Toma or TOMA may refer to: Places Toma, Burkina Faso, a town in Nayala province Toma Department, a department in Nayala province Toma, Banwa, Burkina Faso, a town Tōma, Hokkaidō, Japan, a town Tōma S
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 0xa680ef265eed25544c0c66de9112a5468c680c75eb5944d5c929fa149261e798. 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/a86ab4f0-3776-495b-b6ad-f26ba5c85465.json and https://artists.proofprofile.net/proofs/artist/a86ab4f0-3776-495b-b6ad-f26ba5c85465.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 0xa68c934c8884575bb6aa020d53b2abd53ea422d50a119fa24aa66ef745de25ff. 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/FR27Q1180000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53064c63fa43d72797c977dcbeed656fe0008f4bd74de3a95abad1a2e0d745c2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FR27Q1280000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8e810739ec70eba07ddebb14f8d5df9e8399b216c4e980bbf97f135eba056. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR8FB2003100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ee2b2a850e12ebf1642a33acb78819cb902bb2e76433b772c3ee5c0d6e925. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR8FB1907400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba188136bc246a94377701407ccccbd9a8a12e77a89c2798ac473e50607178e. 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/FR8FB2008710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5f087c39a3929e5752e973cbbfc14c6df6c31b2b23d946edce379cb09cd58. 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/FR8FB1908800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12d4a278ce1541c87fb8a6e003a7bcc88f019ea1bbd02e0d56dfa6c40562504. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/FR8FB2008720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348d8d4d31ec8af0db4df3b1488c7955d951f05baceef3a669f392b24e2a9383. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FR8FB2008740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd554ad1672a3eb7c588886a33a16e60709910a9b20de3f17465ac3b1ed1a6962. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR8FB2008750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204824538794425fb017dd2c2f319d864acec6c3be3f081b26cdd21066d21007. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FR8FB2008760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b40c5d3c054cef9b3d468b2730e81d818aebb38da0cc31d5a7e75b5e4cef1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR8FB2008770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5defbd8cad87ef25363f884d440925c1c2b1043d0e3f87f2992373cc50732b4. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/FR8FB2008780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70c32abb6614882ccb4421c350a8d80fc884753345789969e9d83f2adb3378. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR8FB2130100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2140012ef8e3cc4ab0b49790c05a481c0c0a829f0f03e42a4d14144ac5fde14. 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/FR8FB2135510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb723d6366208fb3e2b6c360fbd20683887021275f402188ff76bfcca375c2b42. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR8FB2135500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc07af641e946c1a2ab869a609102387736ca8b5b4e78826f6c5de499230bb1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR8FB2135540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6940ba82e4c92a9788acc8ed2c8bee1586a986283405e7bd5e449bba04837. 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/FR9W10802659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a628ea66ec493dd8cd1d5d72c5d7647fa41b6b050b47bb6797b0ff204096b. 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/FRUM71600960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4694bfc4fe21eddc4d2e75cff3b529d2f989682fb1db67a5737e9a894e96c62b. 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/FRPGB2531550.