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 0xa22b2707838f3d480abba98a3424dce4b3686e470a5932f56d751c1e42761b6d. 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/593bebc6-8c44-4975-b8ae-95fff9d5ebf7.json and https://artists.proofprofile.net/proofs/artist/593bebc6-8c44-4975-b8ae-95fff9d5ebf7.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 0xfd58911fd18c5a3996093cd711e838483e507577e7d84d282989cbf2fc60b636. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DGA052004162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e3662e03d5570b7bd620fd45abfd22c46d56afa7187de2c5b230cc3e87cd30. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA052004174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e144f34b1e4787b6df4bf70cd3cca6a4534d412f3b0d5ed191a860b9d063bc7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X41986819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb524e125dd832c88fe0b3e2ff5071a65779a47a34d6ad78945e94a85fdf185af. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX452077496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a1ffec7208792ea2fce6f72a1383dc74003a67aaea21b214bd37c13aa088a. 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/FRX452077500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d78eb5081e4aad49848e8aefc658201281584e4b9dc34662d3f1ea52b316bd. 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/FRX452077502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cce301b94f1da96f4694954f7d8199f5895443ad88c3da34526a826a4ccc12. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX452077503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826ad6da8b332661748a021554483e2988caf3c38956959b85f3ad1d29cae62a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR26V2061380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79893a3aa410e475569b4462d656f5b711e24b94fb1c57a5ddd0e61e94b758b4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V2061381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd848b5919851525689663e3090d66bd8a9582499e69c7aaedf479e37ea4009c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR26V2061382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eb4a5171808f1e95f6fd7da116dcdaaa04fb4b8e43163f465415a76939f4a2. 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/FRX452119923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66568a9dfe669457c0c29e505cbdefd4712e28d9042bd1803d392b91bb721b8. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FRX452119928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c12c05a0bbc79b04e15e15ef82ced09bd662a5b57a74d9559cbcc55c0ce32a0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR59R2310259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3a4b23cdcc8a9d5975e2389f77786cf727a7081a01b786544926550a015d2b. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USDY42399822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d92b37fc6645f50f5bd20bd8c630f658a6dde6d3aef3310de7d6131cfccce0. 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/DGA062412432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a12f5260cc318300a086b9b2b4beb5e989801e2b23787335130a839f6c657d. 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/DGA062412434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc052fecdf10eddcf6f6e27294ba1c49c4266bf8b69a202d8edcc47eb35385. 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/DGA062412436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40a34a98209bd6e19ad7ce23ba57b2f59d91f9e9f91eebb19a5b320416cd23e. 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/DGA062412439.