Caso may refer to: Caso (surname), surname Caso, Asturias, municipality in the Principality of Asturias, Spain See also Casso (disambiguation) Cordon and Search Operation (CASO), type of milit
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 0xcb816111d34a3dd3ce5879c4a1da68a72dd6ff456ec6df42d35d7429dd9d74f4. 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/a22a8f85-3cfd-4b8f-959a-f5f5c860a6ea.json and https://artists.proofprofile.net/proofs/artist/a22a8f85-3cfd-4b8f-959a-f5f5c860a6ea.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 0x999e4001fb80ed9e4848425dca32c8e2c5ac1f48255b27c759359c68d0f512c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHO2328146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14824f3cfaf3cf52061f09f0ff4c645a0c2d9c6a7c52f30da28115c986eaab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAHP2394150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1639d9f03b3231ca9ee334507d876f0a682254fbf84ca2309480637f9941debc. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAHZ2453935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3628d3b8a0455463a33af07840b26e80c80acfd81b5ebac4037f817c086abea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812532185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2502896ba65f188bb290593d61ee2edf7d7d0a653e6996c722406466329eff1a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH7812412841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd288edec80742a286f6f1ec54f90e4615c09ec3e8e3c487fb3412d22b7c8d8d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812411862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d405685942fa8a8a6b2794a2d763f695bdcad75819df4136f0e23e9f90f34f5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH7812221348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d405685942fa8a8a6b2794a2d763f695bdcad75819df4136f0e23e9f90f34f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7812221348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a251ea5ab9c703e72d4524594f1ad740dc511f96b9b607af95579760cca966e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWZ2164917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b880e349f46c9288b3ca2031d2a585ad82b99c1c6f09803a403e6355fc99c. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZNWV2195335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240b880e349f46c9288b3ca2031d2a585ad82b99c1c6f09803a403e6355fc99c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWV2195335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cd2506c24ea254f895ee81495e3844dcf58510061804e2028734ad103c7e22. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFC2077764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515866a43a665d50d2183a8b39772a74f5c9e0e94367fae372836f7423b2d6d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62417305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73c69e65810720790abdcf3118c9d498de17b10d706b087f8a15a4f1deceb6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX452489358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991d5ceb28a4c534b56c0407fbfee88f12f51564cfa65df9a99437b3db52cbf2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZV42100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c58c19a07f0d2ccd222d7420db53c551f3cee950787e3b21abd1f53e539e1d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZV42100014.