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 0xd11b5dc40c82409e2b29e7e4338aae08f6a6cb10ebe7d430573a5e4b3cbcd56c. 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/9eca579c-2887-434e-b2d5-802c92df8e98.json and https://artists.proofprofile.net/proofs/artist/9eca579c-2887-434e-b2d5-802c92df8e98.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 0x18ae251842ed5c24d4c3e53549f7dfc347365d91e62b6525d26b6107b6815e04. 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/ZZOPM2223700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae36e600282c76112c613aa8234fe7f11a4ef695717b85b356d32afc285256. 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/ES71G2019658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6e67d6bd51c5f0dfdf2f0ec5d7c3c67b72d902f6ab0e73df0bacabe3d6fbb2. 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/UYB282381046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c7dc589f10c9f1f39436417c972ecf74161ab7f6337956b7f451ef2e6f94a1. 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/ZZOPM2224957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640d927b8428e316c4c3b555fc38d468963fd07f59fbc7e330af9d4660ef05c1. 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/ARACN2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6662139666dcdb27b579f54de4788e384b151e6382cd13d69f0e5b492c47b17. 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/BK4DA2315619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f420037604b7fd1a12476fef8c1ee9f8f967d482a81859c3f9906620133f0e9. 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/ES71G2305549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447bc58a95a794709c0b124716fb4c68207a7e55218644443446e81224709b2b. 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/UYB282250003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ae36e600282c76112c613aa8234fe7f11a4ef695717b85b356d32afc285256. 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/ES71G2019658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb14f0e6daf3dfd7db7d937e5d24b77be89693a5072a98fbdd75a92c85199d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMF2033243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf027bb0673fcf061ccd2f50c0e05d18d7496cda18ae70889bcfb09f1d7e33d. 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/ES5022300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac38b95171aa5dff94966236b1c02103ce304deae6833a574876e55f6a9743f. 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/QMFME2295678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6010043335a2f97ba68347075e9af36b47394a7696ba00b412df3048ff827168. 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/QMFMF2100788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54ab06a09e072b763b5d7dd51d5de2caf2bd3f081cc85ca9b434658c73b8483. 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/CLA472300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ae251842ed5c24d4c3e53549f7dfc347365d91e62b6525d26b6107b6815e04. 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/ZZOPM2223700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c559a7909978bf4613e16a23a966c100b594124e9cb5b678169bc07591438a7. 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/ZZOPM2225879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c7dc589f10c9f1f39436417c972ecf74161ab7f6337956b7f451ef2e6f94a1. 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/ZZOPM2224957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b72c195752b227fffbe27bf63e4d0aa1c26927d3ea7f402c48fe968b9ec97a. 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/ZZOPM2225880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0b925601d0af5269e2b424a1851fc129db78149b344509c62d61f1e5e36f57. 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/ZZOPM2225881.