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 0x044fc01bd18afc865526cf0108c1f155f64d7cd63019f18a6e77f357d7141fec. 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/ced366f3-be0e-43ae-bccf-c85b4e07c9ff.json and https://artists.proofprofile.net/proofs/artist/ced366f3-be0e-43ae-bccf-c85b4e07c9ff.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 0xd72cb5d2125cca024ad032989c1a2f383bd7f93136f620d5b4f1526d0cae1331. 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/QZFZ72026240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a205aade0d1342ce5fe8ffeaa8b9b7de401099a03a08c90d5e815794088504. 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/QZFZ72026241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d9cbaaeab4773df4fbd478255de3690813261587b887485f46a63e4af16703. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ72026243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0183851dc7bf5d57cf8684aa7188a186689a69ef1a0bcbe7509d967ef70656b5. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/QZFZ72026244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1514a2afb7c6f659e9ece0f55020392a3c9b4d0b83722ac3522cc45f6f73863d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZFZ72026245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5162f3884984eaf25c8260356b5dbeb1097ad3530422186f8262e7f8fc57f4f7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZFZ72026247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236eba275a96b59a377a93dcf13196b796117f2c52de2e291d60b9796df638b8. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFZ72026248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7f8fc50a95839e57d53699cc1fccf37d98d7c48d36556c6147134dddec6f8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZHN72460629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb8d13fbd0c4a1ebdb6ccbce7095f81f5293bae845b62505a58730a0bb36b1d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN72460630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6351c39c34ad3b8fffe3319fc4b5f28b5603f78faff4be928ea2364a4c327. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZFZ22396829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f988c9884e31f1700f60b2476871aba33187fbd6f4cdd635f995a760874181. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ4JJ1846078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32436a8b5ffe486b0163686c1e7ec9bd7f5c566b7149130660fa1330212ff0d3. 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/QZ4JJ1846081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2618acffcb5746c254dba33fcefd3897e70fed2e1aa36a5d84ac568992e20d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCACZ1771642.
Hurtin (feat. Dizzy Santana & Bootychaaain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd181b7bd8895847a01ad7125f6228d9559b5d834ba079f086ffd812b0e398dd. 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/TCACZ1771658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db0e6cf8d47488392dcafe1d624f025148eb505165f723b74144a19c8a73df0. 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/QZHN91940665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2d95f35bf6074e9d53d8621cb0b3c9f8b116807ba800c3678a4b634ad2a4f7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZFYZ1911490.