thumb|Hungarian goulash in a traditional "bogrács" (cauldron) A cauldron (or a caldron) is a large pot or kettle used for cooking or boiling, typically over an open fire. It often features a lid, an
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 0xb00f01b9ca92a8888bd5bcb4ab144ea23aba14efaede8b73fd4d79b20a52a30a. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92163b15-0e95-44b9-b362-882de38c5bab.json and https://artists.proofprofile.net/proofs/artist/92163b15-0e95-44b9-b362-882de38c5bab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Last Words: Screamed from Behind God's Muzzle
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 0xf8030a298b36e3b3df0488b202163d140b0d5180c3dbec6262a9af90d595f19d. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZFYW2010884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a90b16a8672151ba46db86016f2820e4959a31bd877d5f2d3e1c22b650fe3eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYW2010885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f52b753fc4a870c6ad28733be604e55951c853030961d8068efb92f9a3fe4d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYW2010886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e5f32e396634f64b8de4775f2777a54044faee26acb5bc29844ad9b3e8224c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZFYW2010887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb63bcf2aafd1f6add6af5d4c8504c08a47944f3364e9940d9caeaa8f8c7b3d. 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/QZRP42310986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4c6e24170ef3c54bae27a15fefae09059b7c4a077014e55b5b957cdb4974ef. 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/QZRP42310987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08185cf1f414baf8a17fb590f49bea676faac258b73dfe2b766308221c7fc24f. 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/QZRP42310988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42e2772b562e298e0bd884080fc7df7890a2323aa5451db95123a19063fe522. 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/QZPLS2365338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e447dd6c0805a5d35c8d88cc5a2e3ca1b1c85b2ad10c0809315d078e3e6865. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZRP42310989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b86520c0f145d74545f24ff9b0ad5568c2d9a9592a5da1f4c0c123d55dbbb70. 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/QZRP42310990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a24997753c4835a07d494737313bd1f40cf20af1845d43a1b4824aced57b73d. 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/QZRP42310991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8e577cc1a5f32361af1529effab8e34ead30ec45ca368cab38b494478d4166. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZRP42310992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4784d037974f260eba6d2e017ced4fa1a5a502da61f750060645bcbbc71aefb. 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/QZRP42310993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052bc8d2329bcfa0c1084d2ca928e5112622cafe93255d8ed80bb6f85b593b44. 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/QZRP42310994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b61e6f9596951b11503233fc0a022e0050a646c75f7b56b74bc736b308bd339. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZRP42310995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4732090e9f233a309a120f65aa292547e1ed24f6a0ee92ae1696e1ca86f2398. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZTBC2377666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4732090e9f233a309a120f65aa292547e1ed24f6a0ee92ae1696e1ca86f2398. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTBC2377666.