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 0x21a14dda5fe939c54450d500ba3572058bb859c78ec2c20cd2bdcc9477354821. 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/f7e3112b-6237-4c96-b375-b0080215629a.json and https://artists.proofprofile.net/proofs/artist/f7e3112b-6237-4c96-b375-b0080215629a.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 0x5a3f2090e832d78304ec4025a3995eab7c6d69b647c29ff40c03dc9ef8403d53. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFYX2362459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90a7ff65cbf458eb0d5c6217c368c4463842438d2bd06cb5c174639a73f9d92. 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/QZK6F2344928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90a7ff65cbf458eb0d5c6217c368c4463842438d2bd06cb5c174639a73f9d92. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6F2344928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd5088f5650f35280b7df141f3182a1a4768a0cb3f2f5baa30c237c3c600dce. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42597535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad535d185a13fd5a8f5fa1111f084fe4b6d17a37ffd1e10546a092b097e6995. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:02Z), 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/QZFZ32458811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1699ce4a1ae7bb43210df70d06dfd5d408d399c6e035b3c282cbb49f73c3baa. 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/QZDA52450841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a058dd928092306e4bbe520c0cf4dded654cd511574adc91ba1ceddc5af66b6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA52461274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0dfc7340fbee2b6b5d10f6c9301e6d567c8b56098fec2a388c5319caea2bac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBD2431906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eee72ede78a3c0b67fb9b0216a369c6094d39359b29b823bbdc15a5b492e92. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZDA42500945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc43a2e987f993a47dd84b1c5474c8b285b262fe2ccde29856d839e1be2df2e. 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/QZTB42393996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfc72e8f9ae1d12392661d475edb5c41b2431f900a310ca1260e441530498a2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:07Z), 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/QZTB42393995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80af62da9cbf9f86df156ef6a95388fff9dfa5ce05f4d22592ce572b5db9a1a2. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GX8KD2583955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bb1ba801d213ac74f2540a48d1ff899f461c447859d39bb082bea455e22598. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:23Z), 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/QZMWW2587492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f59ed2a3890c09520f5c8284cb265781f4eeef2e0fd9d5d99e6f795069d06. 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/QZNB82550818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749fba7b15c037327b2bdcedc289684c51dd02e3253e2bb296ac04f613dcb7e8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:21Z), 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/QZNMU2574382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d4923cfd0ebea44bbb24552ab9489b461e4dff61193c0b631efb9f3548891. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUGBT2551177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910ef845fa49d4471e03f3c8a77de8323323b1690c2beea19c58a3767e58984. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNMX2532084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20a5b4dc7e75988fce07e436e67b0d138d88d211d6184a8947a08d21bb3f783. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:30Z), 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/AUGBT2563251.