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 0xa1cdebbfd8cf981d35f6c9ec702da445cab236323fea776a1d702d830e332962. 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/0876747b-3de3-42a0-8901-8c57eca64c85.json and https://artists.proofprofile.net/proofs/artist/0876747b-3de3-42a0-8901-8c57eca64c85.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 0x59c10ac2fd56082a6d9e5f0b8dd3992ee2eff7ef47fb077047e8f008a48b896e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/RUA1H2102323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4590749553a2d45c924f906df4fba8cfc36973b25c3c2f1870e95bcd472d547. 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/AEA0Q2104906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2038752a9bdc82f5aead953bd06b39c128de1a9fc6048c1a4b63b055c41edb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:27Z), 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/AEA0D2123456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d423460a050a2de6c250076d28e360a704e805348ae84474dfa2006c250da. 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/RUA1H1825754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9612e69d73c356e3915450ebfce0d6414a224ad7608c9bd4ec546256dd06612b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/RUA1H1825755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbdfa50b70d3e2585a6ec67a34a66e9cf8a08736843a9948519c88a38dd0e9b. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/RUA1H1825756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1265699dca3fc0c2bd6708dfebc6f2eeda719f4f839555a6c8e2bafd467f6d02. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUA1H1825757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb6a97b62bf2242d977d00f1c0b62847e527291bce55268246c88fdba07ee17. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RUA1H1825758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ea9ed52afdc9e64ff059cfa8edafa92cdcaea91b215c8c99e8e491b3912502. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA1H1825761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad73ca494c6b216639d9f8a81abdb4ebdddd5dc4041da49940b07d8e244eee2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1H1825762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb09348204d4ae0111f7608cc12bc7601afb828599c53a4672f69bfc1825be80. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1H1825763.