60520e40dd3c96888686555d4d6439eade3d235aa8a27a64. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542362128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf509eb0bbeb785917f8d2b70563959652877cb7cf3d369ace5f9d25149dc6fe7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542362606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3e0562ed1aac166c853ba8af292964082ebc04cd00540a216281adf79e7d5e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e4008fa329cb52d598546610bb63e46defe9d140f0f443843b0bbf89f3019. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb34262d064615ce407a99bdaaf7deb5aaf3505c78d217a626fd0c6791dfd5a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a3d935485fe9edb183439d2fc7beaf8298ef49b7cbe2a44f4e4fb6292eb2f1. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695cf09c26dabf7a50ab4657872345238ca7b5b98c2fe487d17ec7de72e74216. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc65b38ef67d163d5ca55320adbcaad9f10758e5f26316ab11ab3c55cc8db1de. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c531d4006708034fa54d0d58d4cd1d7d20f63143fd4c2c4b95acc62ca9d0fc6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc1f12fd8a81072d44b79c0b6a2a2bdee9baa2fcf22ccc0a954a527013d7f3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f1bbf5ab6f1828e46fea1cb9b47e2acb966d7282c6718589baa24aaa2aea89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2307196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dbeb16af681dfb190cb022f4bff9ff90314f1daa28150fed664b035e6fa8ed. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122421051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82811ff78ab8e0c3e3bc1fc00355be67f235bd66eb5662c43988d95291ba8573. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122437892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28fe68b3f9c10df645c406342aaf34dc4c1d1887d4eb7e33575aa5e8360988a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2422364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b0ab985fa6e1480075b3a86e7d1d22068258a81957130d1652de72e944ce29. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2429756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc707a6d5a92adfe9679fb29dc933bc8d3c62489543423d4409d557faa5dae0. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2425249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b29ebfe4887e03c4e711efdd71f1793a358c8ded3603ad788379c5a6f4dd8e3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542419291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb93fefb8bb4a4d0811480696a20192fca0f2e6244f1ce4bb8af8fc3438297. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2443843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68179942224d661b7ea3c2bd0c23bcdd87513b544bc3bfa057a29f779875ecdb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2443845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798995fb2a96beaa873fe5d975111d7ad78e7d0cbde28b46911f024e911e7fca. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122486027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047f056d207ad693d33a058cd6c0bb2210e3597a17d953971c3a009c8200737. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122486028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c6ed4cb49842b2f98c821b39d15a612585cdb0b69d529fbc37f0be041a4190. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122486023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5905d2dae2e8fdb22fb79dab01e45588f1588c516c1c911f8af514a7e498d89. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122486020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337969aea03efb512e1e3d26e5f5f12dee56bf16419d809cee06ec6bba5c8b09. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2485719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c86be7e042e19a8e19f7227ad8c49d23bb0f3cc19bbe5259fa7c9bca06da59. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2480077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2350603aa5d67d5589e23e3a06315a0ee950a3db20a94d2aaff52557feda72a6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2485095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83840ffd045895373e788b74a0e5c147aaa0ca418d487746c1e92c808816af5a. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2402492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b0e5227dba7b179546e83ab984985d4fc8e50029d6299da4fbe5557bd0bce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2402493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d3cfbd3bca6847ae48b1f17a273f42446882b198c24b51281354d9dc76ee6f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ab3d37766ff42a6822be2c3c538b7d34ccbdc4ae15608342b505a6cc7429d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b60348daaaea2468115f22218067cdaff8e5d815a99f129170faffad9fbc2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cbd8ee342d03b9e5a9bf737fbd971ebbfc18014d104fe6c3af8488f56e825d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea474a6e4c7245fbc462e724a4f3d576a3a65fcf9d87cecef6051c294975f01. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce601133c842738ebab8d166530244a012a147868eac3e7e6367aeda449539. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76b81940e8d6007487b839a6a7b9079d101bf083da3b3282402465c98679e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d341b3f3609b0126d8885071f1bc9987de66451d8cf77108cbaca281a963a31. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfc8403d45cec7c6e90ad1fbff1d3c6e3fe67050e9b5a23d871d13bec07c55f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542435694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34a5df1c9f6fad276ff9fed094e7f2a551d17d1dfc62dca87bb4f7849068adf. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2402490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa689a405b4f2f0b3c09e877976dcb40a9757c09931725942b6f06efac3bfaab8. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2426997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a245c54dbe22f8ac1a54e20ee8e382d049abc308298765dacd9aef8ed00183. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2426998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7ed68d23768edf52604f7573a0bdca6f8b93b742125ebecaab5a99f121191c. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2426999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962422fb5f786a6e736299cdded87a34e3c06c2728cd4197537f267d36ec172. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2427000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145d6cd5bdfeb713d01c11d63aa119269e92ab1b67ca639c6a8248562f7bae29. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TLVEM2427001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6c4c87aecdf1ce5fcbdb82501c302df3e6cb8f7d200fe8bd9437ab8656737d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61e939e17541e8f866c09070be62d3e466a6edab75b7c516f3bb21b01d2f89f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4002c33d42b609b4d5a5c560f0a5c8d8f6431457539a5957385b3697b826e23. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1df1fa3321d13c7bc63ba81359f25d318c7425e6061d39a87aca1a7761e713c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949c9f835196fe641037a1edd03df6b9222016635a0ab0a3f6f2df3614eacc5a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSVB2503606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce7e9b657f050fb4f057a943cb0f594f34ee1f36228bf6c1625a71fd338bdf. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:59:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b06509308969c03d14178924de3841fb86bcdfc8d7c7e8d6458af4d835345f6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d013b679d6cc6ea0ffff46eb482fe9be3a0041666cb540c349b7d7da9d9eb3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXYG2500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703988c5d66a7ddb10b00e6b684915fa0c6c9cda23742195eeb7a4f337460f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a1be4994bcdce17845401018b6de0ead89b8b6938910e8ac79d262de683fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5eba61f68fae546155cef8341d472a11868d0100160c3b557c9f08900606e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e29e97d72fd2b0921095c73738fdf00cdd071eef3fda2eb58a4bba3d310a0e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd508ff8e9e77020be2d7d5082dc684421dda995068073a1d53bfd20dfd445a7f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703988c5d66a7ddb10b00e6b684915fa0c6c9cda23742195eeb7a4f337460f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a1be4994bcdce17845401018b6de0ead89b8b6938910e8ac79d262de683fd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5eba61f68fae546155cef8341d472a11868d0100160c3b557c9f08900606e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e29e97d72fd2b0921095c73738fdf00cdd071eef3fda2eb58a4bba3d310a0e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd508ff8e9e77020be2d7d5082dc684421dda995068073a1d53bfd20dfd445a7f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2457243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41904d18f482d2f3f045be054bfb7b1a52b4d5f88b984e427d86816a76319a. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEB2417462.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch