thumb|right|French bean pods on a plant A bean is the seed of plants in many genera of the legume family (Fabaceae) used as a vegetable for human consumption or animal feed. The seeds are sold fresh
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 0xa0d5f31061f66dadaeb415e8e9dea2292441c531b0f510e05059aa19cea46083. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4897d140-4285-4e53-94ef-df3b38eaaba7.json and https://artists.proofprofile.net/proofs/artist/4897d140-4285-4e53-94ef-df3b38eaaba7.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 0xf8a79a070e1db889fe4c3341ff6805d485dbf59fc03b62fae87cccf44b1f2329. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBWUL2312379.
kamado tanjiro no uta (smokestack version) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89a6af5c1b3830b661c2ced9b890570a7ced9d065534905443321f77534fb1. 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/GBWUL2312383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ab913026c2c78d2255d37082599e240688eea7767e3d8ad770f0eda40f6fa. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBWUL2312387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d86229def03f153b295de8a860dc39738e332b1c9b8d541da929da85cab3da. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBWUL2312398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c25b0240fce11bbb1afb4472bba04e545d7505ac99aa4f502e2592e2c788692. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBWUL2312401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe7ab96065d81c28696d851cdac93924406daf2c72cf9c338e80d2900f53d86. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBWUL2312406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de5a92fdcae6097fead10f8c7cbe21e09b8396a5fc85cde6d17b58dae401b34. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/GBWUL2312411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e592e7ea2b1ea9c33ff76a13bfe243f5c828dfc29f43bd2185e94d3d8385ee4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBWUL2312416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53119831cce6339e4b7403d57eea41ede490e60d6d3de02c160a1ac34f6b8d0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBWUL2312419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4a336cc3c9e706acb8003930362d3f8421909169b8fdfbc8ead59989b35dce. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GBWUL2312421.
kamado tanjiro no uta (dream state version) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b3a58f0c25b61814235191970462a2f8ab44bbb0403203fb04e967fa5ed7be. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBWUL2312424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1288e0cec45ab74e7cf8b43675347e7ca1e778fc25b445d901bbbf4c43034. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/GBWUL2312430.
antinomy // nier:automata ver1.1a - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783700728aeb17a2c08011791214e9ef6640598d05e992b46d20ea0197784505. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBWUL2316150.
kitakaze // my hero academia - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d95492b65dbee421a808a8f87c87f58725cd672e04bad71c6abb3b97bf68cf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBWUL2316193.
without love // vinland saga - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222e91edf511562bc1c73d5d6afafcad8a6a1ee501301c096acc2f9da0e2b156. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBWUL2316216.