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 0x6ca091a0dae37218032e9af75a19388ef86f02e3e6136c159e4fe343e9125755. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93831d92-a624-45b8-9c89-5a24a25137dd.json and https://artists.proofprofile.net/proofs/artist/93831d92-a624-45b8-9c89-5a24a25137dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Won't Back Down: The Story of Legendary Mountain Biker Steve Peat (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 0x2f066d1ca78c9b5d77fe1f64b972e3dff8df85fcb607350b465eec43dbada6d5. 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/QZES81901467.
Unposted (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296b34ad7710a05235f2d04bb7d3554a72f93836fe21b48e5c9a976f51e5c520. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN31901549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49928ac4b2a6e24c72b7ac20c9b7b237c05da4fb67d303b6ebe35894c7b2e93a. 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/QZHN91907008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a94c5dc743730ebe7eaca3fb1386860452dc8e0fb14ecc77db4a038a999e915. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNA2181726.
Waves in C Minor ("Zipper" Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a22a59f1252b947fdb242a21e66bcddfaad237964ab5c6592e26280f15da8. 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/QZWFK2423200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ac186bd2459731ff6eca6d5bd977f3ff03cb5a735f522318d7907d7044a45. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFK2423201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64248ffad3c7aae045bacdf7a2a7cad9d13d5ffa5a2a345d33747f6aad58270. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:02Z), 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/QZWFK2423202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d4d698631d64c4fad8739836d8067351d9c0d4e81f7e084f47a007c1d9d93. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHNC2538570.
Rachmaninov: Vespers "Bogoroditse Devo" (All-Night Vigil) - Alberto Bof Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e797cc6bca05a468db71e4eaa0809851670e8a2f2795d7c39cf82d4d90b9c2. 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/GBUM71507667.