Toman may refer to: Toman (name) Iranian toman, former Iranian currency unit and planned replacement for the rial Malay term for the giant snakehead Toman (film), a 2018 Czech historical film
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 0x2ee7ce28cf8a18c12772a4145a185caef38e71fcbb3c49e481576a99547303b2. 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/d0dfca6a-354c-4445-82af-ce53bbe3513f.json and https://artists.proofprofile.net/proofs/artist/d0dfca6a-354c-4445-82af-ce53bbe3513f.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 0xdfbffc07af07f8cc1af9e3fb51aa0b557d007f7bc2771aabed91f90f2ce0c158. 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/GBKQU2024336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5a48baa3c2a8fc7c418843c05ec47d8dacbb531c961f16a81f2a4aa677be61. 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/GBKQU2550812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb034faa9f5c3d333ccfde74aed5780921f1b59516538c30744a4d56644cecf70. 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/GBKQU2536138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b82e5831a71f53c9a62eddb4094b0ad55e0aeecc22cc7730f29e93b0c97988e. 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/GBKQU2536137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6ada3816f523b249b9d960a7d6232aeed602dc68fb379da169a443540172da. 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/GBKQU2507906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e1b144e1cb2d4dbc396411908d0e038d0e0fbdc013d244afb2503c9853d501. 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/GBKQU2469932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019fc92f73da70e1dc76843fb361ed7473ab9c1c229d147fa720f2338c880a11. 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/GBKQU2469933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc929183a7b62006b9193312353bb0eb3124f7efdc7ddf81320a865da0048a1c. 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/GBKQU2469934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4727d105dffc9bf770c619fa9cea4619f8b240d84639d66b8dfa99e7895f70. 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/GBKQU2312905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085d9b49048df466f2c01bb6aaab168b142e1fdcab548c7291a95b14a48a284a. 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/DEY472271040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d470ac484b1e1ce21fae4679d3be3a010c1fd02823ead97dc0b818774660e. 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/QZK6M2166175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41577ceab66c3e3ad4b86c52e9afcc142c26e69b0207a92392d7125c4bb21f. 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/QZK6M2166176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4c24518fea21092e4f54a570b552085021a3ef9a21cf1ad415b7003a50548. 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/QZK6M2166177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7c21db3918b2995301df42436aa9279f58848e4d65d3a1574d2023bc2a7fd6. 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/GBLV62038532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaadd801c2bc015c5ca255afee25aa83ee9531d6d592e36a50c021c7362618. 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/NLCK41059031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a3d9b46e083fe904a09b8aef7cd3ab000ed28162852c8693e10a280053ecb0. 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/GBKQU1994649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf46507995bea4d86e0923ad95db37004619f8f75bdedd085ee95e0daa13e7a. 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/GBJX31994013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500f88828274dfadf22c08e382087056c6a01c3c099a150eef91ce34fecf767f. 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/GBKQU1932337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da30883af76fc7784d014fe34a15f6efb8568db13714ca2bfd71f691f506469. 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/GBKQU2479906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edbb63e1c241111208959d3bc619fd4168990425177383ff66d32f01d9fccc5. 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/GBKQU2479907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f9769db1e4008e22477c5cc8044078eb3a59eeb8ccf56a2ee1ec4d4606ccfc. 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/GBKQU2479909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec753b7b21b4d3fa59f4e14ade521a149fa9723dbd12534c1278288cd82a1d9. 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/GBKQU2045639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9025858bd919ff29683ae50f40143a48ce825162d2d427e6e001ba0f84998560. 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/GBKQU2257336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02ea3ca467f686bd10b5a18814e94fc9029c3f6033f81e29706e9e69c48a3b0. 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/GBKQU2472753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772538618943004dbc27e662d87464d668992f47031e51eee3da33170a7b07df. 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/GBKQU2472754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf46507995bea4d86e0923ad95db37004619f8f75bdedd085ee95e0daa13e7a. 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/GBJX31994013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceb2f74da5d9224f9f5733ad4c58b3d12d0a418da6d509f04ddf3ec3c7d16cc. 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/GBKQU1967882.