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 0xc49816402c5a7f12fd24beae8a3889fffd62bcb6be444fef97d81159bfe10e7f. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d051479-7569-4dbd-8fd6-02042deb7a18.json and https://artists.proofprofile.net/proofs/artist/5d051479-7569-4dbd-8fd6-02042deb7a18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rendez-vous avec nos ombres chinoises (Edit)
Le grand danger de se plaire (Deluxe Edition)
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 0xb228e8730b6193888369540fe08684de9547613f1e7b0d27fc66c2f933a4859c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0T2435198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439d8c862fa8c13fd22d66389f6206a6d2e437e15fb45f800d7e0858c41c735. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202532480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbababf8da2aeeaf3c5d33404034eb278dca6d8be0f384c8bd3927529099f0cb. 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/FRX202532482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613c0f443d38b51e6a297cbdade8a8b3dc067c06dd60f2fb26740e3d7193af46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX202532483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7dcd82c299d723a2cd7b0aaa582da676d3aefbe28c3102cf3d9a245b31ee0a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX202532484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1275173cf0d9abba53787c1c24a0bc2697530dc8129ee06e8ee08eaa00beaf7. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX202532485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d2be9290d1ab47d3c88298dcc6246e43e2ed562a7742d6b2429e63d61998e2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202532486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2c79705e686a0f30ed90e78c33e1f9a1b19f87ca847dc55fe6cc6350f60b29. 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/FRX202532487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce00d6b537a368d99a51a018a798f6208bc983fd57af68d05f40591b55f0a85. 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/FRX202532488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d84d6fbb74bb1f48a337cfc3c0cc13d99bdee5970d96f997ef50998916d3d. 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/FRX202532490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd2de946c64b766736bb4619a2f249dc3a0955a289e5b504a800d6182b3d64d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX202532491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19595c1cc52c635210fca6dc8d4f5144e7654ac50952a5c1a384e2c4bb685ce5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202532492.