Regula may refer to: Regula (name) Regula (architecture), a feature of the Doric order in classical architecture Regula (saint), a Coptic Orthodox and Roman Catholic saint Regula (ship, 1993), a
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 0x4ab20030fe8dd29e45952505b295247c6164e6ac024eaad0287fd7ef1a10f637. 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/d1a3c99e-1f0c-4d4b-8a13-b07a6802f949.json and https://artists.proofprofile.net/proofs/artist/d1a3c99e-1f0c-4d4b-8a13-b07a6802f949.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 0x55823b5402efd68205a56a06c1543f2d27aa681e8e7af009a038c12cb108b1d4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QMDA61364530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b494a80160aa0cf30c1ef0393359c58258f7df5c1a81d64b7182bacb3763db. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QMDA61364535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687c51964706f091ed08263127c4fc75a758f0b722a10e4e0c3328db1270496. 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/QMDA61364539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f403db99a5cb5ed05395c11d7058e2409cdc3c5e079b20dd8296cc3b03738. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/PT3HX1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff97ebd059824cc3ad0210d64af97bb8c30894735ec00c2bdccdb69300d97cc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/PT3HX1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d1a823adca2be1daf16050a09f9c4a5f5a7fefccdb755ecd5dedd11434a59f. 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/PT3HX1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d29fd1bc312281315222c6b5126e9e646a98024b25f0e03ef983e1ae7368b9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/PT3HX1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1b41d9ebe573dfc04e3f13e43330799a27998e7174c68867d8132fe4053f24. 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/PT3HX1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98a83fb34bbd1df973f638a335ef3def5ca4a58b0a8f63d0b630f37c0dd489d. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/PT3HX1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b32cd33c67b06878cbaacac898c487b562d4d580eef91f09d3cb42fe39267. 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/QMBZ91611296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2f05aa297989d4b5094ff819afe19ddfa2d44385f1fcf8be3dc6035777f87. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMBZ91611297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ebae49bb880a3cf48366ac8c9bb1dae44a4160c2e17c35e21ae0fda93b2fd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QMBZ91611299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe627eb840776bdde72f03bc19943a33a196caa84e96d35f366f268195affdda. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMBZ91611301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0c129ff2b2aa0d7526846e73854e489ee21ae9aafebca279debeeee4e3e62f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMBZ91611303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1843218f2eb42b3a0c892033bf6a9f5e98f3a8df93eadaf538de19c167aed024. 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/USV291475217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187e0506f577b39a2ef871f0786446a78550c5c391ef6c4e800ddd300de6358f. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/ES71G2236584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c84f08bbed597d5c5ac19289cc850979ce09330b6c0eac7c0322f658d16281. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ES71G1947784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc88f371fd75feade12569aabaad81826bd3ff9048486167e45c41db23fb7d2. 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/ES71G2238217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ed934fdcab3d98dea6148b88d195d404fd679cb64e88baa08bbafeb4420ee9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES71G2238220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be931d712169e1bbc9a6d4a4196946b185dbfaea7762fdf287dbfa9b7375c7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/ES71G2404585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004d81475e25dc2e91cf30e4dc106268e1c9ef88e99dd5c710751132a23b176. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES71G2404583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5dae08cb0949bb8dc7085ae7ce77bc7c140cbba7e1f4d7370fa3852c44cacf. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ES71G2404588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a7294271100e545bf94388fb547536e26ecdd5a55c0f11fcdf8862c5b0ebe. 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/ES71G2404584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3633bae47d10698f7e5a1f07bb424ebae5d249c4d9d68c7b4d28341d3c6f419. 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/ES71G2404586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154aae5f59d8344eb39a4b45f8efcaec814c7b01f84c96d1ff0b0266b0473b5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES71G2404587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc7547bfba6f0b5e1fb68c520421fa33cfa5eec56e7c7b144438225268663e9. 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/ES71G2404589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8fde0bbceebf404557a9a5bf039f0b6ecee5e9a38f21023bc3e616f9789e9d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES71G2404591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340375d5668c554f2b91d75ab594fd9a2b6e5e7a4ccb104b4f5e851624d0eded. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ES71G2404592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4307cdb8332869a56023de3e2ffa47700bb982d9152bb94f95a85a1b254eec1d. 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/ES71G2404590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380dcd65b26de2e06f6021be157a032fdf5a4bfd21dc4409fbfb112893a8cabe. 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/ES71G2404593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc3d890e39511d5cdc9e7105833f588489e03c06a71b52e90cc4df158a8fd0b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES71G2404595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12a346590fee91bd954557e461caa3a29fa62bb12c8e15b5df663f157ad007. 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/ES71G2404597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66fa3590054fd6b8927d77883b3787443bcf2ec4e1c91d560d0c6b3c2ddf7e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2404596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4dcd26438292c882880c540f34964711e9a024a7e2ebbb3e00a69e231e954b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZRP52173123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea7e59b187ea50fe231071c5f023592657e0d43efccaa3782779035ec85deff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PT2DN1500016.