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 0xd7f1719a14b9c5b32dc154bdd1cc162939a188e0314c354b21fa5edd585a036c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0433cdc-ddb7-451c-a7be-d90083a1f2b8.json and https://artists.proofprofile.net/proofs/artist/d0433cdc-ddb7-451c-a7be-d90083a1f2b8.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 0x59a88169a62b700045a4d87cdcb88cddecbd9433c7f1385906b48fedd06ee99f. 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/USCGH1698778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8aeb195f787cf8aa6db2b67e6a556aaa2dc022224bf1ef683f5174d991360. 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/USCGH1698779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237e02ecabc34544ddc53ac929d2634ce3fc1edac6919c2ec816a952a98b8040. 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/USCGH1698780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d837f86806ea8cfc10a82d469cdcd0036901d5a7c03d8b824167c65a8a8b2d. 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/USCGH1698781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf224686d797664bba1caf46410b6befe49d4743cd7aeaece521e7da340df7b. 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/USCGH1698782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0437b9b9470c4918b3b92f16950af0370fc1c16b7c723d069b30f791937190c5. 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/USCGH1698783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b63fb3052bf2491160db8e64cd05d6e5f97d5b5f191b9c5ba99ec73038a91f. 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/USCGH1698784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836310337dd9350af3183933f6da5a9d7dd9b530fb99c8b19690abaa91c2587e. 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/USCGH1698785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd387fddee261c30eacea2d3e184934f9eac0d106b3a9e60eb01173846879a. 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/USCGH1698786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ddba95172a475d8fb6fe934f9b2493fff750abb4306f3814206d143b253c75. 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/USCGH1698787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd535f56b7e8ab36185c388019a241745829b84cc92d8bafc7dfb18c741341b84. 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/USHM90547581.
Scary Bitches: Lesbian Vampyres from Outer Space
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9145bedab9d4d483596b349214af684c98620b10f32c0bffb67a1ea1152da7. 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/USHM90547583.
Razor Blade Kisses: Lure of the Temptress
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd72dac2b072aabebe9b03d4e0c6ab4ed6b7690ea1b0718070ffd129cbbb9b5f. 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/USHM90547584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511cea517e78e94fd0afc2b01708d15e76f3b3e7f38353a27f8d6fac7d88e48c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM90547586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074622c5ea3a12f96f32dfeec5a5ffd74f4505bae6fd849ec092ea80e85e1599. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM90547589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c4ee8220b1ddf19a20a76a6778e62beaef45be2b6d639630574e59cb75322a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM90547590.
Miss T and the Japanese Tourists: Little Girl
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e902e923102733f6c6d4c8b2219106e52c936f26a5142fe359128f08db80c76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM90547591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb69146bc615a7952c57214579518dbd7047ae3217303f588796561b56b7af4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM90547593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d8de0a21a5a4df0e13e7373a84987f1ecd8ac681e0b4681427a9682b43f77a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM90547595.