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 0x74c2d03f66515d19f84102530a7b44216d043e096328f449a8911133aa174758. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/691e0e75-b610-4b93-a1f2-26b3cbc8092a.json and https://artists.proofprofile.net/proofs/artist/691e0e75-b610-4b93-a1f2-26b3cbc8092a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best Movie Soundtracks Vol. 3 - Classic
The Lord of the Rings - Medley: Many Meetings/The Ring Goes South/Shadow of the Past
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 0x00bb74b9c3cd39fcd29972e62535ab0fb7db152452581d13b4a99253c9eba4c6. 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/ITRSZ2200318.
Salvate il Soldato Ryan - Hymn to the Fallen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b889fc08b3c8656a8b4d1f752d51c09b8292abd9b360c8955ca194c7858ec. 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/ITRSZ2200320.
Jurassic Park - Medley: Highlights from Jurassic Park
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17abf6d7c644a3a9843b09d4aba36d7d4bdde8d6aa2d0edcc68600445745f9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ITRSZ2200326.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2dfddac23efc45760f13a75c999f66421645aea0ab47d958c664c6e18c8dc3. 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/USPMZ2217302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f620401f1d94457310499711367cbb2c61da1b9a421ba70f0ca9dc378939c. 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/USPMZ2217303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7535436ed033fff287d4ac3b130c762aa8db496b41745b08898a812c9994bb12. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USPMZ2217301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a42e2bc6dc963d35462ebdf52a610acd88d54c77f14dc8fa67d83921f0b204. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USPMZ2217304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f68202e37017030e316755d6d6f5a1ba306aa9e6ecbae28c16b951d9b96fa. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USPMZ2217305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8346dd34110688cbe082a1aee4f24f3070edf6693e979fef31da36d7c0f8403. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USPMZ2217307.