Father Andrew Fitzgerald O.P (30 November 1763 – 14 December 1843) was a Dominican friar and professor of theology from Kilkenny, Ireland. He attended Kilkenny College, and University of Louvain. He w
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 0x9ba17d81e2ca962e31b9b195966bc89e624ff435c2a46a8dd082ee5ba90762ad. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c26fbfc7-9887-4e65-9101-74324a1d6313.json and https://artists.proofprofile.net/proofs/artist/c26fbfc7-9887-4e65-9101-74324a1d6313.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Walk in the Woods: Relaxing Piano and Strings
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 0xe6ef85cfe1530acd3809b9148308c60821dff395093f15d45e441d6fdf93f284. 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/CASD10602331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95b271f30bae890f4d591ef2a9821b3f085f31b65eac94398065ea530b85d4f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CASD10700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e361fe0ce38815e05e12551eccbb205ba5064cf354476a2ac8f19f7b4c0acd3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CASD10700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b241fae60e68566f3e6b5f1b22281e24ce5e2cb4a09194ff0e59506733ec4e3. 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/CASD10700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d6dbc4b76264f2a51ed1056311eaf9e502bf9a916f9e16544d45d5c4b695cc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CASD10700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a766f3ed162df5028633143c8aacff82c189118c49119f83906797e31b780. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/CASD10700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7e0db102f709b6aa9c27edb1f41a6c33c8660506c9109d45e191289ce3d57. 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/CASD10700153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf295b5285b91197d459788009d54ceda5f31ba157bb444662cc90bd77b1dc6d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CASD10700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc718713c2973a2966ff96e0188c2900879bf793f6ddd31a9599c12ef26011. 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/CASD10700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237dd772c017183bc1c6192d4f3822d1101b5ee065263c007668659cde7db695. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/CASD10700151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289d231db8951843c833d358a24012ce10321d2e7ac4a74555b5a1eee8013af7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CASD10700664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1fe9b15ad23ec3b7058a6c6e7d4357eab55f1ee65280ba682554940439f5c9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CASD10700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da9c1d81daafdedf5ba8707bfbc90a85f50a4fb2860b9cd7ab7c278d0aa529. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CASD10700668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368444fb398018ccb39a0d10885ea070ffc17829093527fbd025197c6f3c4b35. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CASD10700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbcda307e32e9183515e0becbc7ad600b555edc0410482e746cb68050a6a144. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/CASD10700671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2d40a6b37d7a27365023ae5e5caf43294f4a2ec78c5c6a9772f2be77615515. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/CASD11400028.