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 0xe243ba08e2e044668a3ef9036cd92b9ab273d1bcbf3574f1d02ba83531e26432. 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/e2118afc-585b-4be8-9ad5-9956e02a1da7.json and https://artists.proofprofile.net/proofs/artist/e2118afc-585b-4be8-9ad5-9956e02a1da7.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 0xe395e5fd8f1c271a71198e4c35418021bbae4bab9c581d30a047a6986d9ab14d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM7TM2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8793b0b693b7c9dc5cd17401cb42d11c8659145faecab2949f8eb9b4d3457bf2. 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/US78Q1010069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd507f3312111c7f363817aefe13093f90a82c012ca7c69712d1395bac4e9a6be. 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/US78Q1010081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd297556aeee023aa9209c0d16f406e2c09f25d620b6d7dff7b1174dbfed03f7c. 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/US78Q1010082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8793b0b693b7c9dc5cd17401cb42d11c8659145faecab2949f8eb9b4d3457bf2. 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/US78Q1010069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd507f3312111c7f363817aefe13093f90a82c012ca7c69712d1395bac4e9a6be. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/US78Q1010081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd297556aeee023aa9209c0d16f406e2c09f25d620b6d7dff7b1174dbfed03f7c. 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/US78Q1010082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec11e720a0c6ad9b481f3d922d1ebe091a7dc9d6431f04a664cc0cfb3f6619d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBWTT1102101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d08353d7edf4bb476c148cad3495b01e44fcf699ee63e856cb015376d68fca1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBWTT1102102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323c53b0ed35d03bc1d959f6bf74db0ee6408506535c726c20b920f2b45420b3. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBWTT1102104.
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 0x5b54866a44e6934fcf18c7a87c20efe6aa97af7b3456dd988a00591231bda720. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBWTT1102108.
Sea Legs (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802e4b6101128e892dfdc07e96649ffcc8763e59c4117acff6395bf9d092622. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZ5FN2593576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb434517d679027b24c200fc965880008505a9cfa3af3e3217b518d84a95f24. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ5FN2593581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17740d288e2aae76409ca0cea4ce2fbf0d4fdda7c8e1cafe6c46e9f27810f4b6. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:47Z), 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/QZ5FN2593586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b93ba5e868acac2354834ad0958f608dbad178b5d2caf3cb346030c3da1227. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZ5FN2593604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00acb0fd4b723a1ca9b41cd8e81552e581cf44412985623514071fa6823fca93. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:34:57Z), 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/QZ5FN2593609.
The Transponder Orchestra 10th Anniversary Outtakes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45d37758c991b2c6b6d5b54b2ff867964b5c7d4d58ee518a6df043bdaf48533. 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/QM7TM2500002.
Of Course I Still Love You - Starkey Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9a25bef0a896261c7a3a113f00b07da1853bbe046d50da551d59e77cf49a20. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA371304668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4e5163f259f783b22067b2cca40dc6c289a6d09fa14c700d65ddc459124bcd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAHT1000112.