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 0x56cbfe177f24e9bfaa024e1bc306884e797a42ad1483c1bd323e4b5c56e4827b. 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/77ff345e-0dc6-4ed8-ba93-82cd48feada0.json and https://artists.proofprofile.net/proofs/artist/77ff345e-0dc6-4ed8-ba93-82cd48feada0.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 0x91850c1beb74135bbed043555de05bfbc46a1bb34f43b94ed3c8500702231c4f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYOK1630825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a21c39bfb15052d69d2393ef050a59663a61673150d09e1df8b003d5ba7194e. 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/SEYOK1630826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c6f3f842cb131b836141d8b772a54e8c161f5dd91440658137a179b1d1754e. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/SEYOK1630828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5bf24ae86e6fb5f31ccbaf198b4ed6d9ec9fdc83a5ec53ae5fcc4d62ff87ca. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:54Z), 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/SEYOK1630829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1156c242011c110213baced198277c970921ee18fc176c444ffe61ce73daa937. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:43Z), 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/SEYOK1630830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc63b71e765b9d3ddab3ca2306e4df43067dddc3890af091582065333512bd5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK1630831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ae6e2dbb973c5eb92cdd738c1025c839a06bdc831215c1f1dc82f2d50afa3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SEYOK1630832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f1c04bfa815dd2996e6338e0291d3427705c89ab3ec7f8c12bdfba199b1f40. 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/SEYOK1631236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a970ac57f9b7f16651fe4126fac8b23626a7e4eed480f4e7a020566543a3ef0. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SEYOK1631238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22617a129af25cf2248dabc8b015f3dbb2a31e451bfee9831ea4f6e7bfd8f149. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:53Z), 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/SEYOK1674196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf459eebf01e5567b86e76f6b0d463cf69d0dc03bdee84af2baf2b21194b790ad. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:44Z), 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/SEYOK1674198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828b26c874021fcc7470c62354844894c2004ddb98378182beede8cfe373961d. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SEYOK1674203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f38fc003f7ba4a675e0cc9a2d79fcb8fc34105cfcf41969118dac98af3e23. 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/QZFZ41921585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8740332445766de325eecd7809613ee01063df53ebf69d1b84d366c2a306cf89. 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/SEYOK1736708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87de4aac3a09a497eaa35d12d6e5cda59eab7c83351888dc6ba32c2f97e6c1c7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SEYOK1774277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e667dcab06f07a3f61cbb7a622ab4e8268d789c0fd13356b63778fbcebdfc8. 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/SEYOK1921863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f691d6fd2c224814f4403fd30eb46a2bab4466af03389a34673889a6c8e9cc6. 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/SEYOK1954617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd69a9cc719d2ac1eafb512ddbf5ec22cc6466591bb36c31262086836d48843. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:32Z), 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/TCAEP2069142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16784ca8d61e9e78a9a821b59ff90d7ad1bd7b1b70b0834b7be734b68bb5d024. 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/SEYOK2036673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b2c19eb1d243adcdd5da9302ed906f6313fdf973cf94507d2b6b40cf9c8d5. 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/SEYOK2043387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b5841a2f222290636038094da65e550b90c35b443f6b4683b31ebcbf32d42e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:31Z), 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/TCAFR2121891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee8b09945c4f40a3479d74ce34955ce6d469e2f41564bd21c2aff2e7c68816. 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/TCAFW2138753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680b520bf02c81f5ccaca5a203673d5a71ebf9d35ab7a1c021f805e7f576164. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAFX2170485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1bc6d4cff5790942437cc973f4194ce5880f8b9b2a42c8a885f0da9a397964. 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/SEYOK2200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4745e6349590b6f5ea4839bb046bf3c53972a9ea7154029ff348a758e7093c27. 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/SEYOK2214855.