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 0x452964553c903add71e1d23847a314363626c0ed22346c64ebcd2b44e3ebef8a. 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/183aa11a-8f99-4cc2-be47-6d722eac4918.json and https://artists.proofprofile.net/proofs/artist/183aa11a-8f99-4cc2-be47-6d722eac4918.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 0x808603f7fc30aa25562e773a964599bb6e2ffc69bf5394cf75efbde746565a39. 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/PLA552200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ecba77f24c051674374b7fb915bf4408948f643dd6ea62613f3959c754cee0. 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/QZHN82417369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e563efa9174af88e39b0f855ec5aaab301a62a432bd35d86f30f24ee59eea9. 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/QZWFP2336684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5530c7685a3c14d610e08afc018049904bad2e7000572abc46a892e82727beea. 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/QZWFE2326216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3025a07c5bd160e2834089858a83cd49f797187f95489f861dfe87c943a23b. 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/QZK6H2353078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157fb05481183bb078e18fd1cb5bebdc19a3e235f9611513e5397d288ae2d97. 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/QZHN92385532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24a88c167b618dfdbde61ef0f25d886cef1fded4c86e2527c58f11068001cf. 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/PLB382300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60463477ae78e830424bd21974370918097d361923783b3d298a07d1b552a6f3. 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/QZTB92233639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c6fb1546b61f5cf3c33b09af7169b698c7612ef5ac7a4ccf41ed581435fcc5. 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/QZTB92233640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbae3840a763d8615a5574247ebb0a7922df5235ed26755ddad39a6cc7b4553. 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/QZTB92233641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cd403a2e7bfd05bd73696684f8cd08ca52e5d3acfebc5a269bbd349d5662c7. 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/QZTB92233642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdd57685664525dc1e89a8301ab2d8fabdfdb9feb54f86812a7de798df4396e. 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/QZTB92233643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe8fd18e5bd66f1dc247f2f76afdd668abb55baa2ff579fe950b91139d7858. 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/QZTB92233644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2d4344f66498761ccd46c1e135d01bd77c7296dc62e3e469d71b488ba8d0ee. 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/QZMER2237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e09bb814b6a54096e347eeb050f698a205b27d697d4aa5d2207da949361a8. 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/QZK6L2254897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0a64eab80da775ae55036cabd04674f09d5977673bea25741c1736237db1e. 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/QZFYX2213163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b1d63115c2b498179f3a878eb85ac8ed958d6fdf81065b4b5ce6a41d038dd5. 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/QZTAS2193747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6739cc430cbbeda862ed44a9538d2be25c5274ce7f36cafb77876fdd9de2e6. 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/QZNWW2160559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa2e9361008ce37572aaafafcc54ae113cd6b0e68df67502fd39b0af37f9d8. 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/QZNWR2143435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeab70e4c740323ab19e5ca90241fa08886b750ccccdd338cb43d6a73adccc39. 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/QZHN92153928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc889ef8a6358839d0cdce8b4b6e8a9868cadeb91917734fa98901d9d2c4813bc. 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/QZHN82160764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ff022a2b7da1fb4fcf27db36dd248755369930325cc5898c1df58769270184. 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/QZES92164223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a166160e4ff9b3ca515bfb35797cb02e081f204adf7c41c8d8afd6aa199f1e. 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/QZES52149607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc1a38c35bade0460e78aa61ac343f658e5bcf14478943e9037631d8310d68f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZDA52169989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e192eb5aa01a15285ea50dc75c225c89e588f2320227aba8362c0f554c116b. 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/QZFYZ2180669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d2adca930d83be5482a62c34cc685a2575c5697a870c4068a11760d4451ac8. 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/QZFYW2173768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45ed3d1afb768fad38ff639bf441d06ff221b46398ee0c59e1cff5a7cdd47f5. 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/PLC062011101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c804654543b4cc387f42cef65add31089c3132779b0e29681bb2381330ede. 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/QZMEM2035099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b312554f0e92fb0e69d153613ba039624d9bae205ad3f5076b0aa9ad08c3b. 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/QZK6J2085858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321267d0d5d33bd535c6437681174bb830feac64779436539fa8ab248ed0d908. 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/QZDA62020409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe7a42c136087533347993dfe47ec80cd99da33e8de39743f0260a37f17370. 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/PL2B92400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e13ac4f9af505612f73f69bd238ed3dfdcd9090c157facbc38153d08cf8ab4. 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/PLA552301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe7a42c136087533347993dfe47ec80cd99da33e8de39743f0260a37f17370. 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/PL2B92400011.