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 0x3ed6fda7ae05bb4408e4307872c9284645a5cab5535ec418ec1b5efa02d79620. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/389f1a0b-5650-450f-b9df-fc7913de4466.json and https://artists.proofprofile.net/proofs/artist/389f1a0b-5650-450f-b9df-fc7913de4466.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 0xc461a42aefccc411544382b9216ec91251556baa8fba4b454e32e3b27f8be90b. 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/QZRP52415078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ab60e0b6e8093c344d13b91cdf3af9cd7501c0ecf1d4b2b7dc58818cd1dddc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:51Z), 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/QZRP52415079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6238913f2dfefa215ceff821ed5b4e0b49e30651eb276c294791f1e4021f9d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZRP52415080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d2cc86ace2696652a756ecdc27fe5ac53e44b0786eb890d332f7abb90e1443. 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/QZRP52415081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce563ef461665b5465ce5996cf0d56b5a0543c7485f93b7bd2f64ebdbb358901. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZRP52415082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9979958d227d9e4b2c2d058275f7d7ec19df0017b6fd372c25ec06d648dabffa. 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/QZRP52415083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984f5866e5a673c0fc5739c5ea11162f66c147032c96d82da99c5ae5c3f6a12f. 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/QZRP52415084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d91cc5d4bbfb0b221200e0540185bfe663f968fddc13ec419db3298dc98cf7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:33Z), 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/QZRP52415086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf120ac868ee6354ac2b516ee6170ecd4e2b351d8620c5c990ce07090d437c03f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP52415088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f83af65636e3b98e2894296ac960b909016bf0ff81e277883a660e63765c3ab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZRP52415089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406fe52b79c62b7c437fb2ceee9bae9a9f69e57d74e0e5e0b704bc8dc7ea0a4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:23Z), 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/QZNWT2568189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6add3c5bf8618f2bec4eb599ee5bc469cf62463bb045a6c320b0251b6042ff52. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:03Z), 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/QZNWT2568190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358da01714b590b348e8d61c289a2e0d5693d86703aa9c040c7bd5b5ea0cbdc. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:00Z), 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/QZNWT2568191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a6f7353a8c84e5498f3b08cc36d603fca8aef9a53cf0bba401e294ae81cb3. 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/QZNWT2568192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5780a1bc0dd2746eca4989f7df32c05e0cbcba3a7f95b254fa0c53721e98b9f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:31Z), 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/QZNWT2568193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0054db72aa4b22f5e1cf002c53743023cf290dd4dc215003733044783319ae. 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/QZNWT2568194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a9b669760a74941a99b92116b5616f13949aa416c6b3f64dc447142a430a2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWT2568195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3615e357180b47568d5c89fe3c17e393bbd95537f33a5af01e294d014cc64d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:33Z), 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/QZNWT2568196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4f42ceb7212533ae7f793108f8895d22ca5c207abcbbc754b9150a27cc957. 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/QZNWT2568197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd981919fe62c82d49834941442621ab362c00cf5e8faeed6c78477bb6013a6ce. 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/QZNWT2568198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c0fed4f7e7ce6bb312605fbe76b9a3d1da83f6f426116ded0963f4f8ba0279. 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/QZNWT2568199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e8054e6c7501c0a5ba524c8ab5292935341eb0ae4fdc6a214f0761d1b1c715. 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/QZNWT2568200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76bfd4b8ea89fc8abe7ae897fb003996102d5a31a6dd30850d681647d2dd60. 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/QZNWT2568201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9c7f4ed46dab15316983188943e4cc05c96a717e08875e4a6b9ddc6cf05041. 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/QZNWT2568202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beb58537ee9c4b0da4ea6c8d9c2053fc0ff012ab802f2028a0faf462be159c5. 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/QZNWT2568203.