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 0x1cb6f57b50af9fb03d7d21a8a0de48ed36ebf90bb704cbbc6f2cb65876ac8555. 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/7417d8e2-7d0a-4ab7-b01a-bf7ddf49088a.json and https://artists.proofprofile.net/proofs/artist/7417d8e2-7d0a-4ab7-b01a-bf7ddf49088a.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 0xa36c048851cc84b933b8087195ae5cf5eac8d5958b3cd7ed72cec8d118b90e6d. 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/MXF170811504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be41009f245b087cff03389ed0085f2c485d144aa3259e7f5869df184fcdcc1. 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/USCHR1312849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbe4fd44c409c9fae15d472727d01c8e9eff4746ad5adbdcd2d8dc72140724. 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/USCHR1312951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc094e72084ae6c8271bc81ae89cf1356af7c577d6f5d848bf2a451ebb747637b. 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/ARF109901318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cefda62ca64c91d3b89ee7aa883f816afdd0dd863498b89a8cf8df23d363f6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARF109900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f54a89fe4af5a17ab54171416605d10d033eb2bdf4e44810f2b5c990835ea05. 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/ARF109902132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98628e7163ceac4f44a8f32a6c25c2b6ef37ae5c92dd8961b296070e35f81d. 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/ARF109902133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f90e5fb0c517d9f1ee190dd793367299b46ada9d0ddb829cfeecefbc9403f. 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/ARF109901681.
Argentinisima Vol.10 - Exitos De Todos Los Tiempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff952c69616618887db12f6e6601e1c2e58a745ebc388e7da28cf918ff9737. 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/QM6P41423431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c5fe7e2b7cd1f7721478edf77ea7152a3904cfdb6ee09c0e43536c6d5685c3. 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/QM6P41423434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d529a8ba2fb908e6f87764249ddcd7103d66379fd7d57fea48924d5602cdab. 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/QM6P41423440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52da61cf767943b95d17ce1daf572cc6c70bc0d71fd889b26e1438a75990629e. 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/QM6P41423442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bfb6de6410d657a122483654247a14c7f2d5bfba4cc31de3ba57b47fb0dce5. 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/ARF107900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe86d7629873d8bf108a397f8ac6bf5de81d477dcc1bb35bbd9e38221988baf. 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/ARF109900622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74090d55f28562c3efb343f53dd096f21e83afb979426090a37dcbc480891be1. 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/ARF109900602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4afefa79f6c866e5d7cae83b6c22b42a9539b89ac61f566e60f6db2d23e964a. 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/ARF107200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f9ae785384494f573ae5714bc811e1cdaf5d7e5c47ef45fec1dc0cb2b6552. 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/ARF109900599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaf6bd567abb28ed3040098a986b10023c8e8912fef0fcc7b5299c03b5a4a5c. 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/ARF107100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2339d73df478bcac1a919995f062fad57cca50e57dc3224277638ae48196fa9. 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/ARF109900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce291503e4caeea79a0aae45f5b9b970b00b7fe4e49fd222c3480622be1219b. 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/ARFSB0700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8544e6b04338b7e4d24d124a0a52acc49b593faeb918fb941deb94641d6925c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARFSB0700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea38d75b8ccc9fa209db6f94d20a428962c94c187c024c8d602a4a41fca7064. 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/ARF109900595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f9ae785384494f573ae5714bc811e1cdaf5d7e5c47ef45fec1dc0cb2b6552. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF109900599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74090d55f28562c3efb343f53dd096f21e83afb979426090a37dcbc480891be1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF109900602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d309c28bf1cfef5e9f1b1084e0f54de82552d856ebc6341aa79941e647205e8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF109900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2339d73df478bcac1a919995f062fad57cca50e57dc3224277638ae48196fa9. 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/ARF109900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe86d7629873d8bf108a397f8ac6bf5de81d477dcc1bb35bbd9e38221988baf. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ARF109900622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26db7249f8ac72336f6a986696f9862087b88695067339199119030243d95ce3. 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/ARF109900609.