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 0x12477e3b2db10818756748501697cf6e3db94587fdc9233e3abf8e7d38e5ee97. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c084bd45-1553-4a03-bb15-0e79fb4a0878.json and https://artists.proofprofile.net/proofs/artist/c084bd45-1553-4a03-bb15-0e79fb4a0878.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 0x131d29ddf00d26d74872554eb30c5bd8394fba9b4a268a1f783840c4a7d82247. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRIDO2111784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafbfcedb0805898a39fa150d4c8ceb67decbf1f48b5969c1e90ebb27a6c5003. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRIDO2111785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ee742d98b74867bdd4e23c5abd2b0965a3d11690794506add4d472d0dfcac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2111786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa05f59f0f967047f89ec0b5b5acef4773ae0b56c6d9add244aa83b83f49537. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRIDO2111780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ba0fab6064404adc99ebfab9479c7967232f03214a4a86e3d0385bd38b5a60. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2111787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6203617f569149c5539e496708c8541188448a54274dd1d80e03dcfac5589be7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2111788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238053f42d56e888ba2c9980331101f0d23e76f174c5291360be137d3649ba4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO2111782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb66efcd46a98bca4f97b68da8b4705e2c866934f354b49d493515a7b9f357. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO2111781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632c0f64eb6a76cd234437a7f6f9e99c9cc7d7deea79c0a08f375622f347ef1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRIDO2111789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5805ace2c7ad83b7983973216951546384609f88f15f999360bd7a698e3fa8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRIDO2111790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a9e1362ab68aa261bbfbb3525e3ec89ac21d1641dafb51d13dc1f06cc1d08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRIDO2111791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfeeec7c2e4987ed87749602f781caa80649397b3e8def1f1ba8000a5ff83f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRIDO2111792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce66518d932061d791615cce5c6b03755016bfaf303a8a2125c3c68b64951fc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO2111793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77629df457cf10d34df355b74cc1f78707ce64cb28ccc420663827e5c47bbac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRIDO2111794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb66efcd46a98bca4f97b68da8b4705e2c866934f354b49d493515a7b9f357. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2111781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0aebd4f072aa425ee12d2336ce20b2631761847a9646071317bd78dbfa76ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S1840939.