Hugh Wolff & Saint Paul Chamber Orchestra
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 0xa70b0c47a275b4f5df7f4fbf10a10a17f1153c352307d8d7a397a61e8d7475ef. 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/be3b42ca-2e25-4d53-8077-11b57f772682.json and https://artists.proofprofile.net/proofs/artist/be3b42ca-2e25-4d53-8077-11b57f772682.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bartók : Divertimento, Romanian Folk Dances & Kodály : Marosszék & Galánta Dances (Apex)
Bartók: Divertimento, Sz. 113: I. Allegro non troppo
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 0xe1791c42ac58784e893c2a74185bec69c49e453104a9065d0a3d3ab0ff723f1a. 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/DEA809226801.
Bartók: Divertimento, Sz. 113: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2e4ce76cc4b4777b9a67f9cfcd70fe9765fe6a425af3aa061e2fc58f47839. 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/DEA809226803.
Bartók: 7 Romanian Folk Dances, Sz. 68: No. 1, Jocul cu bâtă
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421de4a0f0432e254311dbd20ba15ad7e9dec67fd8fa0f7563d48091825ce559. 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/DEA809226900.
Bartók: 7 Romanian Folk Dances, Sz. 68: No. 2, Brâul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dc75f1c75d16c20dcc638181ddf33462579dd599e476aa8e4d965ef95b2d4c. 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/DEA809227000.
Bartók: 7 Romanian Folk Dances, Sz. 68: No. 3, Pê-loc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7f9ec34a5e11efc15ea3619bfc7d6ab9b631c8795d1a426ab56b530c050b1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEA809227100.
Bartók: 7 Romanian Folk Dances, Sz. 68: No. 4, Buciumeana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88338233b2a055368ff8a53cc0ec116f03a5d7c9e86650d61400f3aa0f88b7ae. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEA809227200.
Bartók: 7 Romanian Folk Dances, Sz. 68: No. 7, Măruntel. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be64b70647f412f1c12649b0374ca44650c7b88c5743f03bfaa9afdb95d5d7c. 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/DEA809227500.