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 0xc553838be72950ffa386bf8fb61a2ca631a89e75d398811e10c64bf8db17754b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfd19286-7270-405e-bc7a-95e48f6d513e.json and https://artists.proofprofile.net/proofs/artist/cfd19286-7270-405e-bc7a-95e48f6d513e.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 0x6c7261d970cd94aa0b859fa80a10ece362250ac9e6fc98d2dfd7f56c4b70673e. 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/DEHC81900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad7bd609bf7a5c30f3924e79cafedaed04f044ea0077767bee72079c5745f13. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZG82111530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0709b65f09f7cb370a5e812e4e967346ef343f9151477fbc748cb1293b5a3a1. 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/DEZG82111390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6a119fadeef6e458786e467ab621ef04391066cfa2c2e8b4cc3cf10f742ac6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZG82111550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deaca0fadf65eea107b3a998e76b9cfd3b663bbe364b224c4ddedd428418454. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZG82111560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd13e54e79b3a7826ab4bf1a6f6c14f2b493169a51745c63816520ba4b006571. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZG82111410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539f3be78a6053fa2ce1df3a76fddcd9ee9d1436e8c48534a036f1ddb433025f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZG82111580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf593af686c8fce3b177300ad5ea57605afcf2f8c6e7863bf238cd068416a48d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZG82111590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe4ab886f58266be7c69027d5d40505be6cf1d951d9f3f63039beb8545c7bc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEZG82111450.
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
Lovers, Sinners & Liars (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ac5349b43c83bd3908842ebafc7f0e84c20300947fdc6f4f1b1956461c6414. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEC261993902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee3323cb7921bf59242018cf394f34014ea697f1c2ec553770b55ea74a6678. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEC261993904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037cdf872fb2b0143e008b1e240b7bb358ae258f3b11d5f30a448b992e2cc16. 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/BEC261993916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c98a5e3a5de6201d1221687e46919196272f5a4d20302231c268df4cc53e4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEC261993922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369b915528364e034a94ce1de4eaa17039dd8f6c8a7e2f360894c6cdb0c0ae8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BEC261993919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50e4f7ce38ef2f698de8786ab3182ff2a30e9fa39182f20e599cfac5278a26f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DES131900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842fc3e2b3c93cd07a26631d959621f09b47f6e09f4ce6b593755fddef888db4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEAR42056418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010b80e31b4852f0b1ef94f21366d140837beda0bcdddb1ffeb202928203bea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEC262503701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17c62df8d703bbd1a39724c3ea250ed91481e43db7b97037d5e16b8a7f21a99. 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/BEC262503703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167c57004cc8fcdae327dbd4124499377d8b57775c56b5f9cc7d0c904395e102. 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/BEC262434208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fa25284d6c60d3379036d562a3aedb9b475e8f53bf284ed695a5e7d61afe2b. 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/BEC262503705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957a65085e834cda4f6018db076983e92661eff5c73e906af61322d4404840c1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEC262503706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6556fa1b266edf2d5b444499de4273cc69a6bb507c58fa0384347eaf3e7ef5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEGQ82506205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066f290f073d8f52c3aea79743af4ae23689ae3300cb7ac09e6da450911c263e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEGQ82506206.