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 0xbecbdb3f7309194a296db718f913f34ba5ccc8e9401a50c1913b6cfaac7f32ba. 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/c19fba8f-b6da-4288-9ecd-0c3a579f9d03.json and https://artists.proofprofile.net/proofs/artist/c19fba8f-b6da-4288-9ecd-0c3a579f9d03.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 0xf68e299a6605d74d6d4bdc27113fe4cd87bd4f41816bdfcf528844bc15d9fe27. 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/QZS642308222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33017bed3281ef7e061189b297225c8011cd69064c88ed997f4f11ea0ef6c433. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/INN2I2413160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95a13d439f47a8fadb8916707120c06a5dd68ace8e445627aec4057e3597ba6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:46Z), 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/AUBEC2548035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f1860366a413dcc876d624ac5b6a41c45c181264929b62bd6f02f5eb6fcc1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:52Z), 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/AUBEC2548037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f86d2774ef33ea9994c8da8d5682e460a1e2b9205b0edcef8864f6108ab8a6. 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/AUBEC2550247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb408ec20e2e6e223aae7b1e69a430af962571b6fd637a92bf364d88a884557ab. 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/AUBEC2552172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f4868c409a88163e1b1180bf4b2893339416f72ca66e91534a5eecc993b3b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/AUBEC2552183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c845bb40baadc19a7bea4c1dd61a79948166d0977c470c7ee918b59c3958b61. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:14Z), 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/QZMEP2508521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf8062a53dc0497823e2878c8c0e56eb0e6b659e95b741f924f0516330636da. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:06Z), 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/QZNWS2506770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51954d72251f9695cddd09cabe29aca348fc755add92a7b85302dcd9c752ef5d. 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/EEHM52500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e74abee70ce8d413ca687633b31d1e93e7c521efd88ef0478cf101df3a978. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:49Z), 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/EEHM52504377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceee7112c991e2d2c271ed3ef9cd381e1c90b41dfdac55b7408459c711dcee3. 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/INSN12507197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe83ae40e910d4aad1b3bcf795896bfa4542fdd123ae5cb0f2044d559afb45. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:23:19Z), 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/INSN12507198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e94df3226277e310eccec536c08c8bb72a4c3b77b46302dba43060e34f23912. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/INSN12507201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c185675f08989566cb66f40a6f98b504ef1c3737f3398ef793ac71265c823b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INSN12507202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78760382d1f7f18e4a749733c11137b6b547d14ec086f0d7d909dd45cb3379. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/INSN12507205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b234f204cc109ebff842545f61d710a1e2e5a38f9389e191814bbf28be14b. 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/INSN12507208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb436cff3217779e55fd544de2a9b59ab55ce5f493d50d3f75d05ef81e902bf9. 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/INSN12507539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbbeeb04f2806ed0cfa86640ec39deb39d22940a6a979cb1f044a3cdc5c7246. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:56Z), 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/INT632505217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483840bd6adf5dedf442e14265428f14515cc937a8e4da32dfe6542f5caebcf4. 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/INT632505218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b71f779ad2c2fa7d68734a72afe8c71c43dae54602879f55d96067f4d3208f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:03Z), 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/INT632505219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052642d8e4c497c9e99bcaffabdc4a9c817e328664024c6ae88d2cbcf726cbf7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:32Z), 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/INT632505220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe703475b4020833383780bf5345c5b5cf3381b72c30701a881f650411cbcbf5e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:24:26Z), 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/EEHM52520915.