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 0xefabfd40264e1509b0bcc7eae20954c3b0a2b5952ea822b6144f27586d5a1550. 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/5f5d322f-ef9f-499b-84d8-759c1845f98e.json and https://artists.proofprofile.net/proofs/artist/5f5d322f-ef9f-499b-84d8-759c1845f98e.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 0xe5f0d721188e142f12e753c8d13754f419b4b84f42fc27277b3f58c76fbd3709. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES71G1705172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2794802f8dfac2738d993526d72dde0e558f07355f149e1777f1d698ec916c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G1707609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5c34488ecc34d060c2927d7b5b5afbf9b91a3701a99400422b7fbcb8903750. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES71G1730205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13243f7f82daa4fa64e96dfdc171773e8797cca417cb593c700284766046c197. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMBZ92065709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb952976084477b706d757796b2e348ca8d9362c51d792c8f46276214670abb2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2102476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf22992582f39b4a8ff6fb9275c763265cac86a4b213a61dab5e4d2ad1a0f214. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:34:00Z), 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/QMFMF2106090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40c1049930b6b3d0dd758d218affc026029c085eba1523d6549ba5116449324. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QMDA62156269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9488c6fb11fe41e3e3cf4bd7a7fa4bd028c9002d259ba1b484c25659f63fe179. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:17Z), 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/ES71G2200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9488c6fb11fe41e3e3cf4bd7a7fa4bd028c9002d259ba1b484c25659f63fe179. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ES71G2200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e60bb5ebed8a7a6a658694a7a0d36590bc885835fab8f846e67bdd5f0e8cac. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/ES71G2201873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9644803f6af7505d793bb0e33a086ed92c5658cebdabb0bc68495511b38302d5. 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/ES71G2201878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3f36d02187d857d6a39eda6c54cb84e9d625accda9d4248f08e2680e4e3112. 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/ES71G2201882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee12d7684f923365afa3d4dd747419c2087a14d2fcd34db0f8bc72714a2b63. 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/ES16E2400699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0593ed858261f36662601c14d0a9f641e3cfa2c2af399fde11c3a9e3911c4989. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES16E2000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b617378bde50397b9358d290f6c16fa0841c971f6d907929404143d0303115. 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/TCACU1676942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dd0ef5d198d44ffdd8cff9cbff76dccb7e6e26d243312b234c6d49233fd20b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc7bf8fc3234c23058888cdfc39c2ea98863cd1e36250cdc749371edad058d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES16E1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efec9d40f879cb2156234bbf5536e15c9c2218c695e8d52d9a010e12fabe9b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3302b172549524174249e47e7d2cbe43b99311730def44fbbc1f184d3352c629. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ee8acf37a5b2565de9c42a8b97aba9df1400dbb5b0b8175179c356ffe882c1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES16E1900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53fae3bb95dbe59c38bbd0537ecca0af42f7ac7f5293d3da71ace80ef5ed1cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES16E1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff34ade227de06c701f3f173ab694f0b701461a8565ff9ca785f81202efbe5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9912aaad7bfaaafa1514bddd692e33d85f608f343eaf51668cf0fcc9afd4af81. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc06e570140c4e3de2ca3f6d8ceb7f0b6a103416113e0f18b5617bd82eacae2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES16E1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144451793d1bd175fe256534d8fe46a865fca5b90f88591b7e03acc559daa9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES16E1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6ba605544419f47d3efd21ab6b789d9c93ef61ad8aea679fb35339650cb0f0. 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/ES16E1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fe7dfa697b37043d068cb91597d93cceadb8abf0348f1938604f7c24aa9099. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES16E1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf93863edb77df1a735649b9cd1115a0180f015f649efc23f6d8b3c0a1649c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES16E1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618b22c0236c3ebc48a198fe12a37fd304b8372a4eb8242d0fb80a3dcbda7694. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES16E1900042.