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 0x8c54ff634c127e3ec5c391d783aa675fe181831397ccc4235eb56f2a7344cf32. 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/eb5d3217-17c8-4001-a408-58e3ffe39edf.json and https://artists.proofprofile.net/proofs/artist/eb5d3217-17c8-4001-a408-58e3ffe39edf.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 0xd18deb7f4ed7378fe6cd75b505343e26dc73355246aac486576555ab6dcedd8e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:16Z), 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/ES5590602509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25b509631d516141ff7d9919743317757df880c3ca3d0c2cb67fb0282ce189c. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ES5590602510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7f5eee689706e63fc1a95cd5cef5810926b19f7c0b8243fba6dac806aa8af2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:15Z), 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/ES5590602512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740705724ba08f57e7b656e902380e92fd1d0518cf2122fc8382cf64e4ef5b36. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5590602514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf913b83ba30d0d92c78e34ac7f897bb133a99b9ff352d07a28bc941155a40dad. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:37:26Z), 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/ES5590602517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889b4ca0a4317420bb4caaa89d251397e18a0853b857bf813b1f7f89b8aa0e05. 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/ES5590602518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dbed63cef6d81cc13d73fd54d7050cbd5a2bac9ba095350f96d373cc95b821. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5590602519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21f7a349177e772fdc2754b2896c5fdda6478cdee6b1b1a1827232dd101fc98. 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/ES5590602363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca13ea1894e404b735baaab8a89708bf6adb4d0e56851074c4e1a7f90a8db94. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES5590602369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bef87bafa860fab9cdc6509831ab64beaaeb1853453505248c4e0299dce8aa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:22Z), 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/ES5590602379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22d629d1fc8d9bef44492b601f8fd8b574f00a85b4ad717a25d495a92bd30db. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:13Z), 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/ES5590602381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c22a186f167637d9d21d2684ce28033c55acde0bae33c2948e50a1d7751865. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:49Z), 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/ES5590602382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b792c35dcebfb4e2f52286ddb77a1bdc361664f7e45dc68ca81d0118579087. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:30Z), 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/ES5590602388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54807a94459e0b41fa174689367d61a80d588487c327526f6f29097ec31a0857. 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/ES5590602389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb64c950979b8158c2d7923393cefb5388076f1456c27bbe07d12aa3cbde665. 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/ES5590603179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f15b06c42a2d7151c61f4d4400ff9285394548163d15316899029b9e4dae47. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES5590603187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b7d91ce174e8ec83230a40f7817ef495a1a1913b4f7add03e8bfaea359e584. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5590603194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f86af40123eeefc1c546291bf229a3ccfd3a7faa4fccaa91c5f3ed4f3b1aba. 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/ES5061301404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e624580d7ffe4cfd16ac96a68eadc0b420e7d1956f55674589c87c16aa51aa. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:49Z), 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/ES8241420010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524b0daf01c2ed33cd53bd1dc4c572a4e8076f9cc9446789c6d921c95dc6438. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA082501994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf598c7e68ced148d6c12c3bc9be232bc14e32ab11cab22350e92f75266970723. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA082502165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b156c01fa0da5d0c73333b89dea2d1dfdb2393b66b533d92f535c23e4419528. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAZ2281373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b84b9b7ef377b1daf7b78cc36eccc7db01208366168f7a5d0fdcaaf87418bb2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLBP51600200.