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 0xd67e45c791711330b0ecb566fd3e37d5560cd279a7464979595919f058ff5e4c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdc82a1e-3f64-4d88-b754-5835f3edee79.json and https://artists.proofprofile.net/proofs/artist/cdc82a1e-3f64-4d88-b754-5835f3edee79.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 0x5645a360c9514525a81acd202810286b8059a107fb45ee8f2dd4ba087eff541c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTE01207590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49917e23f6503f371e159195d9cc03ceeb5b1caa66505fed71753c8823e296f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPTE01301440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e168a8d8ee01ec0c937ea6c67d5c7e219f44a07524a55a7c843004b1c17a4a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTE01301450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d07f1c8e7663ce668b812a0258cbb2dc026e5d44461dce5ea8809f4035f2f. 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/JPTE01302310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090be39dec01b1e0b6fca2fc7667e92e7c6806e32eb5fb625ef1c06935d7992d. 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/JPTE01306830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd037d5184f8834bc3e2f81e7ca66939a95a28fde45b5594a0fe70a72f780b. 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/JPTE01307450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ed98df1d46790208592e1e86f8af3c5442eb5f9ac6e5bdcfe4eb80291e57b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTE01308040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0a941ec3b13ac52f4a297ac38f038d398fdee7db74c106b5f65e22b7376f6. 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/JPTE01403150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1d1af4d74160a7adce65e2412f81fea98551393b53621c9a50fbe2ef712f1d. 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/JPTE01403710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41e84d81dbda881c3324a609e5e1b70ec325c5c117b69e8c216435aa084094. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b693706f4d69b68774cd5be9d67308e62b4672f1ef2e966a5606306da814efd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401401050.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7da3e28a448512dc1932ba465d9a6f5c69472110d03964d5625a0b549ab1c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a1d160435021abc342428c8e2f16486b8af1a9124833ce0b82c5a16a1f260. 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/JPQ401401390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1e4a6b2ff9ec404ce31c1dfb264c82a079d4c86712fa6b17cd37fe68695c7. 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/JPQ401500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc8201794d22f3efb3d60e8198f398a7ee11cdb69d409637647b00d756b151d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2deaa5627fa957809c61517ba35fb64112893cf6619fc303c62d0766416946. 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/JPQ401501580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee55c49798bfabb81fa9c039ce7fc05063f289e880874a123b56636746eb74. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401600570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7ea702703576842fed710470b22a28e49dec913947d525f087049342847553. 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/JPQ401600930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121d2d630707d4f73ab829e87c660850c9531a92367f06b9b29c2d0716ea9fea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401601280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdabd380ce49ba4578a6456a71c30e541f368c14b341baac12fe5cfe1fd75dd1. 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/JPQ401601360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a502533cc36fb2918d656ebc0ed1121bd7d556c02a41f1e518c57845441dfb9. 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/JPQ401700770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a518fa481454d3e92d2a5faa1cc23c156bdfaf06839d53170fcdc1acff5fb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ401700980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b504a25b658b97822355a33eca56c24aad5f3c69e615b445b53409abd166729. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPQ401800390.