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 0xf00e00b210957001affe6122b4c648966910cd11a0047bb3e8711810cfd8a93e. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/566d40cf-f431-4c96-818b-14aaa9d81d2b.json and https://artists.proofprofile.net/proofs/artist/566d40cf-f431-4c96-818b-14aaa9d81d2b.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 0x613dad25be3698d1e2e7462da326ed701bcabb4f207d7cffb7870b8ce9859731. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMDA62447011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50d5163ae8c75827bc433f5b6d5ebc65342df55e06972a36a19f12da8403a8. 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/QMDA62447012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ae7349bb4bebce82c3655b8ee812e84e6cdf0e97842871a582ad886ba3b83a. 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/QMDA62447013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759ec1dcca61e5313b7a0eb3177ce410eec29f09a031271090036cc7e21d8b70. 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/QMDA62447014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8149063e1a3066ec63182c941ae4be6cd532cbfea725941d3fdaa01cf1b9c4e. 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/QMDA62447016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3c77cb35b4d954e9ffdbeb9d9257529630bc594fcb3ceae215e2245805787. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA62447017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc9917984ce0b9652b2a934ffa662fab0ba611e495348bd95b5e2c4c0665e8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QMDA62447018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0b1772ca4d153e4af03ac8495ba5a887cf4df5b30f91de5ccd41d072de9d09. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA62447019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937360beb39285e481cfd54dacc77c9ea81615c63cab9cf956daea54338ad834. 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/QMFME2249830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5048d23ff4a43afadb842bbd29c6b2f671cbc37aa2f6429982c7b21ae91907f8. 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/QMFME2249832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb882432281a89fb63d789d532d750d33750d85be6fa04881d8fb309db28cc1. 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/QMDA62128852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd4467891453584b494751e5f673d561501b5c6e8728b82879e2d7519e7cd16. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMDA62128853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c125ae6da8866bf35cf22f72a8d193d2b4265c33ac9819d0607e23a959ac9d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62128854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9f8a9e2bf42cd6f2c1278d1b9815f1608b7ed30bc85d9738ee0d6f23c2661. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62128857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8149063e1a3066ec63182c941ae4be6cd532cbfea725941d3fdaa01cf1b9c4e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMDA62447016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0b1772ca4d153e4af03ac8495ba5a887cf4df5b30f91de5ccd41d072de9d09. 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/QMDA62447019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50d5163ae8c75827bc433f5b6d5ebc65342df55e06972a36a19f12da8403a8. 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/QMDA62447012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed4a3ab5f8fac1688268a1457b4e5a64740f74773de6fc32d52a4a80adc1de5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ2425371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ca1835cb58af5a4ee658148c14ee2a474c6b4acdfac21764044128a8c4671. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2020403.