Gamba or Gambas may refer to: Geography Gamba, Gabon, a port Gamba Airport in Gamba, Gabon Gamba, Chad, a town Gamba County, Tibet People Gamba (surname) Gamba (footballer) (Carlos Alberto Gambarott
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 0x254036028691b4884410ed6dec5c83d97d5754b701fe9721f394ce0099b5b98c. 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/f2f4965c-a5d8-40a5-929a-6bb642f72b0d.json and https://artists.proofprofile.net/proofs/artist/f2f4965c-a5d8-40a5-929a-6bb642f72b0d.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 0xbaf35253ad896704f75bde49ac30816e134fcdc5212bc56241079bf37810c94c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN92058713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ff02a81a53027556147a506eec8bf162d86e802d09f25ea356d01be2241a2f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZHN92058714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1ab8e0e7040aabad08a6e94f891e5094d96e0168d4d9741156fa85119a232. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN92058719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a759f3d758ea77e3216be5b8914b78b3bd19d038a8681af0f0db7c0cb5d3b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWX2007039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ba34a0585d55eed229940f08163de02407851a2582102b927b81e816339b2b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWX2007118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e5b5f2792d0c0a2789097b45929f7900770d8345ebba99fa4c5d4624036aec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAS2130783.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe832716679e70327336b475a30300c34666fdb4a92609df273839ab0d8928304. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEQ2331233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b853ac8010a67486bebbed53bee7a1ecd5bc0bab95c534ea5ca8dbb6c680a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZTBD2322670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331552dd0bf329b093a3a511eb2fa210b42779d8c6f005f5bfbdc28629d84d0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6N2427530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca11d1d4fac56928e4bbe51dc3c1faded302b0772f009c0983b650ed3e0e050. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTB72553437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4bf68289b5e9022415f62fa04e687f1ac8875106066ce0579724a226721a28. 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/USCGH2311936.