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 0x44438f8d87f762b6f02a3b8493c2107c73092fc02322aa6b02f21ee8d05c3cc7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9b1f252-62d0-4cc7-9aa0-16b46c8983cd.json and https://artists.proofprofile.net/proofs/artist/a9b1f252-62d0-4cc7-9aa0-16b46c8983cd.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 0xe8b7c40dd59192d8dc21cbf4e15ba4915b72ae57a861263783fe386ef5434e59. 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/INC622215247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aae49bf388e36446f51b5679b7d25f1410b893a050640f090d6b97bf3d13c12. 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/USA2P2430047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d82300b53653a7c2f052ea8b33d43fde27eeefbead63094a01abd09c9bdd049. 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/AUGOX2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6c0e7c052d78da2ce915aa87e5cf41a20b75fecf300a6b58eb08a61b49297d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGOX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddaabd5044a5a7202e94128634fce7128338ae57b2772d893b41c3c34a83b78. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUGOX2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7756d206529cdf14cfa0228f533e315a27c135c102f9e6690296504310ecd1cf. 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/INW262200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f3f0e18ae211d2df5d5a23c77f3ca0463fd8eacd8ba6b96214c5c2d9a5dca8. 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/FR59R2212353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6955cda4b0fa78a222d38eb5eb25405d5679052c77b65f80513af4b28443fa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUGOX2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4880942855877f65672ffe440e3c55a7c3f4f3d813feacb6a3558620c7d3877. 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/ING501802556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf117731106dcdf0d6992b3497673e8cd80e78945d5d6654b2e64d921bcc300c0. 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/ING501802432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc02cca625411d2d5e24a3c5b8fda3e72a8297b109961c778178cfe4d817ce8. 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/ING501802433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de251c8df4ba54300894d7c6bd47e421fa02e909ef9df18fe6a9c3bbf63f92f. 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/ING501802434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b43dcba67939677b1593295e90426c152b98192dfd232881379d464959bd7fd. 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/ING501802435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2e045fb6b8f444b5aab4d1b8e4d6650b7a9c4eade345c495bfa81168cd4be. 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/ING501802436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00fb8f8b2f9c679989c49587474274f4c8d1d9c0c7b91074f37cf20ba31756c. 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/ING501802437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09dc9dff6e8caf12bed99c1042cc4052f0c3e703a0aa94bede9bcb1e6af35d4. 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/ING501802438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8b1ce9704092e81a3e887956101506f0e6550ea4e57f098204a05bd50f57c. 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/ING501802439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e474f81c7ca92959f2074ab05135d8a2025f4630af80517910c556264e5c37. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ING501802440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96dc8b96fbdae2b8e4a12c14ebfe9163cf71097badb3b3ca5512de560bbdef5. 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/ING501802441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09a34690141fdf2bb836b2094f22aeb0677a6c244c15d6b044edf89c533b72. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ING501802442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22b3807c2b178a89410c2e7dab7b42009b0f367a48d963e1b472a72496ad15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ING501802443.