Tota may refer to: People Tota (bishop), the Bishop of Selsey (in what is now England) in 786 Tota Roy Chowdhury, an Indian Bengali male actor Tota Singh, Indian politician Vincenzo Tota, Italian
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 0xece4569023aa3e86be816d1b09040645085b6c349505887c3c8093b1735cd410. 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/00ccfbae-9a20-47db-b52e-c3b175797de1.json and https://artists.proofprofile.net/proofs/artist/00ccfbae-9a20-47db-b52e-c3b175797de1.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 0x64109157f38382dacfe499900fbc2cdc93fac6629a97260901161cb1d5dfd301. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:33:14Z), 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/TCADL1822007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad76a1f5b0cfbf885b4761fd6e95014b13acb7ac8f9ee75b5348cfd01dadce. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCADO1857273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5c857fa4f4d9e09155f245b3436f57787319287d8eab62574ec11ecda586d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADP1844222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf392561d7c74b7348c14f073df77e8df8554e37110da03c7cb8670cdb35bfd2. 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/TCADS1830138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910cd304c3226b3f8dfdbde73582ae3e392ad30dd4adcb892666bad9854b9dd. 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/TCADS1830140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f41fba9329d316595002b6346cd12211097353a17c5dcc5507d574832b4100. 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/TCADS1830143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5341ccd92506cf54c813e6ba463f91bbd01049d1d34b278849381b6901c2cc6. 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/TCADS1830144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd343774033ea972e52460c2e1383f32f7b0af16d1c0a0615ddcd0a6fb0a6c9ed. 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/TCADS1830163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d0c555ca43da31a2ad0d0a18021b7a9ea601c18402370de7ddeb4eb1e8a12. 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/TCADS1830164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed4900a21d193cd1095158baa2ac6bf203e506d499393c1a4eb98f7e2cc926e. 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/TCADS1830169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8cc401d1c6bd24947f9bca22682c959195d042101eb3f23599c6b2d2f8545. 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/QZ85M1915227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47c6db13aca51e06ef2e41b391d79431023f6d078d6e82d29ded7c1bc92546. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ85M1944549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c18c10c52b2f0e872862eeb70afe98d252040fa6b54edee5e1b923cf22e76c0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCADJ1760756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2e73efd8460d64012a9e5c7c3f731861448b7cf7d2f2b7c14c8b84782ed750. 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/TCADX1836922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46fa22ffad709c071ee301069824f02f7ad73277d3605042ebd7f6f3dcdc7f1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAEB1911646.