thumb|Diogenes Searching for an Honest Man, attributed to J. H. W. Tischbein () Honesty or truthfulness is a facet of moral character that connotes positive and virtuous attributes such as integrity,
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 0x1e7909a22b09e1e0aad4a9c12b6518028fe395a147520279f0e2855c00c9f30e. 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/5355ba78-069c-4e6e-ae31-059e725d411b.json and https://artists.proofprofile.net/proofs/artist/5355ba78-069c-4e6e-ae31-059e725d411b.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 0xdb9141f361102cc9c139bc76d71a9dfc34c0d19206c321cba6d2afd1bd57911f. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USBQU2300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601edba606358ae8016141b3cfad7cb30814b3e491a32d49344c0c7083b104b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USBQU2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f9b360dffc7dd50fa3d1610bf312e0307b3dd42561da5f8d1f0be8d287f9d6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USBQU2400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a9cc6ba10f2c61541d9f5d4b3afd17a6d2725a07ff2caeedf95230ad5820d7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/USBQU2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eaa0fd3147c566bf7436aa7a0e64435689d0c45a814266d7e02a25b71b38cb. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USBQU2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33169a1e5052f880fd6ed0b8a20cb69840e07d30434ff1ac0299340df7ffd97b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USBQU2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268966e29924573ed562efee439badbe65c83bd6c56505c13924b5faf53bdc77. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USBQU2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97086a285c361a887198501ef7b65f4590a3c82c7b70928024b34460d9ab299. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USBQU2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a9cc6ba10f2c61541d9f5d4b3afd17a6d2725a07ff2caeedf95230ad5820d7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USBQU2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eaa0fd3147c566bf7436aa7a0e64435689d0c45a814266d7e02a25b71b38cb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USBQU2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18576f1bb3ead845b37ffa15954cc6a05484f88d779bda607c790e546480b8ec. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USBQU2300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c6d71e11c677dcdbfa2627d36c9d72260223afe76301d911896070dbaa4526. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USBQU2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97086a285c361a887198501ef7b65f4590a3c82c7b70928024b34460d9ab299. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USBQU2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c966a78ce4dd4feac800ef7b7a7d5c503af3783d5f0603bf8c58940788c840. 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/USBQU2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ce3192217ce72580df7c4bb2bb4acd03fa251d00bb2f8db9c2e0a4e4b94c76. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USBQU2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f25f836647dbff867d1d05f90fb64fdc03ef3f88dcd8a31e4d372c52966c76. 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/USBQU2300154.