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 0x276ff32207a5d2bd730ea0e5cad307263e2dd97aba0f809ff55778af3bcec4ed. 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/44a14753-a25e-4bc0-976d-3022757d6554.json and https://artists.proofprofile.net/proofs/artist/44a14753-a25e-4bc0-976d-3022757d6554.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 0xf46324a45a729881fcf605de7d86b7520cc45dc6cadbefbb094ac9d07a17feb5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESA012286084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7139f2e1bb8ac7d0ed9d835e0e2c45d7a30345a50d106f0a5af1237e6c776f81. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA012286087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f23708ed1fc440c20fd272b652b2bfd528871c0032d0ed901bde2e3ea48a6d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:57:59Z), 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/ESA012286088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7dd46ab61c3cb8f4753c4dc7436663461d30648cc82dd7874634874b9ccd07. 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/ESA012286090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00efc0cdf46520900281e60cb8b6d2d6e7d617ac0e431eee35fe52d6a4dd8667. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/ESA012286091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d2e5981cdbcd83d593b82be318534891962e67daefa7b8a9484445819cfa7. 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/ESA012286093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00d58559c9ab554d909590f5f4ffe0b0f81d7f96a6b2563707917dee078e8af. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/USJE72420901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c47d29731edbb099ea57bb92565c1e87e0c1eab25bffe07ac5f03e64fa02ec. 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/USJE72420902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bced288fdc38faf4633a8ee4bb08429ff87c0d451a033c5874889a758bc1e7. 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/USJE72420903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5472d1cf2c1fc886d6815eb4c031d734ead73de2b712503a8f1b90caaeec66. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:11:21Z), 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/USJE72420904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cefdcd1b24fbc3ee244b1f78478dbf7e62669ed756c5cf49bbd8ccf29c8170d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USJE72420905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4713e40c529fb867e04420bf9e532f51037db385957a937f434a74cc0799b7. 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/USJE72420906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968be16db07cf7727052f5460b35e2ba39e66dc323e6e4ab74868362f4a007ce. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USJE72420907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5456abd0185a82f7fa2ddbef3e6645a7906803ece5844ca64574bb829e288da5. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USJE72420908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c6dab5c28cc4afb84e3d688b65b6bc26e1995ceab38bd20f864c8f00b2ace. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USJE72420910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559357cbf3279ac4e79958defa78ded3119c4069f9916424b5c2a6739a3aaefd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QT3EY2437475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75486d4c67318a8ee9ec49c3bb47a3a7b8070d4fe098ecc19c24b0e21033554b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CACWV2104261.