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 0x6f11e4c4be53452a88dba621e4d2e98cd468ceee855cc8615ede87b9c74f5fc1. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8c9f4c6-910e-47a8-9c6c-8ca15f2b2efa.json and https://artists.proofprofile.net/proofs/artist/c8c9f4c6-910e-47a8-9c6c-8ca15f2b2efa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5441c09b4a844e1e59be316ed3e38b6ae8be0344889a550e2b6080d08195454d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:17:12Z), 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/DEAF89599804.
Die allerschönsten Kinderlieder 2. Folge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5c8ef5cd63c58b34a804ba85adcdeb661d67697bf4ac3c656bae90428adea7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEAF89799688.
Kinderchor Flohhaufen: Buntgemixte Kinderlieder zum Mitsingen
Kinderchor Flohhaufen: Buntgemixte Tierlieder zum Mitsingen
Kinderchor Flohhaufen singt die schönsten Kinderlieder (Modern)
Kinderchor Flohhaufen: Buntgemixte Weihnachts-Lieder zum Advent