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 0x0c4afb822023e01897153c5193f7b889778ff838f4b03c78da00169c843bddb8. 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/9b86d99c-97e7-4285-b559-686c11ea8dd9.json and https://artists.proofprofile.net/proofs/artist/9b86d99c-97e7-4285-b559-686c11ea8dd9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Love Yourself (feat. Pako Morín & Esteban Quintanilla)
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 0x9b7af9a6f182889dd7c77a9a3ad6aeb1d8bac2f2392bd0b2d753ca836bd27b98. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBLFP1653878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5680b105a1bc0b9e2d31aa6c7c878049f58024c8081ee205a08cd8463adffa. 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/GBLFP1653880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68761326ca0ba003cd9620c88c04a16c8720722aa8242f5226ddef4a7d98f90. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GBLFP1653881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6513016290b4d3cfec501ed0ff4318f75fbca00cf1c72809a4fe917deac4d232. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GBLFP1653882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5eb1d0464798b9d29b63fbe16515b57a96e89af61070cdbcf85ae1fd4ca7f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GBLFP1653884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a0824d6aee40e9b829a660f23e134bb5d6dcafb573b903167f1996a23fc173. 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/GB8KE1854166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b0fa2438a880510ba3030eea6001db6b24d49cf3d6367772c9538a0a5fe026. 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/GX53U2076089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5bf4afd309f6dacc6af9cdd2027373e68fc4d90597e8a8227b248b4e723f9. 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/GBLFP2218050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009c9316c009c89d2ea94c6c44a6048e76a32d234c0a28738cde25c8d5525bd5. 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/GX3Q92392224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169fb3b9b45b6114bcc13e816efb4a7f3f4a23a6edde239bfcbc3dee1a239023. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX3Q92383573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9226c53528976145f856a62c913fa140f1e9e5c727b7c62702b3c4a2042f948. 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/GBLFP2363994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab252d1b2a356b59728b5f77dc6da0252150903e58f2d9ca50aa0b9e2c83de24. 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/GBMA22338537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708ce0697c00e44cd8ae49d5e3c01fc12017f0f3a59aac6454f657ae449418c2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UKXN22402484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c50921ba1e22332c9f23f71fbc5d1ba1f197339451f5adf53716581d449f91. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKXN22429425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478f0724f24770332e29a9b4f1696b87976c33063dd3c1bc66672a0c6d0cc308. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GX53U2699815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fea3b2ce3728db17609703a7f043cfd1102562a4901eb5054368e44795ff19. 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/FR59R2251905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cd56542a5c2cf8fca149e303c75a6ac9696b7284d9085ed7ff713cac1ac206. 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/GBLFP1533695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb021c5d423b23470f5a157f1b600d6dd34ef0f67147494fc85c4f6a3b4abe8f8. 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/USZXT2352682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcf9a4642a0b37a950c8b3d76d9a2ea0174e2413bc760ef472d66436e571ffc. 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/USZXT2455674.