The potato () is a starchy tuberous vegetable native to the Americas that is consumed as a staple food in many parts of the world. Potatoes are underground stem tubers of the plant Solanum tuberosum,
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf1031cba3ab27de9f488d607bfcb7d7e4d77bd7a0111b596d8a6703ea8d6b. 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/e0a183b1-133f-4a5a-ade3-ed2519e5f70c.json and https://artists.proofprofile.net/proofs/artist/e0a183b1-133f-4a5a-ade3-ed2519e5f70c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb612fef7dc5ed8ffec982c41b74bcda162fcd99664257d16eba56cd8c9eeb0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SEYOK2028512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467385bed4d6106b998b0e2e1d6d8d4e4552f018ea3919c7954489d7244b3745. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:10:12Z), 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/NLQS91500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb913adef45c3b1f9a99447b2d47219fc4884a084ce099ea73c00f1976709a243. 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/NLH2L1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0123c8b4a387ea00633765432aa32c45448491522186d6935153d1b40895e9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLBP51600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd378cd83790ff1ab315c6ab7823b0122b7be7142a0cc592d40b7d7eb6cb3d3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLQS91600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64723932056b24efa81b9daf9715740349657c8fff3a4a8bec2f8b2dae84d0e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:57Z), 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/NLH2L1600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbe6f00d1a74b3b608701f8c9e675b41ddfd819c2a44123186e2e0a3620d61b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLBP51600363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9149b77a944225dcab0f63d6f08f1d48fd6fc2392094fbba3fd6a96911b74d9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NL5HJ2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f39b23a3aa614b6ba6d511ca85c0b097f1158edc0cd207e41f7211dc71170. 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/NLBP51600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b82420b5c02fadab94ce33a3c3e334c0137f84793158cb1b9ae489b518d8b77. 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/NLBP51500141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c70436053cd34f4d972017975c80f08e7818551db1152ba0495ae0c96cf822. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLH2L1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d17c2692b97a27fda21daaa9911527dfb1e11a9b1d99f79d2056e5a5b1e3ca4. 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/NLQS91500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cdf05ea70ab245455671a9750c91ad15811edf4d66cb5a3b339689c1fad89. 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/GBKQU2395285.
Toytown - Bass-D, F. Noize, Potato Remix
Toytown (Bass-D, F. Noize, Potato Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7cdf05ea70ab245455671a9750c91ad15811edf4d66cb5a3b339689c1fad89. 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/GBKQU2395285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85a438679442e8a49f27d83d788611097974439f0e08bd8acf33314ab8d9ccc. 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/SEYOK2423215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07f754521129b645d5f9352a07bf9a79bd29a6258e4cc2cd7828e7dce741abb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6MZ2475182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72615fd5d1a348e7ae10ff1e0297e15d12999ac3b02140c1983bb2e2e97a2637. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLBP51600241.
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
Cap'tain Harderz 2015 (Cap'tain Belgium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a7033cb8c448217860b5601b41d687a3b5f89474e998b761f5e8d489d77b23. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLBP50700067.