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 0x41ab5a828c9211635a61b58bcf33078886ec9231d558d2ec896f05f2b8578ad2. 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/55186c14-29ef-4492-a821-e2484efc48e5.json and https://artists.proofprofile.net/proofs/artist/55186c14-29ef-4492-a821-e2484efc48e5.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 0x1607d09039c3c5310d0a7c752846e25064795dce780813fd8bcbd19e78422ddc. 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/JPZ921911933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17d396b1ba91947fef4a088cef1ee8e72d93d72a4b8d0edd0459ea589f3167c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPZ921911934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9707165dac809cedfe81eda9a2afa3af946eaece37f2508623d024be753d41. 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/JPB602080095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28df1548ca5d829a128229334b54632629f50fa05a6be30532b48cbd3ebb5f0d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPB602080348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe576f73c57f631d6df29ed8c15035206cad489ef1770fb5b4025f17bc236d2af. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPB602080349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561162b75445d4d1d40fdfbee8dfa8dcc7a0899272904c707d52da334a56536c. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:36Z), 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/JPB602080350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81ea9e7f6f2d61aac118da52b617ad3de6ac081d239a8a468a1895d687360e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCJPS2246193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81ea9e7f6f2d61aac118da52b617ad3de6ac081d239a8a468a1895d687360e. 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/TCJPS2246193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb1afca7965f81389120b738f85b28b105d6a4dfb97c34d67f1990da81b321. 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/TCJPT2212440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb1afca7965f81389120b738f85b28b105d6a4dfb97c34d67f1990da81b321. 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/TCJPT2212440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c456908b94e23128afa0519019f27c82f0fddf975a5779513af545526aecc9. 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/TCJPV2320934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838df2c1a9d83b0d8f9d1d4e4bd1681b2e8a22c935510d6dd1b7b72cc3c09faa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPW2306929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de39d2150374a9a9766c04978e99023f09b5140c7460d88f2632b38ed81ed85. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCJPX2321360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbbe5297ee94e66456320a86d02883bc87090afe7ef64a551ae6bf3d1aaf86a. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCJPA2403654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcb5e1a22d5038eae4e4edd6f044ff90d526876f961380889b161dbaa00c3ff. 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/TCJPA2403657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadba65ede3558637aaffceb9a8711d342b43a2ac12a42373aaa329f5542260d7. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:29Z), 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/TCJPC2446905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577250cd86ba1b39d88a352a86be4642badeddadfbdecf7fbfa4b5b2772c493c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPD2403532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d77f7988de0e7a77371fd643d1ec4491ab63c4d5e7136d140d55e87fe1c7c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:07Z), 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/TCJPD2566020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c440a27dd28c2cc53cb17d41d5cfdea183813b8e05f84ad8e10636b8cfb22. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPD2566030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014297b573e405369812e0cf273fb0fc5cbac96e71d10e959ab429bc33d3bf4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:31Z), 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/TCJPD2587732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014297b573e405369812e0cf273fb0fc5cbac96e71d10e959ab429bc33d3bf4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCJPD2587732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca8a3be85e616b648114332bab9135eda9def464eb192d1cbb8f0607615178c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:40Z), 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/TCJPE2551010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879f402b27131f335d3be3abbc3ad75ce141460919d825cb26ac4a12b6643034. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCJPE2551040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4962f617494696f9f203ad3f3efe51bdc9ce6c70df9953ef09dfc2946500e739. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPE2551103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bf440e4f56c96609810fb7baf3bfdddc071e0f1418b6dcb4a75c2ed87b819b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:33Z), 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/TCJPE2550933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca8a3be85e616b648114332bab9135eda9def464eb192d1cbb8f0607615178c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:22Z), 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/TCJPE2551010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b64934da434f749bcc3812dfc9979e0cb118fe597fc227bc6854a6fd1ecb800. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:25:06Z), 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/TCJPE2551079.