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 0x4c0bdde4cc25442e2e3cc1c5400f6f5d95024d6ec380ae7319d46722c5c44243. 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/026e94cf-1d7f-43a5-9104-1a4f831bfc0a.json and https://artists.proofprofile.net/proofs/artist/026e94cf-1d7f-43a5-9104-1a4f831bfc0a.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 0x613b6198c772abfa34db5e287fc57bdef885da644c871e6318951dcc2ddcd547. 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/QZNWZ2310617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc621a6e62563c6e047a10637690d6c7124f97da77e708df67e3e65c969579f6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWZ2310618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc9b37ac46abb5fc014ce27cee51c17c2bc96741a34e6477cdcbaad43e7245a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWZ2310620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af8fbd623e90534e942be9978c736a10ab89498b943dcac29434afcda664a6c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWZ2310625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd73ea7a065b54be4d2f4a51a3a5528c281c65c58c7e0458bfe0904f52da0183. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWZ2310626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07da228d00b28634bee63fc868e2f55e68242fdfb6bbbc03282c805871ddb974. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZNWZ2310619.
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 0x337d57fb789c46899f90f6e153bb64f0d34a692d5c1c81a23726c6d144134c01. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNWZ2310621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6c78c0a72058eaeae4d1fe7597e970dba72d311aa1256a2b2796f836d79fa6. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZNWZ2310622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c597a9d81352e9b0107bdfaca290792b9cacff17005eef2263308e679cdee8a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNWZ2310624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb33fc3e24972859f789c85ef07e113924b1f379662c5736a442df918eb6d441. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9N2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d629aaa849bdcea67a95eb62c79289f17272b66b4654ca54bb5f6d239a7e5d. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZW9N2200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b38036e8c225ff1468faa2251ca20484154184ff61003a1fc823b0cb52481d. 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/QZHZ32288034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa06e87803cfe61e66e063104ed8a9ffd7f1762fce5c7c001478f9d7ec3ca9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ32288035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ed560aca5f98625e9fc91f1234f76516e539eb53635ff3cf97ec20abb481b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHZ32288036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb473ddefa33f675518d5a67ca26972b0181f94694e5906df8b3d37f91b6cea1a. 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/QZHZ32288037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730a764cfd7b4eeb1c93997193d4038df96cc61bc55835e6cb6f2defa9ce5b09. 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/QZHZ32288038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c05501e08d19e5117219e7a93e79047aaf548c12ef69a00b0d51e134e70542. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81683610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4978f58fc0c0f6e43d2e7c766cbfddcffb829d419556435504e28e79fcadeb. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USHM81683606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda313a5b44dfde95a7785156b10a80d9479995f4098e177f03c82e123c054b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USHM81683607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c1b1ab420ae0b88686e88cd0723078096dd50b9380326337eb475f39bd559. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USHM81683608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a86e21629e22c05dbfcf575fe69b86f797f2df6a306f2236d3d4b5ca19d201a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USHM81683609.
Kumbia Galática (feat. Ducnoize & Fricci)