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 0x3c54158f09847bed3224332c395f9b365db22792e3c25f8264e5e65b6d816b63. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d89bdd4c-bfaf-4f11-925b-1c5efe42b385.json and https://artists.proofprofile.net/proofs/artist/d89bdd4c-bfaf-4f11-925b-1c5efe42b385.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 0xf7809b8642b5ca6d7e4aa82f76df29e3fda99ca5afb0a670ef786401e2228399. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:06Z), 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/QZWFH2563257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27f4cac8e8e1c82e09d1b5bc651d72aa99b12a6cd8d6f72869a06eb305e4516. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFH2563258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1597b9784110e0dddab9fd162d6c66068aa4d77c58dde747384e9436976b5f3. 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/QZWFH2563259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd346b1dfc7985e06e4ad388b65c70a596beffb012dd6399eaad7597f8e946bb5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFH2563260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d368d99c47336503404f29ce1bd43352f6a3d8e683d288142ef634c1959a17b. 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/QZWFH2563261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e65e94a9231f2c8419f3ba9821990e5281cbe7cc54a8e166578032bba53b79. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFN2512537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cd70c87f1feadb10f4ca099ed6d454ae79aa5fd44d690887d30a0c57899989. 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/QZWFN2512538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eb1d05945d72b0e68e692889c8096f512fe4e99e179cf6b4e0609313a0036c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFN2512539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04a1d9e0912e76a84800f565be81ddace4cf8ce178be3f6cde764245fc123e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFN2512540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d871a4f383d95c3fe15fb5e5ae8d6df7905a19873edb5c1f1cece5aaf53a21a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:41Z), 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/QZWFN2512541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0be58b0a0ef03c25ae916b8bbcebae9aadd83cf1bacaa6007a14a6160a0b376. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFN2512542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b8b7a4e098e9a597a972314223e3032d641adea49289ead33bf0561dc5bf1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFN2512543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34ce5bb2e3e1939b014a60717114d6eeaa96c94fe7bed08d41a3026a410fba2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFN2512544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d77dcf9c4f937fbc672e9f8fa0b8e5b209a3e369f975eba1c17e7b05b90be40. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:28Z), 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/QZWFN2512545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbac34ba4f5f0137863df7f7312e89a92ffbf5c3ceb52c979ab533461477a860. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:12Z), 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/QZWFN2512546.
Reforged (Original Motion Picture Soundtrack)
The Threshold Chronicles (Original Motion Picture Soundtrack)