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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cebb90148682689d26f75c845e80039aca13c9d1e21136efce6a7c815443709. 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/093ab9e3-e184-4e9c-bb32-2bb5f7fab48a.json and https://artists.proofprofile.net/proofs/artist/093ab9e3-e184-4e9c-bb32-2bb5f7fab48a.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80758ade11e77c2db3da70886273b3bf6a74fea795ebb6052b7db3f6da9adb3. 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/QZZ7V2451162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d5de78f645bdc8fc5775327bbc74c5fec793c90292cdd4c8741d6562b61a0. 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/QZZ7V2483711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d474d34dac732eb8b2c86607791e78db86b067d1092ccc01fb1726d07570920. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZZ7V2481623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087cbeec4e82a5e831dae976f93878e30b5ac662047683fad7b2ed70db9befcb. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZZ7V2488913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82782a8de5bd40b669b002b655e16984ad6d5decb3c8df560625807e8f95cf56. 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/QZZ7V2411505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146f04a30f18960d058411f43158901b733d786f9727d4d08cf42eac92dc496e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ7X2487303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9474dc2e79ccc19553c8cea9bfffcdc15cbf24a85ac7e7a5d6c0a331f142ce12. 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/QZZ7X2487345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab99bb4c33aa56a345b91f326b6e395488838d63d2e3017cfa8a09643768ea8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZZ7X2487336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c42ab29b3ef8b6281cd4033b729535988fb1dafb6713236f8b047d4e988c5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ7X2487347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022c2ba81570a4d7bb7d907d6c11f2a509660bc0fc7ad0c4543725d9c479a3c. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ7V2487079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb959a5fc01581dab6b010c4d990ecb2a9f10d1fda95c381ff18ab98f63eee22. 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/QZHN42540001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fae7bb844642e067347cc309b0a1a494580ed8c531dbad4945467df36ce6811. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHN42526745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ec6b196b57ea0cdc4916bbdeb7796161e1c2ae326e20086eb27a84c0883e21. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZHN42527593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb406c38ea8a175b8421a5ac84f40d2abdf876a6c49a38fc00aceee3204baee71. 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/QZHN52557357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f2e93cde159384d43b7a9ccac85a6be0796b6e51c6a92ba989dd1f7bafefc4. 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/QZHN52547686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003f48857e516143d04c2c22f0dfff75504c2de7d43c2155657d0d36c54c436f. 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/QZHN62548671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5993606fbc6f5e3d1f2501f68bf8b0b4173e48ed7125510c70d663acabf01f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN72559472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ea881e56f868f2abd5d2640bdc9303e09f00043c045b5e3fb857e396ed871a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN72565192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f9744a8a83c3d3738e9f95e9d8bdf7efe4b8e96d0e856566282693904859cc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZHN82525556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f0ab198a640e27bfe64497951941da5228ef17db3988c7d903778ebc128af8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZHN82511632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89113c682776e3c62eab486aa960d66e380ed5d0a113498a41c229a835777e26. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZHN82510760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880fbbaa631f66f06c7de2f0ac1a4301f51c194b10e2ea6f2c916e374a08b338. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZHN82533506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c058b32d6439820921cd9f5479f55017c31ab67fe32426ba3cc8004febff2. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZHN82511623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b0ea018d4dbd2b0f828ff52c24d8a3f64af6dfb5c204955fb146ba7bc7112c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN82505352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71132cc3a9074a9c4b1b694c61e5d7744996ce4f0cb5c2a1ae36d1cc466bbf56. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZHN82532369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587c77c44838089638e7878c2db09a004e0f60586d703e73527fed5c3d6826b. 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/QZHN82515417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47450a301932e3e8f49e94a5413e963a77c050258951d809fb20e819a6746c34. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHN82561180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f67aa9372edecb400edcafb4750d7ff523130b28a2eb33d5d9193619945f7. 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/QZHN82556634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6759ccbf85ee579da337e7b71dc1f9dab361a232b0e1deaf51e94cff706839c9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZHN92555891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745e813b4e7f304c29019a5c793e2f289155eea7715d7493b40a227953f1982. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHN52546699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f2ab6a9b356ebef9d002b791480423f55a32c8346a6b4f51ecb62834d4fac6. 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/QZHN52547681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b64969aecef3d4b6442de867d58a0173ba8ce7742588f528cec33fc638f9c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZHN62590617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15186ee28debcf4e016523627e28fb634893f06a7b257047dab5dfea1ea930a9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZHNA2578054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6f52c3692204e0c84a8d7ee964b6ba456267528a8f7197693e13152e95803b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHNC2561798.
My Baby's So Bad And Her Feet Are So Crusty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb913a9a8b6facee5ec724a1a4264d12e2a42f0226f1e54abe86e4ff56036471. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6Q2504853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9151b283e6ccfb827f78f54142c290940b9d4296abbe5bee570b35966f158. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/QZZ7T2527144.