Frank, FRANK, or Franks may refer to: People Frank (given name) Frank (surname) Franks (surname) Franks, a Germanic people in late Roman times Franks, a term in the Muslim world for all western
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 0xfd193b1d1ec5c745bfdbcf5be8ab7cf9009815e4649272c3977fb2ec3d6aa18b. 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/9d4b8cda-c5d0-48d1-ad84-8e681a9cbb5a.json and https://artists.proofprofile.net/proofs/artist/9d4b8cda-c5d0-48d1-ad84-8e681a9cbb5a.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 0x92a54025997ff85f4f74afae7117c973e671ac39446114dd12c7afe3d3345626. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/PLF242007226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dea5bcbab84e41519e9051a94d371dd13d4d0fe86344436ca12e30e1266624. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PLF242007250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e2a646723a83ba2540b5f5cdfa5ce8d33096813dfd65c48e3a8cd1ba87b218. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242007400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd624bce95fc6c5a85d5c156e20bd80e1cd804543602062cab3f9325ade95008. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242007388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045623f67a5a415fde18369fc7536f2e3d6e7992a70fd8d77da09fe559e258f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLF242007316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8d126f64f2e2b7bd9dcb5cf1e6da929a307d73c88b36ebd7235179f57e1e24. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242007401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746c7cc4b19926670d994981f93e5509e1842890b05c0ae206181e9755f0cfc5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/PLF242007402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520da1ecde3743b8084cb4e4f4219fcefd78f4ba6bc282ed944cd9e7de1a0bb. 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/PLF242007389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fcec409fd961d280df1b33d20f0dbe9189431ef867fa1006247530b40ab346. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PLF242007404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb8dab9dce6593650c803cfa88e0ecd39e6efb3fc107e29ea202a10807b9bf0. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/PLA552200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd405b197a3fcebcdfd364ff5b1c356d271b4d06003199b16ec5c6f0fc03c3e16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLF242210631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ed26bfc336f5cb9ce603ffa6af57a0595bf0bbc4b23ddf80f29d738ce63743. 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/PLF242007198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb83d0957fcd8e10a86ddfa19566b933a1c05d6ae1973846d93a2b2b87e7f3. 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/PLF242007335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2ebb9153472fc445ca40d6ed66a1c35a8a2a0bb36d666ac370f21eb3c01d2. 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/PLF242007072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea16b5945523b4c813d9543ccefdfe3bddfb6b9da241c72b2f1fd88af1c3ef. 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/PLF242007336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d317a0fad8638c31643f32a3f5706cbdd9c46ec4de529f6fdc46c002255e20a. 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/PLF242007133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4512315f796660f3c72170ce59d8952f4028ed2e0b4a4a038ab47a69254e1588. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/PLF242007337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c870a5fff3d3cea4d5866bb4675c2d27a25a713d76a4d825f7ed0c2fd1386. 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/PLF242007338.