Risso may refer to: Risso, Uruguay Antoine Risso (1777–1845), French naturalist Risso's dolphin, a species of dolphin named by Antoine Risso Eduardo Risso (born 1961), Argentine comic book artist
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 0x2e54a56173c2bfc90e8529c015233e2ad208bf9adbd5bef3a9305a8cf409b36a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46d45955-a971-4f59-a6f4-c20d6e9f227b.json and https://artists.proofprofile.net/proofs/artist/46d45955-a971-4f59-a6f4-c20d6e9f227b.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 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 0x3e9360506928df6551393f625fe1f28d1677fb84e8d19f1e4c0e4b93563045ae. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/KRB471500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a4ea5a43d46880658e253b2bb8b16d30bbf45eca491c78241a67a22d386c6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRB471801722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39832269be42c5a24d6b1cfedc8928f47e19ad95b14ddf9ce8eba13598e1279. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/KSA002100526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d0be5d1b13d984a113cb6859b66fee598d9e44d8def1f9b514dcdda628efc6. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/KRA252300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377f2c600a22a812cbf10dce2b4ea5376450e17d8c3aef4dc3c082c68bb832e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRA252300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316cd6026fb72a5162705da5489dfccace5df1159efcc0750fe8e566dd72d84d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/KRB471700265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad4165f32802a8f4de70569b40884b18f800d2b87aef3eb94325fd5352ccb20. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/KRA252201390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e329702b26b3f512b236816ad1dd8d7d44d7d44694a7b3e9200e130df6ef1c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KSA002101331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17d5200a3d3b4657274081ca7216a96e24624216af2cdfd1401187e22fd0fb6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZEKE2014871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee6e97db133b52e0b4aa565f2c91da950c69975f3bcdb66fde0e38d6ab1914c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRA252500562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09c41624b1303f265e4a7592516d722f54ec311e67d9b3dacdc8cda36f5187b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/KRA252500563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2905e83fe4433b16146545f4e6afb2ee88d5df84dc67a59761e3cd2d72ad5926. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRA252500564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0176d0b2dbf11414c30fe3511e07514558089b0da3fc2ed7eaf94a08c14a508. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/KRA252500565.