Die Wiener Sängerknaben Conducted By Xaver Meyer
{"copyright_id":"0x3a7078dfce9072952630f5dbc510a91e8456cc39ab9fe2344a91b3d026694ebe","name":"Die Wiener Sängerknaben Conducted By Xaver Meyer","registered_at":"2026-06-20T16:29:50Z","symbol":"NIM1653795","token_address":"0x05c207e904ebb17689bb5c8b5c7189bc552dd3e8","type":"artist","uuid":"b8f879b4-936e-443c-afc9-1bafac6cd737"}
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 0x3a7078dfce9072952630f5dbc510a91e8456cc39ab9fe2344a91b3d026694ebe. 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/b8f879b4-936e-443c-afc9-1bafac6cd737.json and https://artists.proofprofile.net/proofs/artist/b8f879b4-936e-443c-afc9-1bafac6cd737.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magic Christmas Carols (Original Recordings)
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 0x1b054819de03279a7ac6a737690ed761a898c399ab5700ed5c3a5d48ce08f234. 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/GBURZ1602234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542076c953380b7e56911ba3edf2fc48d1083faa7dbd19bf16e290173da3144f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBURZ1602224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af9a2bf45160295f3417c4459fc7f6a01a3fe80ce2fd333e68adedb823c8f64. 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/GBURZ1602229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bd77ae29c5d4bcf02ff7f4ae1f0774a028f91f186e576bc948c8350de1d04. 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/GBURZ1602226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c8116ef289633b9ac416f28fecff6f98b5e0bc809aa43ec36ebf38328806c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBURZ1602231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb999dcfda181721a71ec4b334e0f7b2e9f1772813f45f1de621aca6e2c751dc7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBURZ1602232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6309b935e7a4d5190d3cc0c811ddb2ba63d42cd1d8cbbb8c500407b7ad150471. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBURZ1602225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b054819de03279a7ac6a737690ed761a898c399ab5700ed5c3a5d48ce08f234. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBURZ1602234.