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 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 0xb8932ca954ff3489ac4211d37f5dfab27497e4cc653be23353d6361eb3855d4d. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d24b0fd1-9ced-41aa-b575-d6599276bd99.json and https://artists.proofprofile.net/proofs/artist/d24b0fd1-9ced-41aa-b575-d6599276bd99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haunted House - Tense & Mysterious Strings
Memories : Human Story and Documentary Trailers
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 0x99c52e1efb84d70f3f0446824f5f90b55b2bbe15e92eea39f8a336d3536412ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQ882202985.
Volition: Modern Neoclassical Strings Trailers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2fe4d157b39c3a34d9e717841d231106f0729af52b4186ee73f9fa77cce4c8. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZQ882201913.
Pomp And Circumstance (Pomp And Circumstance, Op. 38, No. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb52600a1448925915b65a58a25adaf7c2bb8b0c76917cd3367c96c022945f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BGA472002780.
In The Hall Of The Mountain King (First movement of Peer Gynt Suite No. 4, Op. 46)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf20d10292e8b1f15064fccb5ac7874b1e3893974946d5069e6595f5099106ae. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BGA472002781.
Air On The G String (Air on the G String, BWV 1068)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe11e6256fba37d68a4b49678fbf8596cd50e04aaa47f0a37808b5c96bf2a2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BGA472002783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e99442dd63ea164e28f97a5760ab9b515a78def07361e2bb22f8cf153c643. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/UKQ5E2134007.