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 0x72a498453d78e96e7d56e05b46279d58052613b7e17894d54da2a659f7450b96. 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/e74d8dd1-b7d4-4564-8487-78a539ee7fa5.json and https://artists.proofprofile.net/proofs/artist/e74d8dd1-b7d4-4564-8487-78a539ee7fa5.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 0x2933e863cae04f6d3ef9df555ba94e45561675fa4a72e85acbb1e9856ce830f1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX282262178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad115292955090773d38ba35b007c7532578146898109245f484435bdbb9f2f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:30Z), 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/FRX282262179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44790fccde18462982101f2cd638c2b218216c43a57298bae8b1385ba1ebbb03. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202234036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cdb08bf0e440c40e11153378f4a8b5c58d1e430010db27e1da0a7bbfe32a5. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRX282262180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478ebae1f1b817aa9e1ee1893af9dd7f9c5a97dd6350f628b6374a458f91c5c1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX282262181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2933e863cae04f6d3ef9df555ba94e45561675fa4a72e85acbb1e9856ce830f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282262178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad115292955090773d38ba35b007c7532578146898109245f484435bdbb9f2f. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FRX282262179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44790fccde18462982101f2cd638c2b218216c43a57298bae8b1385ba1ebbb03. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX202234036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cdb08bf0e440c40e11153378f4a8b5c58d1e430010db27e1da0a7bbfe32a5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:46Z), 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/FRX282262180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478ebae1f1b817aa9e1ee1893af9dd7f9c5a97dd6350f628b6374a458f91c5c1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T09:10:00Z), 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/FRX282262181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a22f69275e0fd5e069f3c296f712375974f5baea949673deb8ad45affec4f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX872290788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a22f69275e0fd5e069f3c296f712375974f5baea949673deb8ad45affec4f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:50Z), 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/FRX872290788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f77ba07c2cd608e0cb826aad1809ff2a4f1ca5424ab4e82394567c0b0311a83. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RUAGT2332919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfb2adf1b1efe9ae9cfbe8b68fe03e25372fb9c0a9c712272cd8a550d51a9f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2415322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bebfe0e26dd593a11611021951d377580fb6004c4fbdae1a6ae9c9f6ed5cdbd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1D2415323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf6025461d97e70d49c28baa5c649f29338cd7fedf36166fd1a124fbc6fe45b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA1D2415325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f761c2df714ed5633deab839d7707f1fc6520e5e105382fd0669fbde72dc1f6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2415328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5ac126bdcd540a6ee0f0ff10e914b6c7a38dc4ac418a49c82023ba5f6ae8b6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/RUA1D2415334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2dcca0422b2b7570b721e3037d34a2c88c058c0f5e8e69476a3730ff7365ec. 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/RUAGT2359242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bd78b0a7388f2e021737643b33ee38fc86ad84e36e0549c9c5dded2fd629cd. 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/RUA1D2325841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888a78dc600b113696f4b415ad78088e3b52c38c66ae24b03e4300352626e11e. 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/RUA1D2249689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26b782774ec6ffbcff395a4da18f3e24c05dbe3f4eed55ca3144daff3193bca. 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/RUAGV2407521.