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 0xbdc8c039841b6103a46f437da55dd479453af146b381f66e51370813aec8cf80. 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/aa399094-885d-46f4-9772-fbe665fd9436.json and https://artists.proofprofile.net/proofs/artist/aa399094-885d-46f4-9772-fbe665fd9436.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 0x7bef8fdd4606f7dc20ec9149e84b83834bb91bba5bc2f1cd5d80f2e06babe49a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:08Z), 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/GBLFP1646866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf042fe0ffc75704359b4cbec97c0d3c627c844b098616e169b56ec25889d2fe0. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QM7281936466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f08cdbb966d86c73476e8e71f8d8f0cf71011a8add32d6554e25cec99f96bf. 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/GBLFP2046544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0158fdb391c4a6ba70d1992f794c8e26959884980952be8bdab520b7dc1a626e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2041815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0158fdb391c4a6ba70d1992f794c8e26959884980952be8bdab520b7dc1a626e. 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/GBLFP2041815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1061a017acc56fe342ce02e1af0a63cdd709747d65e49ebf042264ea452a092. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX3Q92099146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1061a017acc56fe342ce02e1af0a63cdd709747d65e49ebf042264ea452a092. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92099146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75aaedd4e7020d7ced60d1aaedc966a557a9c87ec7651b69d9b6fc04c04f8f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:53:01Z), 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/UKXN22567680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75aaedd4e7020d7ced60d1aaedc966a557a9c87ec7651b69d9b6fc04c04f8f. 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/UKXN22567680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef77d78d9b76850e7f7a7504314ff01213dc0db4e3424971d9f6348fa0b0dea. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBLFP2512486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75aaedd4e7020d7ced60d1aaedc966a557a9c87ec7651b69d9b6fc04c04f8f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22567680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18df3c6bab0e5bf903fcdfccae4e2193f0270e6c4105d4ef86d8d88197a1d799. 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/GX3Q92550610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75aaedd4e7020d7ced60d1aaedc966a557a9c87ec7651b69d9b6fc04c04f8f. 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/UKXN22567680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52081547980dbad7bea6a10a5d08cada255e5200aadf163e907888a49ff0563d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:53:27Z), 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/GBLFP2556173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18df3c6bab0e5bf903fcdfccae4e2193f0270e6c4105d4ef86d8d88197a1d799. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX3Q92550610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75aaedd4e7020d7ced60d1aaedc966a557a9c87ec7651b69d9b6fc04c04f8f. 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/UKXN22567680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10051281d7886e6ad5464fd5519b4ad801aafd7bda61735c50774ee39f16336e. 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/GBLFP2562892.