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 0x3b0b9690f5e320e7e04aeebf34ea2c7b76fc549f6bc09204c7433ede33ad0d39. 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/a66983e5-7fe2-48eb-be9b-8b2868149122.json and https://artists.proofprofile.net/proofs/artist/a66983e5-7fe2-48eb-be9b-8b2868149122.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 0xd1d87b55b843f4dbd7fe7b499e7f0b6d36a139c4e890766610aaaa2d2e18bf45. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAR41628757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6466e439543c82a8541efe3dc91a2b7f0cfd323cc2514c44c4b91375fbcba157. 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/DEAR41628758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e29f8d77957b58af2bff927f9477c3c0c4e7af1ee0e9b230bc4da92ea403c0. 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/DEAR41628759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155947e3b5b5c9e565984a6e33da63e31494954ceb23d4d46376ea10b0c794f2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEAR41628760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced168f9419c6e526318eac950bc392a73936e3b769a04a9e130a63f0417e1a4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEAR41741241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44f07eaeceeee3fb3ff66e7c47248bb161607507b0634fb9f484a709c9196e. 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/DEAR41781048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c606c9c911ee629e8baaa5dc4f5f8363f7548c6f2cefc128a0a39584ef57da. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEAR41876169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a19500c2dd1ca35f2d5b72b0ba7240401e59fbc13eaad974ffd459b959a68bf. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:00Z), 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/DEAR41893657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84546d84bfd2bfa67f59ce9c6d1e100ecd7c206e3a91b16bea9e144b276de2e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:56:51Z), 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/DEAR41967341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96031b6a90378b84b2b6985ad2d9b37ec1147b8f7116dfb5918fdbb144bfb8e. 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/DEAR42059974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b93a4e676597d8dd93836ef5f73f35acf72c1d58533aa829dbe65d9bc722512. 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/DEAR42166882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9d7c982a56ee1e4677d179575e686064dd94a977f3adc183275bd8a05d9cc8. 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/QZTVM2339395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71056187336f52aa2e3374f35ae82e7d0f2b5a43bffcaa81ac733af2ba325294. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTVM2339398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6e14253fc4acf6b0f2ef81fef2cf34e2bc51c4e937c7d99263b5d629f45f6. 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/QZTVM2339396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116204ef97dec5b5b4cdfae7585d8aed916c0d8b9a842539c0d1e7908ba372d. 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/QZNJZ2407182.