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 0x667c028a1efdca6a91de33ce1f3bd5da505b479b64269cfb2bc015cb3e7dbdda. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/062e8673-6d50-42ae-a4e9-c3d4d867b623.json and https://artists.proofprofile.net/proofs/artist/062e8673-6d50-42ae-a4e9-c3d4d867b623.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 0x83d071f464cfec05af3e34969f7df13da9ec6af654ea6d22675413b809c4187a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:48:11Z), 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/QM4TW1825397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9143384be4a3042eb416a639e9e67d03b445fb01bdf8dfaccbd297435e7abf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TW1825399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a82f1d0eb2373a98d23608e9494a13753470e135a0d6f8cddc914d18c6c07e9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TW1825400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1176af91d517c46cdb226d6c1287924e0ecde58098cca99847206515c4a04655. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TW1825402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ec047cb0084931689af4993bdb8d0b4d6a73b5f5407b42b9d396a86871198. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TW1825407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964f00dd1a6c9817374945a782643108567d35fb4ceebc8787f4709aa6864fe. 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/QM4TW1825408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466f46d338c675b1166284cbf6d97ed138a0fdd838deb4b6b6982c1575760cd0. 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/QM4TW1825409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29632df0c9d95cbe22ea436113a15a8aa9ff9145e9ab26a3c32453ea05f95931. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:49Z), 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/QM4TW1825410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de40d8c8a8952653c254868c802032745e4f97aa882bf1dabe50b066bf5d46a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TW1884289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad07ea3969b565c773140f6151988bbb1e024926219360e2b7a58ea317eb23f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM4TW1884290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfed5af847d2989385e2c49def41a9831d68aa9d57b087699a515eb5f7c5944. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM4TW1884295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98056575d7530b4f5c7e451dfc57209ead23d4dc99b43d3ac2ca8e65e1f5e2f1. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QM4TW1884297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733f53cdf75e28faa9430fea40262942869fa3dde5630f80613525e6822b467. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMDA71863138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00099824f05ab85d6308a2c7806eb8d5cc250d0fe4d7d9a5abe58302b9dca88. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QMDA71863146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58e63efa9beef7e5439988ed14b8a25b4d517ab2b90ffc386b0848a68af37ff. 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/QMDA71863148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ec17d68db89e3cc3c1a51043210cb10c8eff4ca64dc04f3b218a7ec99e3345. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA71863150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a16afee2ad1545356fa8160782737cb354088b0abde55eeffcc3d7772405c3. 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/QM4TW1884271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0b49920828965b8923264f90fba2ed6bb7725511a4da615031fcae4b6040fc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW1884283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd543f5106ae08c3df47c927ac139a7a1e8839aa79c5e37c871690c83495700. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDXS1801433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d2d56ab13033ae9ac5326d492ce43796db99a01a76dbf41ea9540f08b7b554. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USDXS1801445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4eb5e2a6f841eeb709838727da4a30670830e75acb4b3ba61e8c461c0c20bb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX1994329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c47aeb2211fbdd839a5663bb7f5ec52ceb6856605d18c49756f103ce9e2b4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX1994331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f22e9affb4e2967b9617e2c7794306c4e1242a20e14857c8e60e705ef0f8a4f. 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/QM4TX1994335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed5265e0630fabb4b64d5497549f472af28a191ae316f3bdb0a9eb6854fcc3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM4TX1994336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4f833dd45ac6ba72f59a599cab3284d3ed5bf0dd91813c26b866aabd4d960a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX1994338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612b2711567ca522a66a394943cffbacc33bf813948dad915216fd6402fc7b66. 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/QM4TX1994342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71edb54c04e75a6d53993611e443ae25c8e68d6fc3a28d772f1473880afd2d94. 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/QM4TX1994343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0992146bc1481f09f4328efd04de164bea0058cb8bd80d8bcd997f4b51b864. 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/MX3192102695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235feebf3b243c602c1c2975ebf32e8b95805016ddfbff7b7d0f97421c2ce03. 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/MX3192102696.