In ancient Greek philosophy, () refers to the type of wisdom or intelligence concerned with practical action. It implies good judgment and excellence of character and habits. In Aristotelian ethics,
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 0xd23886ab36e23ab11e357266bd4bf35ee4aec62360131c5136529806d1a67429. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3bac37e-04cd-4049-8d6c-ed8e666c6c67.json and https://artists.proofprofile.net/proofs/artist/f3bac37e-04cd-4049-8d6c-ed8e666c6c67.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 0xbbe3a3cd1c43e4e182825a5a3fb0a6341103bb38b025ebb5d9bcc92118099cc7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBVEV1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ffb470b815ec9a7695c32a8f09e6f42d974b0dc1d82d412e41e694fe1ad50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVEV1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c703c102c6d7e821d114f33ce75fedfc9121e0f733b5484b730c6f40fdae5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVEV1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e07b72bee24c11c5189bd63bcdfe0533cb42a9e5aa6a255e5dda9a9963b70. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBVEV1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c8be9ab2dc1dbae91f78d07fabd0f49957e4ee63e5b6f9164976b0150dcc50. 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/GBVEV1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a63865ae3d82cbcedb9f6937ed92982aa9e1fd58c7c64c0094734b185647f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVEV1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe437f3c26de36d3782acfddfc51bdeb3d59d8e8dca8875a167b8d849b3cfe8c2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBVEV1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ef17c2c185aa953ca411b1a29aec72ffbe66fde25adc55a8184fb6834ba45a. 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/GBVEV1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36b79cb6620d11c066a56ace63ff41b54283173dac07059f799fbd9200256c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBVEV1400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e06e016531201e2901d7316f1b8e3d4ffba6355ef1ed28865de0b3ce4265e. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/GBVEV1400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2782e0838ed00bdef6fccc77d183725eac895b0554872fdb948b8f3fd8412e71. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVEV1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5f4f246918f70c0d34dfa111ce6770e1e08528f4cabeb9c1dd9af7ac557dc2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBVEV1400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7e429098bcb196f2d9f20e09f04c9e8bc6382af553ec53b06de9eec98e7a41. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBVEV1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2f59912dd31485d3cd53a27ddf12a1a1c3f382824fd6518dba340849e4b081. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBVEV1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0f4c1b14e4e30db6391b60d705ba25060f13b6805115a10c3dad76e1ed83e4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBVEV1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a359b878e1ff24fa540e1a1121750451c36ae9f351eec189e24832c914eec. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBVEV1400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb93d8b5ecca14499da28f6e642a5838194deca7f903331553d3c3cc1c7582b. 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/GBVEV1600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0c2440ea4733d0e5c86cedda894aafd5c7bd845fb6c3a8656d9ad7c19462e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBVEV1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3987e2772b09731987262fbd5e045b47c30ef82ea7f74989f5baf0e2e8c02a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVEV1600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8c97a0b227395da51fd6b0c4085e9d8fcf040902122ab80976f04490803b4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBVEV1600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e49d746620164ee5b3d75d1be7636da49b4a4764686ec14a2e4591f394c8c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVEV1600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c8be8601722efb2c4d7b8a7ed34a8c87b23405d40b693cb81ff4580ed7a73e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBVEV1600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc981dc6c4ce517c80cf72bd1fa09772cf0342b374125b326fb7ebe99aac6c. 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/GBVEV1600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8796639fb1e08c18377c58a204e9e6679e939ec15a1325de3a3c41f4344e583. 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/GBVEV1700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c74ff90f6c1258663b669c0e9b1634939a334c822188d59dc7bf963cc3c13. 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/GBVEV1700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb743eea73cb44322fa81e6d5df786b5f8931fd10bbc2c34a9bb19605fdfd22a9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBVEV1700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8fba580ecda2163a3f0c5c1220951c335c90aa36414ef063f8a51cfea98412. 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/GBVEV1700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b97bfd61d812ad6b14c2dd2d2b004ff8af787eda1076934e1b7498f1f1ef1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVEV1700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e70fdc7f2380cc27137b82389a4a754b7b52104678e06fcab4119f591c4f6b3. 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/GBVEV1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f570f0c41e0fa0e3531c532a0d992156d3f27fa483b971376d1953dc966d42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVEV1700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21deaecc824d2b263c23b395c0d8a45195223a9374eec5a4cc3aa222e6881c23. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBVEV1700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e271ed3d36e788240d8464a0c2da967f2526e0ec145263ab89b574d440de33. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVEV1700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51b0a2775fc81b51c8a75a6bfd3758596d7cd7364447cbeb9b676311db0830. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBVEV1700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d0c489307f0ff1dd8b372d9e71afb518d11e55ff5165ac948fcb70b6c29897. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBVEV2100331.