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 0xb1d2cca73acbc0eae9405a78e7012b657623bd47e63ca90782c87c5b0a62e5ee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6ab0b8e-88df-4c63-9a66-608021f4791a.json and https://artists.proofprofile.net/proofs/artist/c6ab0b8e-88df-4c63-9a66-608021f4791a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música Romántica Instrumental de Guitarra
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 0x9f455b0407085ccf0acac0feccd5aac7cbf5a628319ae3727dc35732278a91f6. 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/ES03S1803286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe714c3a657665fe0095e499d410731ae4555b70cdcc81e94986280e0592c90ea. 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/ES03S1803287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a2b11739cc5e557f1a52ab64dd8b6f7bf6592acfc6a90a68f84231c3099301. 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/ES03S1803288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe69ada88502b24c6da4511eef7bcfc151bd905508c86d173be07f8273522e. 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/ES03S1803289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d747ce913e525c9dd8836d7cf8c565878f71e9a40695888c49b39882360daa. 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/ES03S1803290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ecf3465c3de5564a06c0e130a345335080b1d32902d7c12e9412eeabe32939. 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/ES03S1803291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6e63b2f46eab81eb9f1a14199f02eb15fa5ec3d03b76fd8269c301afec70f4. 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/ES03S1803292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc561d4fa332146d87ea427663d348b27826e7355aac40f28ff9f71ba252cb05. 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/ES03S1803293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeb49b6a74ac497950f5ea55f8e3126bed37f0b793ac70b2f93f17d685a1591. 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/ES03S1803294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54997cc529f23ddce271ae313ae790b58a462fb9778f4126c52f116b5a79742. 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/ES03S1803295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150fbb644619c6a8255ecff12ab57e56b8b49999f5f70d4d35b7c43476a49fc3. 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/ES03S1803296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3892b6157da97eaae7539d2e109e082cd6bdecfca684621c0f09582a1d50e4. 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/ES03S1803297.