Settimo (Italian for seventh) may refer to several places in Italy: Settimo, a hamlet of Cinto Caomaggiore, in the Province of Venice Settimo Milanese, a municipality in the Province of Milan Settim
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 0xe7a37a435b9b88639ce18e3eafde26afce8a64cbf4c121f3dd45c433c1aa9bee. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f51ed6cd-eed6-47a8-80f0-829a556ab648.json and https://artists.proofprofile.net/proofs/artist/f51ed6cd-eed6-47a8-80f0-829a556ab648.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 0xaa5534a55630244caec1d188589312f702f206bed5a83bca5ef65219162d940f. 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/CACWV2575142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2486cf14ab98f154972a4764ebe7c432596677f54e2cb4ff31874f45b6de54c4. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CACWV2578444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54899663901ca42164feab734789bea0b0a933222004263384d157918c1ab5ee. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/CACWV2578445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60c2c273177696804d9f63fa7b4cf05030500ecab2424c020c87cc9bf4324ea. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CACWV2578446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf64b3285a0c4b7a875ff31a4ee930e992fbae2348a08bdb2fb436e8a9f1615c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CACWV2588824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71c3f33e99b87ee9fab35f1a380dedb5cdf006e4d5615b10149c5d7d3904aa. 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/CACWV2588826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b49a6d22ef5e6d71f94d01b49b9e9b49d0db0248edc13dbb98803cb5f7e64f4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/CACWV2588825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315e3f7017cb8fb334e1f007b62121c46e4cdcd615b109d19b8a5ded55ebd8a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CAENV2563755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1636e3cbd758a1a90bd2194f4eacdce598554266678b48f1e63c5c850c955569. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CAENV2578578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312bc042120247e698c412253cae2e52551bdbb861f670a8d59906d8e8634cb4. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CAENV2599592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087d02474161c671948a7c3087094295ee01c534393b2f019730041166e0ff77. 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/CAENV2599598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519f767a6940ecd22525e25628aa4a77e87e429cb33923f5a9a38cf1ae35b05. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/CAGOO2535945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dff8ae223fb4d158b90f9d4bb7d3eb66e3454162314837132143d792704af0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CAGOO2552153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9519f767a6940ecd22525e25628aa4a77e87e429cb33923f5a9a38cf1ae35b05. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAGOO2535945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b561b3d8fc7e596f98aa466ff4db4d95db8a437fc40810777fef70d6c01c6b3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAGOO2552167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece18eac83af1ce8ad5c72bad65c0cda952adeacbb93c84993a9a58aec975c1e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CAGOO2552180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f495430432401e8791fa4c732def1cd646e3dc42d04df87152143bec356f9. 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/CAGOO2552182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88be3f6cc317179610cd01ea91477370d6a418d1fd42503054cedf3302e583c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CAGOO2517268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58e10f3e82451618530abfb0a1fc4f9fb59e1719341baff16e041f1c999a5d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CAGOO2552186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c230ca01cd7274ac199b79a6e7872904833e48c8f003660032e9a25cb6879d. 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/CAGOO2552228.