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 0xe6c17363582b32caeb1c80f3e04a7dc07270e8c3fcddf052751bc1be3de8c2c2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d24ab45d-076f-4840-9b40-543c7a44f0de.json and https://artists.proofprofile.net/proofs/artist/d24ab45d-076f-4840-9b40-543c7a44f0de.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 0x65313e47ed86ba75015c61ff64f03ebebc01c6e6ad7d6ee9c8703d8dd6888dde. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2353688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b6eccc6236aae778023c94428df9c3c5c62fefe91507af33efb5b378de1da4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUBEC2353689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5129c381713f5b8a0ffaadd177c4ab5a81d4b4bd02037878697b56962404973d. 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/AUBEC2353690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841792537b992155f7537a3de6526e18386ee4994b9e39b5a3720205d47c7060. 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/AUBEC2353691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238de8e7f278057014e169fee3586e00fd66059128a587e54276dddda731e6e0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2318268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a854387ce7aa9577fbe239920e8fc0c04a3e715ffcb6fe55b44bc44254397c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUBEC2351075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7010d7b95d2795e8eb67f67aac6f8e94bfaee497db97c1f5cca6d0f76e03294. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GB8KE2318270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184b1b51ca5e48723b9e039bb45cc6049b9ef9e50ffe42c98b1cd2bee36a4608. 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/GB8KE2318271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb08f6631b1e5298a72d3193e4c5a18d64fa0a47c261b2f868c321c7c456e6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/AUBEC2354045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9127f9bd89a570382ff85879a2943dcc16715235cb06d7694b2ba5c545a65d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUBEC2354046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dc428bfe0b2daf8a2c2ef368aad9540052212266c1ffa568597e6d6811d76a. 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/AUBEC2354047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c53939a03774b16184dd5a114be24a3f5c7ea56525f8dd159b4694ee0d270e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUBEC2407689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45c7f52683e9e8cc3df93971c7ae026627b0dcd0828e53d3bd9e8fed5787d6c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUBEC2407690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cef866f7a35db3543953a1b152ef585d903fec5558adf9b42db8c65246a7eec. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/AUBEC2420633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fc760f3847dc2e46f37c02b82467951a10e783fd5ec318aa48a31900679dee. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUBEC2420632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cba51afa36df49c9ec6d312e6ddfd0de55dc32caf02053222f895fce0d0752. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:34:59Z), 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/AUBEC2420963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9910a85142b24975ea30ea739889c6252aed2432a7d0dc0d965b83e1acd069ef. 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/AUBEC2420964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda4a83781cd45521c4ba0e10225764be3f0cd9bb6cbccdf0b5d24f200de595. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUBEC2420965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05052072aceb69f85d26c72ae5730407c5ddf5cf85e18cd14a28048e8132230e. 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/AUBEC2421548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98173148687dffeaff812a738d21589940747128648cc24cebb832263fef98c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AUBEC2421549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1988a5db71882243590756b44c82e6b192edec6b63a491048fcaef465f7eb491. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/AUBEC2422649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ae4ca1c4a3639c25bf012789dfe32972bdb6117302d11354869333a13a40d5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUBEC2422648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2582bbd13038e02d8e4f64b74c5e3c8c614a7a92e07be635d7f77149dc9aed42. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/AUBEC2422215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faffcf82892ff787b16991e48943d20237a42560fcdcc1f6b80d996d1317924. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUBEC2422217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8fc4f73e0741cfc21a7028e2c8437ce33651240bafa246693593e6263c0da5. 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/AUBEC2422214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8218edf0264c6fa76c3730f859987283ba890372048e689773684435d8904e. 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/AUBEC2422216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f25cbc17a49dbe4e928885ddab30112757ac23b3a07e1d85c4369d434ebbdc. 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/AUBEC2424610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930aacb86037254ca5ce3c005a9221e35159860643f7002f95f0b84c792fce76. 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/AUBEC2424609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33d2395fb5a1f5251841a5f2bd7c6778b146b0b9cedcbfb193ed4a8688832d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/AUBEC2424690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659b243f4d846227894b0a7ea435f95d309622f946d70db52bdeab7e730f94fb. 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/AUBEC2424689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6867ae123af7c3c97e5e8838bfc5ea18c9b04354facf457cdfafbc2df97853. 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/AUBEC2424691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec92a644c656d3c3758400cea74161d8b5bbe71cd344702cb9a13c7120d726. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:45Z), 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/AUBEC2424688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d2576e3348e6aed3c5f16bc6949598c7b01fb4c75f111fd3168e46967b7047. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUBEC2426806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b14744bb2b1030cbe0cbc00edb3d9bf2e3ab047b2470822fa99ea15bc3d8188. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/AUBEC2426809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5dfe32890b78bad051f6e44a24739e330a9d88fb3cdf345f6391261266efc8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUBEC2426807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb933ed2d6d6ff35b5025c440e03c5203f2bb328df4a1873b47538f4b7ef02ad8. 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/AUBEC2426810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f52337c9e17a205085ff985d083cc56ddcf45a78bb2b8a655b26f016b2e561. 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/AUBEC2426808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44dea42461b47a0e9be57d8a0c2c80463c47ec9729c922a9543d88fa164138f. 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/AUBEC2446079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d89f73ae01c837cdaf7e231c49da0ecb751b2fb36a17e3fce3488fb8c541fb. 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/AUBEC2446078.