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 0xd3472f83abaeeba3d542294be17e68effa00981293127faa36123257e80efd55. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/115df051-f524-4218-9100-d5b450562e16.json and https://artists.proofprofile.net/proofs/artist/115df051-f524-4218-9100-d5b450562e16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ベートーヴェン 交響曲第7番イ長調作品92
ベートーヴェン：交響曲第7番イ長調作品92より 第1楽章
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 0x0e08b8fa628653a44f530de08f6325dd088713c82384f40f5f6d383e1d9321c1. 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/JPES00903121.
ベートーヴェン：交響曲第7番イ長調作品92より 第2楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b21bdc1f42cb20befb4710de3b3786a71375f13abed75b649cc739cbad0de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPES00903122.
ベートーヴェン：交響曲第7番イ長調作品92より 第4楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa804bcc85d23d2375745869416790ebd0ff6a00bc94c8a99c08a601bdb2896. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPES00903124.
ドヴォルザーク：チェコ組曲より第2曲 ポルカ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66da1d0ff6b63821ba2ca37144860f00c2fd9d67c441764564b2ef01abfc4f40. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPES00903125.