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 0xfd7de1c825674920a9a2cb120957f307faf6d957b078a5b5180dced2a4610ee1. 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/5682fa60-36f8-42d1-b984-0e637d8f89c7.json and https://artists.proofprofile.net/proofs/artist/5682fa60-36f8-42d1-b984-0e637d8f89c7.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 0x0b51be1f4bf77883173c07adc9c8bd92621fd482a1467155d032f785cf7a94f9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:59Z), 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/QZWFN2473028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba5fb49906b7707cb5611aa8ce33953a693f3444b7e8f6d21d207146e516f31. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKXN22521371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990aa72c82010f22fafe198767d9bcdaef3e2d07c0d59c61ce226d1644c6e57c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFR2413062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a34033023361f8f25a9180b8da179c29cfddfa33c6da8aaecd5c8dc239383. 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/UKXN22521372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9422d32cd423ac2f5d332a1f0789c20e5e392eed0652515dc234010557bd4249. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:21Z), 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/UKXN22521373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad7cb2a20cab98a881fcf4fde4f6d8d4f6a6cabaafa2ebdd3991dc6f70c92c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:52Z), 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/QZWFS2408485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7730d0703b9f1d3c4d87c11441f201077ab5e534fb01ff2f222d2ffabf86af18. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/UKXN22541778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d8c6903aef48bdfe3a6cb6c31baf6b2b3c3905a56ff7d8f64f1f37e6427c4. 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/UKXN22543904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6e404736b600b8be534437ca82b8bd2391c7ee842274e013430638490fec5a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:39:02Z), 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/UKXN22544788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13411aa350887453c88e74574b95e3314265033b0ee1ae7053d453736d9385ec. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:55Z), 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/UKXN22546738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cd2d4d91e236191c641c060369bcdd5e2d8f0f99bbddb96a69350afb0d180. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:20:08Z), 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/UKXN22546813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705e21d2e7608db56c164e221f867057452cf7f3a5b022cf9825486f5ba18fd6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22546749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ca97e022287db62d4b5b6cf8c46902a3e6e0fc0d912b3247bc15329c0c61b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22547573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff863684ecc8f04f8f8cf287fc217424ae13605e8c7fc99791a07e56df94354. 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/UKXN22552043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fb764900e5e2a85c2a9cc1705e82f480a9f780bafa53e105f3dc5aec919d86. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:53Z), 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/UKXN22554652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ae817345f64ffc0f51fafcd27e26c0fbfd61e5c1fd795c7050714e4c824712. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:31:01Z), 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/UKXN22557393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c9b1417205692d034ca7a775f261e869b835929640696e17b1b24ba1f7155. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:53:23Z), 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/UKXN22557556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef7ec424fdb495d6ca733f0b9214c2ded63f99d1ccf99400de327075d0f4fc. 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/UKXN22564083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf222ab937c8f35ec60803b8fdcdc3a4a455e494f8656fcefa3cb68f9780870. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UKXN22564117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef842e34e83f90f1e1d3632d8df245dc108d6a935ae7b85a2802139a3eae49ad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/UKXN22568236.