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 0xf51757478780165408a9abea4f4178f230c842faae88910c10b1db10485e62f1. 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/6fd847c2-5956-46f0-a6da-08adfccd6ec6.json and https://artists.proofprofile.net/proofs/artist/6fd847c2-5956-46f0-a6da-08adfccd6ec6.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 0x96ea6068207b226f6cfa09fa1084ae18ffab4547b1423247e944f5f69d0acbee. 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/USSUB0310792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f724defb4695188153c4ae136d8c3e1a3db92c54314c703ec903b2758b94f7. 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/USSUB0310794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a888d6cbf1e8eb4dddbf504cdc53ee655f6ab14af157754a99e0f9fd50411. 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/USSUB0310795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30dc653bfb0972ce1e3c926d44fd3c2ba84c0c29976f3780251a3626f3c003e. 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/USSUB0310802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51da99b89472065e6ea2688ded5eb595404c0a4aea19c04a6e7a3f616d727fab. 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/USSUB0310804.
(I Feel Like) (Gerry) Cheevers (Stitch Marks On My Heart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b5a50086e07b13062149d5852e5fda0e6e792c2242e3da61da1a653e08928e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USSUB0310805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38179997f3d819ed2da9c1e089f857abe31e7d09e116527fb85f45308e6deb1f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USFW40501601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762cc515e3fca07bad9605311217d08f2eb30801239f032a2450e45e7cdfb98. 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/USFW40501602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabcc82599477d6a3883985312443c43075332a336a36e65fdf19c6b3a69f992. 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/USFW40501603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935b5aee9a77f2bac6d44da98e52d8bdae57d1c4d1f2fe031a5256866431a12d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USFW40501606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68abffc91673a4f082dbee58bd695304d33a1d7932b44d818a5d5e14aa983098. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USFW40502802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf23821d700250635404e7de59489d378e73a44fea1e9f3abfb5baddd9ebc4. 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/USFW40569201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c9f01d637ae10af2f981283a9c6fd139b64f7efb236fde4d1ec9614168a945. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USFW40569202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58407109f7e07d3f8c771e00e5b8dcd56c06b151b89748defc8675ef57d2a2c8. 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/USFW40569204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2856345de7aea54300425cc75c4fe569f0e83ba4c2ccf34b1326c09c853cb067. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USFW40569205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df890b88d458322f08ec41886234a1d3e0e481df12ddbae3cb5d45da388308. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USFW40569213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a2e242142161d7b656328fea5379c8e7ff460cf917bcbda5827c29217f2f3. 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/USFW41176603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b189b23eaf858606218ac091ba2cc614ac1febdd5d6db53300cdca5ab37149. 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/USFW41176604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87557061714f56cbf8f0fa8fa5215b1dc1851ecf655eb0521b29897befe4f81c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USFW41176606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65950132a5c2ba050d47a09ea7e5fd5e13ac9be73724cfad0ddc262069902c09. 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/QMBZ92317260.