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 0xba49112984fb529a5d8bc28434985b4fbfb9a7c9ec0a02d59c41d40de912f0bf. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/172331b5-5ec2-4b6d-a634-cac1b6ca0cbb.json and https://artists.proofprofile.net/proofs/artist/172331b5-5ec2-4b6d-a634-cac1b6ca0cbb.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 0xb02c55a16426646af47b16d34fc64eaa6dd70a050584bfdc964869308486f605. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MYHY12150120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fda5b2323afa62a2b5e90599998268c3f350bd42970a93e41c8bbda806681d3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/MYHY12150085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c0b01715f3734cb29139ca383ce547318340b5aa15810c6ce8b645363579b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYHY12150086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650ff3c3e73b68d4654adf03d68030294b033211641541ab13f4239061c94202. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYHY12150087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd2f4a1de47aabf28715a21f9633364e9fb32078203ead5c0ab5a65344731c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12150088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6348837f9e94e49dd97a2ded80d71da5f4fa02f397b8ad307f81e5452dd6700. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MYHY12150089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51826b93e005311cde5a82b0f2380361334cd41a6563f7bb5c57bd23b1355f61. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MYHY12150091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe549365f643f41850f2aebae48323460c7f6c60cfe84590d863dbebb69daff95. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/MYHY12150092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129e3f9cb8e04e87ee279eb8738fb937ffefa40549bdfdd67bb625ca39808712. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/MYHY12150094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f36b71d627415c06c8e8902b90fea8a2848690760386c8482e8aa1f441398. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12150095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c25890323f902d80e3bbe4355195dceeb511b348960c1704f74c6e944c52a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/MYHY12150097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01f5bd225792e462df66cfffb3d91e5b7e6f7acae4a12decd7ec9fe39eaeaba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYHY12150099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851fcbcdfaa81b2b4d03344fcc05b3087938a5dac3f2e88dfc38a21231b5efa. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/MYHY12150102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f76a55a8b79af23f406eaf7d87ee774cfd281918f3e4537f99b34ce41cde6ea. 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/MYHY12150103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2268aed426d0dc3a92052cc05f986af6dc7a7ab89768ab30f7a79033e884c724. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MYHY12150106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d30367d64db865bbf333a282fdd289d36e90e9c2cfe651d24d08d29e7b0f66. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYNS12345522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f3e0f9a2df9bab8ecd6f1c2cc470c113db08bd4e8e40bccd42bba6e3c017f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/MYNS12345523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c8d5fc70735ea846542fe476e1024bfaba74123d2576067ff92b0d8d9d01b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/MYNS12345528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbdcf9aedb35364b5b4269816f36d939e68ec27890c2de7b3b14ce99b2233d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYNS12345531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c25890323f902d80e3bbe4355195dceeb511b348960c1704f74c6e944c52a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MYHY12150097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a6b82d36a3596746b82edec410082d7b7486ed342f569758fd1b2fe2bd78c8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MYHY12150098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c30d809facd59d6970a7a0a0b93a69c9139ee2625a1f6f0a2ae17867d6e1cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12150100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1bf72a8ccb72cf82a99ad8045b47d1b44e7e49e724d6a310cd8cb2152744b1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MYHY12150101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851fcbcdfaa81b2b4d03344fcc05b3087938a5dac3f2e88dfc38a21231b5efa. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MYHY12150102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f76a55a8b79af23f406eaf7d87ee774cfd281918f3e4537f99b34ce41cde6ea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MYHY12150103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abfc6f8fff8a9cf3e42ec2c9e54e1c8855abdf9d539b3cb1f9a0fa104939da9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/MYHY12150104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d8ea3fcd711c3b469fb0878fc4bc34d4d142f376d13e4877bbd0291ed797a0. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/MYHY12150105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2268aed426d0dc3a92052cc05f986af6dc7a7ab89768ab30f7a79033e884c724. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/MYHY12150106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b978fdf58c84ac415530e2f8c096654dd835b0c57cdf8e9330e57f8a3b23e58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12150107.