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 0xc4d1d8a89041f9de94ba34d42550e1d3f3d395e79b6cf880684dd6583658e068. 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/a01a6e83-0950-4e00-b6ba-37d7ed2e3413.json and https://artists.proofprofile.net/proofs/artist/a01a6e83-0950-4e00-b6ba-37d7ed2e3413.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 0xda30b91397d4bd3a7cd44f0d92a4ee23990c4a366d7fbad90615a2fb3f965c45. 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/FRX202570526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1cf3f9e60203900a579069e22f7146fee7e85439544424ba370539f18c747f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202589644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f255df3fd2edc6bf114134578539c5a7db34b9187b67b29f87aa4e507932c4f. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZN882214556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28461cd3e04d04db7f253b4d9ee57cf2be27b7b69378cb0907c28a42baeae3be. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR10S2180074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1afade45a58517f285499f68c10010b94a4905907339c2c517b255f1b374a9. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR10S2179198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845bc603652c0478e0437e87f467208e30bfbb65489bf88fdfd72d060d146e93. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR10S2180079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81058b5cc0315657d6e1a274fd1d5646e142bba213d789c30d21c631b4e16104. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX452154416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d33a3eef1429651b5fc6a5c3fdbb9f67f2213deaaa1c7c85434d528a6d489e. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FRX872144663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb771c8a3c1b00241c49588b6ca5b7e7d8085c1c6864f7a329d741cee7f9cd57c. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/FR10S2279148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c1641b79d86767ad7f59e8daae9b50abfd171d8baf477f2df71098c0e9343e. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FRX762223042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee261c63dc8d105c26f4a6070cede509819e9f5b2a15471334557a6dad13547. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX872346686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1445a74de44b867eb4c2643304ddc5361c6f41361f010ea9da73b0fb1571b900. 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/DGA082355570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57047406bca8bda1faf5e5cfd49b4ceb4976d4ee558982fe1211f1df6cb53e55. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR0Z50108369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9e10ca0b022913f27b3b2d4e92149d5320d03647db4673ac3d9b12ab07be3f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FRX282460515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848136c6b33e47e65789a50d4b5eca405cf7fe63be0f4ce1b7f083b6af859260. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX762493391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe22e441ae1b8c94fe66fb058b33f1d4cf6d83ad217c8525987e0c98e7a78d9. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/DGA0T2419720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9ef8a51a8bdef9efef6293b99d6aaa3aef6cc92ec5ad3c4d1e0f27c0037a31. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FR2X42543371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3163bdb67e5d37118afd8332de5ecb306aaea6bd03e40b9af14c51951a0d0649. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FRX202526289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a4dbdbb7dfa42e19c9a74eb58aeabdfa95f1084fe3f191a9ea02c7b4af6acf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX282501223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9197fde165f0ba185461b617f4fcdc7cd1d5c44f1ed156298784208b099ca236. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/FRX452591010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a0f0c790d4c0fedf7b298117c22a00f890dff42fb6f36ae692258ed9c9273. 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/FRX872507702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0aeea409824e04cf502d05ee7cdfb8df0150bcb05b97e33e57a5be4255f39b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX872551691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa9eeab345a8631de2abdff35e596679f3b0656fc3eddff399655ba70a07f89. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX872535205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d8a6f364abf3ffabf1e72e6e449546a8636e21786b9527c947ada33e5533c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA062518112.
Funki Bledi (feat. Al Bandit & Mohamed Benchenet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583ef6a8bf59dae66e16d6beb812d7631b77590327c744be678b4a751f76e0ce. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR6Q11500128.