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 0x72bb6301fd176b7cd4d568a13316c9b8738f6e280c09784be67f97f3ad845f9b. 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/69822e1e-1cb0-4d79-97d0-ab94c5735bb7.json and https://artists.proofprofile.net/proofs/artist/69822e1e-1cb0-4d79-97d0-ab94c5735bb7.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 0x34b11b1ec470dca6d61b1e791004eba17d48945d19a683644ef61f4bbcb73847. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBMA22099416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b11b1ec470dca6d61b1e791004eba17d48945d19a683644ef61f4bbcb73847. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GBMA22099416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b11b1ec470dca6d61b1e791004eba17d48945d19a683644ef61f4bbcb73847. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBMA22099416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e1eb7b1a2e0f6a5337c9cc507f1aa5c8f583342c8a7efd8450c7927c19b231. 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/GBLFP2045765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e1eb7b1a2e0f6a5337c9cc507f1aa5c8f583342c8a7efd8450c7927c19b231. 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/GBLFP2045765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadaee9fe55163f0b32e88299bff13c9fca652f625f4ba683e0d3bc90161cd95. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/GX3Q92091874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c0e99796efd5d1cd220ee2948e35a8fed8285d38c0b3ff9b03e5e1a4b7cd4. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/GX3Q92094224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420454d6037c13a6e57cb85d7f2b1b1d2e7cf5f4cbe949d4d5e0b4e17581a708. 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/GX3Q92094225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f3b19ea8ae3be7e1e5adc0b4c976d313ed9809f908e5ba71c86b3b45d97f6. 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/GX3Q92094226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5c0ce6c3aa70d4904a267693f44a0974b1923bfcd9cfd08b40a3f638acd717. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:21Z), 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/GX3Q92094386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bd630f2540a5f66b74c0d493cb983eda2f149cd6096d2c2591eb189d888c6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:15Z), 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/GX3Q92090535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420454d6037c13a6e57cb85d7f2b1b1d2e7cf5f4cbe949d4d5e0b4e17581a708. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:46:10Z), 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/GX3Q92094225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f3b19ea8ae3be7e1e5adc0b4c976d313ed9809f908e5ba71c86b3b45d97f6. 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/GX3Q92094226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5c0ce6c3aa70d4904a267693f44a0974b1923bfcd9cfd08b40a3f638acd717. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX3Q92094386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bd630f2540a5f66b74c0d493cb983eda2f149cd6096d2c2591eb189d888c6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:19:02Z), 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/GX3Q92090535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f3b19ea8ae3be7e1e5adc0b4c976d313ed9809f908e5ba71c86b3b45d97f6. 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/GX3Q92094226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2613e4af2cab923837be7af758c5d45d25d6761626145aba8281313dce51fa7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92099656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa973517aecc2ec07a9541f73ba4152d61c06adbe80da94eff2e257536d231. 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/UKXN22349655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa973517aecc2ec07a9541f73ba4152d61c06adbe80da94eff2e257536d231. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKXN22349655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24740af06df9962ab34515b7396756fe9ad9e4cc4d5aa42bd7819247fb78e82. 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/QZW9L2485739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbfa89f4a40c7fa5706d69e93d8ccfd88c07c132ad970c1c590c085d6e3ec38. 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/QZW9L2485760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d4b5baaad78336bd5ef00a293acc6c199e13a12f978e999fb6f1158c98d0f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:05Z), 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/QZMZ92551616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d4b5baaad78336bd5ef00a293acc6c199e13a12f978e999fb6f1158c98d0f. 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/QZMZ92551616.