Cabbage, comprising several cultivars of Brassica oleracea, is a leafy green, red (purple), or white (pale green) biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is des
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 0xbde9eaf03f4021f118d7a0eaa2ec9ed5c08ea05332a8a7a0221f31966b731a12. 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/c966ba85-def0-4b87-bbf3-87ac82753181.json and https://artists.proofprofile.net/proofs/artist/c966ba85-def0-4b87-bbf3-87ac82753181.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 0xde2621ffc5c8e3fba49ba3c6024e6829786b5883b33c5c5ab13f065fb5280ea6. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZFZ42208695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ede50a2bf76447ee245ece1255aabaf488b675b31f7b3ed45be559da82071. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZTBB2251391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f800af2a979674379dea633daca88cdb51df9d10a27c7fa91bf3e638aac387a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZES62392585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23bab2850bb8f0cbb6f9a9e6cfedacf606dbffec8c94e1c0ace6a5561fdcf2c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN62380984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0107f517f97454c8fad6fdf3a6c5d08d9d3e2bb31298aca9a3ecb9f93ae340. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTAT2389431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2e2ae0a015c7e2d295cc6f90d930a77bd3e82c5dc3d5687d4a99653f5ec6d2. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZTBA2391434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b19d05079439f17dc053707487293a68960bc93df4b79d7090da3bfb3062267. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFH2320012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ade25b028e2a1dfc5d254a07ad3eda870cf001bf07d8e507cf26b9d391af27. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZFYY2435738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fd500ea75d36d1c045f84fe970a755a25cb58d529deb5b876ad3bf978503f0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZES62485393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ab228d2da63ec77e8efb58237ecf00125a5a9d20a7b0a1ac942cb76b06127a. 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/QZK6P2428935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae77b47413f15a85404196b329f184711f7bc8a68860591295400d0fa2d0baec. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZNWR2457685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cd0edaac9db60804e2ed49c4f2d903cde2111babc1a17d9bf0d6471ea96b44. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNWZ2415747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bc35f116f1f98421803ee93ed8032f99b9d642ac1588acc6ec23a81a1d606e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWZ2415748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ab228d2da63ec77e8efb58237ecf00125a5a9d20a7b0a1ac942cb76b06127a. 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/QZK6P2428935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c8a8b2f49ec0bf038c22cd850b3df245b5e40f76639d3faad7b504693a28ac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY2529653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58317cd4325a6ddd05e23017d8b1b4859911fc4ede7afee813a7ac06756c71a. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZFYY2529654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b885d6951a021f2c6becce73038bdb9ddcdbe8a1507274cac950bfad76df620. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFYY2529656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b8b6465d312c17d5255360a3d2d05bf8fdd53e96d5ebf6e86698caf93101eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA82582650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03914bb43f980cfab4a4d50f0789bba4ed96963c4c5e2f79945af4b95a036a45. 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/QZES62597404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4846b16424733cfd44d3afcbf1604af610ca12fef5b6a9a77d0941a73f25c8e1. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZK6M2508018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c962255e778871c4fcd559209062d87050bd6f11cfaed94f5d9b76d50da7d3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTAT2531815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1f52248841832c5d7ae59e57bf530971b4f0c6d2dcf58ba95e0fbb441937c7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB92548013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef143113af8318bc5017acc2ee22059ab2b309343002da1524436a49f0be4061. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7W2594866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2af5f7ff6b27159b1ec179d2981a208c13e7b670ff6f983a9b91711246e72ad. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QT3F32562911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038ff9b9a6114888bd5ebf49a652c821e3234cbc8f72e625d2f2ff29a0233b4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QT6E72524778.