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 0x709d580ae884cef690ce6fe467331cfa1ab3a43627d00ae63062d8c031a6a441. 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/2ad60ee3-7036-4f50-bc43-e9d1add9841f.json and https://artists.proofprofile.net/proofs/artist/2ad60ee3-7036-4f50-bc43-e9d1add9841f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Seven Pounds (Original Motion Picture Soundtrack)
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 0x0558e65aca65803d31fc5245cd12ed99f0c087b74f8c5b1c1f297485cf374f9d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3M50894102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe64cc08e1b288af44bfe5fca387f9421342e7f0f485c358044a5b9b407b93e0. 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/US3M50894103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a28384bba705ba4a4a40dabe146a83d27aab7760d0574dc452532a2730a7bf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3M50894104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7543e5f402a495612e3a911e088fe616f3cd0f0d1dcd510e1432edb73257a67. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3M50894105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c3892b159650b80e5d0e36f0cc345d4e27406d68bc1023cc0a4f7c0be24651. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:46:45Z), 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/US3M50894106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb0b1a8e993b8bdded5d1bb5dc6ff1e695d6871c0a5b4baa697a57412c2db19. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US3M50894107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a9b800340c05798bde24a1a7ca86b96de7ae93c427ec88f9fa08ebcdd6323c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3M50894108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257dd221839a7103822ed10037d324df04bf980a97eab4023afa54172016e0f. 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/US3M50894109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd569855b342ee79b8f89d5116982b41b3e29c5897953e5ea774b9d35c0d6003f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3M50894110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5460d22bfcf5c7de0789a4f1fb86acbb86c406979ff17cacf1657829e7ae018. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/US3M50894111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f11dd0ba6731c6d581f256fde14b549fd3ecd23748fcef9dae8ef924afbc30a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:36:56Z), 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/US3M50894112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f5e8fc98e98a316cfbbefaccd2c634a9b999b08dcaab29c2411671bf2e6a4a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:48Z), 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/US3M50894113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcc197e36ebf33871d6a065feee13a5386ca38851fad4b91a960e4cbec80bff. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:59Z), 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/US3M50894115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7345e6310cbee4b308b843afabaa0578609814843949138c278a5d1e651abf73. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3M50894116.
Resistance (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86ff6aa412a8e899a2706a786cc63f5f61ac8c3d671e2b75e319f2e985f3c6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:26Z), 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/QM4TX2076562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f452c38feb5f62c256de4f7f0f0a0162e5fd2044286714827844430ee5844fd. 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/US66W0500245.