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 0xd48d3b93a05f27afba9b38d853a5b4c6a62e6034d31ff2714bb4a5660c51638e. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e997ea49-4ae8-4a20-8cd0-256c878f0bb5.json and https://artists.proofprofile.net/proofs/artist/e997ea49-4ae8-4a20-8cd0-256c878f0bb5.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 0x4ca4e691696051384907923ca98bacff53adb614b429abae809908ef86f78450. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBVEV2000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba3e02cdaca19d1f3adbd0359774524cf717a37e1e04d9ce27e43553338b4a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBVEV2000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d79078eda7a44f34d78a77a5f766ebb690e952b5cb573b56b6a47841e32923. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBVEV2000512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d08f5e8995beb0716057844215ae1b7ac674eefd787856561663f27d90a98. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBVEV2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a00acedcb457663893bee6041aaf492946a1e746506e4d7e8dc178aecb7635. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBVEV2500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a962821409809f2ab90f1b4d61263e5715b70b582a83378e3f543456735b124. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBVEV2500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d08f5e8995beb0716057844215ae1b7ac674eefd787856561663f27d90a98. 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/GBVEV2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132c18a7a31f5e78d5a023a53d8bcc5878e22d126f97749061424e7e724ce88. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBVEV2500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d93f58c6f098095b13b4e2e13586bb60f5379fb582cc2779f36b19202b141fa. 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/GBVEV2500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876929671e254e0f4d17db156cfe403c5bb51b02205e3fe58b146a6f508592eb. 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/GBVEV2500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d606d26d61f3f6d27b2e169e69cea035ecacc49cfb54001542d634098c1d51e. 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/GBVEV2500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9683d09d3a564db537cefbec90f19eb235e4ff0568ae1fa2bdb1529d5bc8a2a2. 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/GBVEV2500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8945e177e8ecf902a54da8221a4d88bb3616f6575e61c2ff7b36163e3af2bb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBVEV2500050.
Late Night Tales: Jordan Rakei (LNT Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee88cff4c3acd86b224f689080ff21cbc110d7c0749480240288edc39c2871. 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/UKA4Z1500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee88cff4c3acd86b224f689080ff21cbc110d7c0749480240288edc39c2871. 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/UKA4Z1500709.