In ancient Rome, (in-, "not", and fama, "reputation") was a loss of legal or social standing. As a technical term in Roman law, was juridical exclusion from certain protections of Roman citizenship,
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 0x7953ba0f2373b3254ece6d7182dac6ce4289c95ae214dc6fff7b0aa33d39eea1. 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/6da84472-dcbd-458d-acb9-7cb0645ecb9f.json and https://artists.proofprofile.net/proofs/artist/6da84472-dcbd-458d-acb9-7cb0645ecb9f.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 0x558b8c1f75503c3eb5875b12137dfa039f0ccfbe39da46e1d208fe52dbfb59c7. 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/QM6P41776447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579294a64468eccd1d11d2e4d1f17a48a5ae700121a4e889c48d10a0a169118. 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/QM6P41776450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fabeb69c786966fbf47cb3eac961c4d0505017a34cd548053921fd4402e63f. 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/QMBZ91593323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc770fcf192e8870af9061dd91550407240aa3c301e7f2a8596344548ed13814b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P41486005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec068b09b8493c8d3e219ef0428671bc19cdbf5c48b96a805c3e75bd30e24c5. 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/QM6P41486006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d5a3a147211f717d91134b6c565b36e2c6f998fbe171b4f95b3c6bb90136a. 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/QM6P41486007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2ff66fa5fca614f13d3beed3bcea25f38ff94fb74ba7a4d7e93f6c64196e2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6P41486008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540e01f45d9827ce779cb24a4d5e5fa624e889e6a63834bf572012532dd20b3d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P41486009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02b5bb7660cf9774e2a1733a7b80c3f9fd080e80b34cfc7a105370dc8a2d0d4. 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/QM6P41486010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a7eede2d8c0f47439cab78ff8f39dccf8fd0c6387716b109d83632407d4774. 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/ES5621204111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4ce85151be5549f932adc18f8988b7aed5caf98053642befe719ee379abbb9. 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/ES5621204112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c97f7d695ca597d9d99ea3eebce2f412dc7f0c89a55e9cb3fbc0881803e5a. 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/ES5621204115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ceb29a6414084801aeda4e85543122b2f499795afff52f9bfa40a4f92857f4. 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/ES5621204116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc20241b6bbaab46461ce3d9af3a2dbe2a3b5c61a3d5f35de7fe62a4571be4f. 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/ES5621204117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daaf2212165122eee8835bdeec938610312c0b1bbf6d7386cabfc841323bdae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5621003036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e046a548e0bb34191e8aafa94744078d19a678257b9e1571f8526012749b01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5621003041.