Tona may refer to: Tona, Bangladesh, village in India Tona, Spain, municipality in the province of Barcelona, Catalonia, Spain Tona, Santander, municipality in Santander, Colombia Tona (beer), Nic
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 0x70ab468a54878f9cf7d5b87c7a949bb627271a012a4132f6d1e0072cf0da86bd. 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/3a45c142-f4d5-4a8e-af20-fc53c5f5e834.json and https://artists.proofprofile.net/proofs/artist/3a45c142-f4d5-4a8e-af20-fc53c5f5e834.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Red Eye (Remix) [feat. Kardinal Offishall & Richie Sosa]
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 0x6b71f00cf612cbde5fd2bdc7457ce92eeaa5f28afc9453a216874624aa3ed30f. 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/QZNMX2224560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b960d9d76d5b0fb90dfc143fbd9f0cc1b2b3796d53a7f01894192a897e998b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMWW2497678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4f109f245b3d77737783f5585685ac3f9dfa7078fce1b06b636c848af5ecc1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DGA092467406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82210f6a2497a01d6b4cfe44e557ff273e70774cee51624e738ebee2bbfec72. 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/QZJG52589150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d449ece531dabdae471ea01ed32bdd2a378a719e708c6b92f05e62be906137. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNMU2543824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793079a9071e71fb640e25211cea1862f2f6de377686cd28622e7f2967dc52eb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR10S2051503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761065fba1afddde0f13caf92c6caf5109fe1f899d14a33a7d180539c721976e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEQT0800724.