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 0xd1736dd0fcd112c94b18038632be30ffffb214755a4ae01ac2519f0b5d3e4877. 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/7ac56887-806b-45f1-99dd-10fb3814210c.json and https://artists.proofprofile.net/proofs/artist/7ac56887-806b-45f1-99dd-10fb3814210c.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 0xa3fa9e2f157ff32732be8c8f8a7db7d6b26a7d0a0ed671b47f636accd5f395cd. 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/GBLV62306370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a20e1a96acca874553ffb94a15d2bc17bbacf9c1531cc7b41fd8774d09bb9b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BCZRA2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896ed4a2ebaa76f36b07f4a5da7edaa61560a3b2956f345e0c2c311f78b53e7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BCZRA2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62b2820ed874f2d5b5532c118313f82687d7ff8e1978a9d46a5fffea41226fa. 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/QZSME2301066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb2809f03cf13de8d6a30a4a2c40edfb88c17ad27d233537e69192cd595e3ee. 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/GBKQU2032787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5678eb63dcdc333e9af83fbb1bc27d3f229f3e49ad22d8393b0e6f3c72794dcb. 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/GBKQU2480154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef91889ac355d14ecf27eac041ea886ec1a51a309f66b0c08908a41e491626d. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/GBKQU2436957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a9814c004d7ff1cd3d2be3df4e421404baf5b34f06f19502f61dcbed905d3. 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/ITV262400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a85c82ce9e86981f01b299510fc53f5b4369922a5c57c28107a03c4333a3b25. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITV262400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c948150d339e8a065537551d9a67cc17612feb1f51963f6dfe173e9eee137. 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/ITV262400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f030bc876db12633960a531f567aa04367b59816e488e5a7e7e1066552dd3. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ITV262400207.
Music Is The Answer (Lu.cian & Hippocoon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d997325caffd2461495f46a71fe8710c88822c4cf7cdfdbda53a92ac148b33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS1Z1623008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7ff8772c20063290463c3712eb714dc9c64a3465dd0641fe17579801e3ee5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMDA62400432.
Toolroom Radio EP763 - Presented by Alex Preston
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f47397f30cfb89bd84acc94fe66b8c027bdae67eb250e58990f4953399d924. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBJAJ2401558.
Toolroom Radio EP763 - Coming Up - TR763
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc896f6892c3229d1f80c6f17c10ba883df44c0c65663529723190a3d7fa5e44. 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/GBJAJ2401559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f7ff8772c20063290463c3712eb714dc9c64a3465dd0641fe17579801e3ee5. 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/QMDA62400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced86d4671a1dcc9cbe5de3c456933b830013fbaba3a3e9fadbdbd1d6c21b261. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZZ8A2462475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd674412dd7fa6d6cc559ca2cff5047a4e40d06d109ce410049d7ebae91a517db. 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/GBJAJ2401561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16352b8c57d304333b61051599723c42a827b93b7bd55bd3b988986a4f294ae8. 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/QZZ8A2462896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5c191b0351605986118b77a81cf1f43515d6fa0921e2decfbb396778d173cc. 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/GBJAJ2401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa2a3d0a81a83150d3a47e0f698b97e7d377523d90ae9802d807635988dc83a. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBJAJ2401564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5ff00af3dd038e0f97d1d0d17286ead7826665e8dddf127e632411dd720eb2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBJAJ2401566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f14cc5aac1c469341a0ef8037f9392d6cbb8b0f2e7b91643c6b64a2f9915e. 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/ES94G2425003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fdbd59358b94645dccf263c3e9e29cf5afcb47cdf8a3d1d53a14e7d80245a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBJAJ2401567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dac7edcad44c8088fc7e4b6b3c2abeaab2e930e8fa313a3612f92c2e1d794b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITSV22400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95010bfeef06a8f2a90c1dc2e74144ba1f8655d0d4a08e16e81f4efe23d8fa4f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBJAJ2401570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d889226790e49403db186014be97954d3e303ba7930321bb1e247f32c38f31. 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/GBJAJ2401571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9d2523962164ac57a6d7877cf2dfed6be0a7464d509fed0cc275765c82bbc3. 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/GBJAJ2401572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe534a3bd4a4022455d131ab8f8013c08d13e9c137df3ae97711d4770714d281. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMBZ92473673.