Harpa, common name the "harp snails", is a genus of large predatory sea snails, marine gastropod mollusks in the family Harpidae.Gofas, S.; Bouchet, P. (2015). Harpa Röding, 1798. In: MolluscaBase (20
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 0xaf367594f8e75fbb5da863d70dff86f5d6088c70dfc3d5628092068693d8b78b. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/578b98a1-6a3a-40a9-a5bc-b5cc1270b226.json and https://artists.proofprofile.net/proofs/artist/578b98a1-6a3a-40a9-a5bc-b5cc1270b226.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slängpolska från Småland (Sweden) - Beth Kollé
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 0x07badee076873847e867487414ed14b0a2b42ba3df13a92dfa1baff550bd52de. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM20757143.
O'Farrell's Welcome to Limerick (Ireland) - Sue Richards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2c90723fae78c112ae652dca7da19c5caccc9faebc07e965c148239d3d543a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM20757145.
Anjuli's Lullaby (K. Holsinger) - Kevin Holsinger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35ca274bae9cc3eb5f759f30b86de749f83402bd2f81ea133a1a82d340830d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM20757151.
Harp and Love - Modern Music and Culture from XXI Century (432 Hz Edition)
Harp and Love - Modern Music and Culture from XXI Century