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 0x40f48b492a3108ef91428242211beb2268562c4440c19617d1005f6426aa5aa1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ff7f476-9b59-422b-ad95-b516c6db83b7.json and https://artists.proofprofile.net/proofs/artist/1ff7f476-9b59-422b-ad95-b516c6db83b7.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 0x297176378b6babb2a02eefe9741c07ee0312cc7d9b5f7483c377e7df7e1c09f3. 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/CH6542092784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa5c69379fa4d41eb515218cc8dca46c43899f399ab8e504c96f76ccaba355f. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:17Z), 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/FR2X42142827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad66c0551614df945c6d4c96128f4599e575d28c88071dfd901cd5995f788d79. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR59R2144389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6928929c0e6fbe1d3f931c39578a3a506a350a2e33a3b81c866a4d5b3a8f680. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2120425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd93183388a1bd5ec2cf556ce2878950781037b25bc963bda5d0f8e9a78ea52. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282112304.
Sur ton terrain #3 (Freestyle kékéléléké)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a6509b7d87212f974be221cebe6a772556d5022dd2c18503b15482a853aa75. 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/FRX452154298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60386d92321c26e8613a0b2d0de8cc97a4ed766ded63e2a8078612748c64d7de. 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/FRX872120441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b320a90e7cb8485643d3779923267705df4513a469d65cf65ec7b0bb292a58. 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/FRX872120444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bf3834181bc188666de7af990d05fb5c4066a85660266d9ea7c76b6e29abbf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX762296215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7052a0f1473f1d2d513a0efbec6c76f42d950a8598fb562c0b3fb6ea5fdbcd64. 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/DGA052272007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba716d78d4a11ed95cb90327a3ff5f5bff987123d2604c7d95947c6f419c98b1. 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/FR59R2374581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddf4dc2d9e1e9983a1887d55e075cd258756b47dff32de2d0fad32964724f88. 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/DGA092219598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c7b76bb9667ae5f5bab19bc16826ca5cac5d0b1cdcde12763f27c63ce00db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2374582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3978a122f37c7102f7e9ec002a2bf78177dd0c149874e84e0a90e6f455e1b0b6. 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/FR59R2374583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dae8f53fa78e66e318b35c74996faf7cd73eaf758bf17c5b4eabed663844f29. 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/FRX282211326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc401c7025059ddf8eee418ed6d733b7c82295b82277a737e18de5fdc896f5414. 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/FR59R2374584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7052a0f1473f1d2d513a0efbec6c76f42d950a8598fb562c0b3fb6ea5fdbcd64. 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/DGA052272007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8668f4e5c67260f90a11e7e78eb71f70b9d73e35885cfafffbdc7044e942e6f. 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/FR59R2374585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492f35e27ce83e08c5dd2482dc3a2d6c985475490bd1cccd871bf4f277321f3f. 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/FR59R2374586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915b4e2f7f9561bc724b504e739420eb84acc587d12ffec6822ea4a5c7f405f. 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/FR59R2374587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694eecf24a2150f106fdede7a54754c0eeceb1d82002f3bfa66d6d2a3aa5bd06. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR59R2374588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bf3834181bc188666de7af990d05fb5c4066a85660266d9ea7c76b6e29abbf. 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/FRX762296215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6f374738581c0d6da7e0de27fda2a78983a525f5d4c6480243f74a8d8790bd. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FRX282372537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeeb2bd1b2fd09a7477b2f2b1289d03f3716151fe630f09c0584b601f462483. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DGA0P2303278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fd1601cd1c28d746e7f512ee89e32a33fe2f2416e11a7145b84cd55a4336c0. 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/FRX852203840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fd1601cd1c28d746e7f512ee89e32a33fe2f2416e11a7145b84cd55a4336c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX852203840.