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 0x476e012de107d275880b9e3463102e1fb97967658cd29b3ef103b850dd1ea0fa. 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/69b6cb74-0e9a-4224-b847-1240e3b54f2e.json and https://artists.proofprofile.net/proofs/artist/69b6cb74-0e9a-4224-b847-1240e3b54f2e.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 0xe0d3c0ab2f89a28bf6af4cf65f4f751e6c86aa7ecbd1f4a2385f629db446e71b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USKO11800635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d767860b2d9e0489eec5431a639788e7b414f12d121884b2e1288613937f3. 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/USKO11800636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa498ad8aa78c5f38fa865387a9680ff6a8c419ca3fdca29ca071dd288ef706e2. 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/USKO11800638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fbcffbd01294a3a0c692e1b630569cd87cee6e880584ee13f072a4976cfa85. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USKO11800639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2172744748d4e472c302ddb63579537d8cf5741ad8b69c5caf1c888fbdad68. 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/USKO11800640.
Feed The Wolf / Norway Jose (feat. Devin Townsend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32df14f87504b8fcd439751e44d3b2597c777a56fb041729cb1c38694311aa8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USKO11800641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a81fa2e6dd2b094d8d6b397b53f48c14d1545f794fb52482b67ea73e9966ab. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCACM1680976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6258329cce27d3cc55f583edc0fd8c4174476512722c81703dbd92ed7704af. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACM1680982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e1230dc80ac2b552a9497b9434ac8ded211c4d662c3cd611e7c3fe9b539a7f. 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/TCACM1680983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94892fbd7c1c534c706c5f13fd8ea8d74f9a66a23261b0abf15b59a5940d211c. 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/TCACM1680986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc860e21585d0c57d3a816fa7f8e789782f2a24f55a1c9401c945745b7beaed30. 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/TCACM1680987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0b5e425636e9597f7e1da8ffe24b8627fce0734a1889f7cbb21f6a7292cad. 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/TCACM1681000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8e5194bf1ccb167df0831906623177e268e60b3f5db05fd8ff8f2ce6cabf5. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/USKO12100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad437ccd0ad29e9380b11505ca0d916cd866a2e41db85b0b99bf8ca2450173. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USKO12100397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc646a7509a109434739fc6343ed35b4d25708949d602e684d72ee9b688ef3599. 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/USKO12100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fd02860c25c452f46c0b415cbf0390805b2bf283bf413fa46e2f27e3f80fe. 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/USKO12100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377faab3eb96e4bf2c693856d559fbe61d8485d7e26ee4ae10c2c2cdc61a2207. 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/USKO12100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db6eb828bc6e21ee52e533a3f5d46e5c65ac3a53d79aa9c493384ea2d8857e4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USKO12100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8e5194bf1ccb167df0831906623177e268e60b3f5db05fd8ff8f2ce6cabf5. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USKO12100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aad437ccd0ad29e9380b11505ca0d916cd866a2e41db85b0b99bf8ca2450173. 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/USKO12100397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe935f437d8ef5d207a8e133ea8999834c7484e97e8012a81ce226b333d5c909c. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/USKO12100398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc646a7509a109434739fc6343ed35b4d25708949d602e684d72ee9b688ef3599. 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/USKO12100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fd02860c25c452f46c0b415cbf0390805b2bf283bf413fa46e2f27e3f80fe. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/USKO12100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377faab3eb96e4bf2c693856d559fbe61d8485d7e26ee4ae10c2c2cdc61a2207. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USKO12100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db6eb828bc6e21ee52e533a3f5d46e5c65ac3a53d79aa9c493384ea2d8857e4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USKO12100403.