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 0x9e0f6e6d6e68fdbc630f1282464719a008ee3522744207738f269ee3d5489d41. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6a2bab2-972e-4c8a-9a27-19b3721b519e.json and https://artists.proofprofile.net/proofs/artist/c6a2bab2-972e-4c8a-9a27-19b3721b519e.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 0x6df1d7fa02fe71bffc68579a50b3bf7edaf0213167b6dade6b2a4b8020687924. 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/USASN0903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f04213136bb84acfd7951bbaac0784b4ee393454a329d602bcea0d5ae15918. 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/USASN0903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df6f8b9392ca10ca78fae0c59c3451eb3bd904458c4fa91f59c3e6edf1e4ef5. 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/USASN0903007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527de57320bf7a1c1aa574fd64396cdef98dbc7e6c94b708a3661fd138a80c9. 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/USASN0903008.
I Apologize - Everything I Have Is Yours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e51cdb8ad7e6a505172d2e6e95cda10adaa4fb866d1ee0774abd069eb768ff. 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/USASN0903009.
Tell Me Why - (Just A) Garden In The Rain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73334fd1199866006bd6a5813d693e2af3c90ebdf2f0cbe7e73ac588b3ef552e. 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/USASN0903010.
You'll Never Know - It Might As Well Be Spring
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720cdb6c89df9c554fbffb7f72855ab92582a5929608f14df71e409f26dfcafe. 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/USASN0903011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8454ea55f7c73af27719e9b226634cf5c19e28f6c1f9741af3f9031fb30d0a5. 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/USASN0903012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320b057d6bba2462624fa3a85bafc371778f1c99a14f352798998c5bcbde8b82. 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/USASN0903013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d3bf150f7e903431fb61522b7dcb710357b5eb2e94c79703c8095535aaca5. 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/USASN0903014.
Why Don't You Believe Me - How Important Can It Be
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc083b2b11bf5cd20b31d12a0e6882a15648b01b25b089ce6874e579ee481d08d. 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/USASN0903015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b58288a2f586b17c45f7c52b634022c82adbf77bb9ef696dc6201f91e2668. 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/USASN0903016.
That's My Desire - Music, Maestro, Please
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc677a3f8d720c8ce18aae12921cee69e8785935ca7c1757535e20dfa485f1d2c. 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/USASN0903017.