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 0xd7952c0ce0e80fbcbf5863ea9a61accc000a1f622a429570869ff2deefb0ff12. 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/e3834e13-e1e9-4c92-a3aa-abc462cd72df.json and https://artists.proofprofile.net/proofs/artist/e3834e13-e1e9-4c92-a3aa-abc462cd72df.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 0x50971b4625c7879c103cab3f7b09130eab860d92c4df0409a5b17cebe8f8cfcb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWV2471642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ebcdead24fcbb1833763efac5e4725ca6289ba7f865d802d0f083390244b4a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:25Z), 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/QZNWV2471645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86658e83d2708cba145fc10a1f7743360cbe65f1cb9a421d69fc4aee505582c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWV2471647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeedd628764d5880119fe118dc085122812d1980ef4f13456814759e3b4f8be1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWV2471649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5c23cb32162f16d2fec4f235c006748b219358a56bc1a3a518bf634c074ef8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:08Z), 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/QZNWV2471650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb451b507c5360681f5d913dfdc283757eef9670243fa1e4251ec7caee4c051cf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWV2471651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297c23314036e3f36a430082d4b76c9efa6029d4991240d053ede6daef262a9. 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/QZNWV2471652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd3e0187e160f95a61aa91397f7dedd5afb9df0ae946ea346c7407ebfc758fe. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWV2471653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a6b17f296f87b6a76540f92748e47f4653949336b21ec3f7244b6e7527adfa. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZNWV2471654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a969dc8e54c340808dd9fcf4af0f52507e43e6af3f6fdabbdac24418d8e9f0. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNWV2471655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd30f56023a5a86fdaddded5caa1aefc7b746f1ce18873258b71aa5cc0d456a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWV2471656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b073b274e9e26e6ac207a6ae48e22bf505b86aab3f5ff37bb75a9f89641d9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZZ7U2493027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dabbd611f778ec1a30a2000c3844126648c2ff2c09f936b0561c628f18dd33. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZZ7U2493028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d370b36f135cfa01f952021797d9e3cf1311fe94572450c1c387fdcc820dfb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZZ7U2493030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f89f5f8a71ceb8b1b228c619ff481a7c5d9aefbce3f92e1249ccb8c46d8616. 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/QZHNC2579282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7252688ff750d7d1fa30792b3f7d070afb5b2352d169d537f8c4db1ad2470f02. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHNC2579284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3138acd534241ea57abfa18d5d9eaeefd83570842313c8d596ac10aadc6e44. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHNC2579285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6e56bc01243e7fcb1ee027e5b75dba9bd3740485da83aa638ffe407c96728. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHNC2579287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3b23895f11be6a59ccdc9f687ed44d64886efa300daba65911fe345670c1e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:14Z), 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/QZHNC2579288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90802d4f8af6a1cc252b36c426685cc52d8c8b075d515f6121d92dc4859f4d28. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNC2579289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879d6e8ff8e3e8b996035af3376d5b36874ce9e43654dca81ff23c604875b3ba. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHNC2579290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72e9d3a1572113fe536d36f13eb83d16596e7d4c9a2f6872b867d5ee03a40d9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHNC2579292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679610e7bb0f5f3e7b3dc5f3128e92e24cdc4419c6bea99483ff87d1f5af9b58. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:15Z), 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/QZHNC2579293.