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 0x1198f1b130feff27cb9170b12c4ee1021acca5ceac6460fea3651838dc888492. 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/43f682fe-ec0d-460d-9f82-63cc481cc27c.json and https://artists.proofprofile.net/proofs/artist/43f682fe-ec0d-460d-9f82-63cc481cc27c.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 0x4a2f71d07e72cb183f5fc22f86501073c208015244c6c5984ff15d442133f126. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHZ62039907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a5b2ad394a3996f33fe782644507f1bb84620ada8127072958c727395fe27. 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/QZNJX2045335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944707aa9103166f1b9ceb1dee6c6a25fa18ecfd07d941c25713d0444384e484. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMZ92134545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85720c6af08288e36caacbd60758f6c64a5315d0c5b1520a93f9b1637aaf9ebb. 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/QZTPX2140704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b715aefc4fa7cdc75d6d04dcee7a0a296de2d19e988b6a415c7ed7e3493c4e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZMZ92355890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa91e27a994147bd098edf072a6cc0b5435594d6be3a4cad162e755a8caf3ff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJY2374932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f65089bd6ee669b7682537c1784119f7457cbfe1fe6358e33b195a75e904224. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTPX2361136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f70b0e2765f47957f09a8d10552dba89d892b4233a60a6f7bf5faba4f350b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5BU2459673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1083f63b2efb6f9d268dc4e2f1c4c98a44f52fc612a66e9d8f9617720dde1f. 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/QZNJX2565123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b5d26aa9311482ce22e7317c7b99eedd62807656897b8b0274319b9dbc0d07. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/TCADC1756225.
拉丁音樂合輯（騷莎、雷鬼舞曲、巴恰達和美倫格）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93391189362276e1cd8947dc9091ee1a55888aef3b4a66cb34a819d4f81b67b6. 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/GBBFT1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5241be8c0ee2cff7a42eabc0321d0e8c3620ca0611a16ad22424967b5de3c9b. 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/QMGR32298904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e7aa63471a66ccf40233ee63043d72baafc0a9883b8ea33d434e73664d2ec. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CLKT22103708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc44ffe1692c26d65f2e6849ac0316cd991a4d4ebe1fe663a244481504cabb9a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMEM2065731.
EL MENOR - ROUND 1 (BRILLANTE VS EL MENOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecba2b77bf87c1d1efcae631c63464461f909b55e7a0f5288b238ec783797e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UYB282482062.
EL MENOR - ROUND 2 (BRILLANTE VS EL MENOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f39ce490ea04cd56e708ea92b582f6774c415c0e3325cfdcd4e6db89b876ab3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UYB282482063.
EL MENOR - ROUND 3 (BRILLANTE VS EL MENOR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d0ddf8a8a0e9bf8ca3b40b5f9bd0f4577cdf5fad1bfd1728c01bd271f80fc2. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/UYB282482064.