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 0x3a975816d5a337bdfc294bf551b9b6347c85059de7a2b5e700eea1b78ac79b2f. 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/c83b7e54-2c43-41dd-8771-4e8f4892a8ec.json and https://artists.proofprofile.net/proofs/artist/c83b7e54-2c43-41dd-8771-4e8f4892a8ec.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 0xa33cd71952bf2c718276b3db6230304085b613dc3587961d8293b4bf9a6824b5. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/FR6V81989346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e499bef46d48ceb7f3de9c5ac77834e0ae7008cc6e1e0a7e51e332f8db81f0. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR6V81989347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556b859d66ea77fdc914a8e144e60f26ecc927dcc9c63a2549355c94df0fb6bd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:24Z), 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/FR6V81989351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef38ea2901c8b6ac61ce9d21f443a6dc99c0912c350ae33a7810429ea4f4815. 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/FR6V81989354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3507cba49df427bc31b8b6998e320d61a98ddcac0e681879045e8aad4a983693. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:16Z), 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/FR6V81989355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b3ef4da7d8ec64d75d789b52b63ccdaa75d2ecad9114301e09302aeacc7e86. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V81989357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadf9be833fd5c076d746f2d175eead399b3ae67df442cce2804b67ef725148. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/BRMVP0200584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27374031675f698b3c49d5e0db038d3005b9bc8fdfff02219cd4c0d82e61b9e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRMVP0200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e848516f714f1a211b35d9733d59e38046d561076fb140aaa1f01af00642627. 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/BRMVP0200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd993a5715157641197a1a8cbdbb759f1b33aa2c79f3b33d0a83ecc2c75d4b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRMVP0200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf429990117d707571b79f7f552dc9c4a0c82cbe317389e0cbaad129bfa557860. 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/BRMVP0200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419693a5931b09b3228f51f460a2d899b8a39fa449d812738a75319563ef9658. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRMVP0200592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cf8518333e284738e6337ba9546d0d01aefd50e31a3522158f8503b919e925. 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/BRMVP0200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653f85d27a35d90dd3dbc3c7ef694dc7064e9494c9c5d7af35c33ef3e64c9b54. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:24:28Z), 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/BRMVP0200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040d9f91ec915d2d172ef1a92d4cfa2fe171ff1aea7eea1a448cfad62de02096. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:22Z), 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/BRIGE0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8916166ae0d8bb48c8604f3d037ee7bb74b85f507323a16733bc7efd75ed33f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BRIGE0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aa988180c59be8fb9ad0d9f5583c67f58601a3ca160908c384d5e1df1ebf2f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:52:01Z), 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/BRIGE0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff61a7c4414348b17a816391757fed827099704798eecf51b34d76a14261d9d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BRIGE0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37c777c14b7a96336eb25daf7f6d9121283a2a9598293836a8dedd980e22a9e. 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/BRIGE0500012.