Antarctigo Vespucci is an American indie rock band, formed in 2014. The band is composed of punk musicians Chris Farren and Jeff Rosenstock. The band explains their name as a joke: "Amerigo Vespucci
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 0x8772a68fb10c30048e557547fe06da178aa7d4d62917c748e9875368b1804d70. 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/9702d8cb-ec89-4bb0-89a9-ee4fd55b021d.json and https://artists.proofprofile.net/proofs/artist/9702d8cb-ec89-4bb0-89a9-ee4fd55b021d.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 0x66a9a7cd4a8e0593f1a0416a8d8e43c1bac3fe2eb12d4387bff7a6e306ce4ee2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCABW1410233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4cec6de834e948a8fac637a805b809524692cbdedde574d38308434e72e042. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCABW1410239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632bcd92b13832d2140593df4b665b360b8da16de06af5c6c8aca4ce2da895bc. 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/TCABW1410242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f249d18468397d72cb1609992da4a83f0674c8b46cef204dbcd9b3dd98eaf42. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM6N21472132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe69f826fb0eb48e706a9c28a7f0145045f48cf4806c6a5235355754e74bdd9e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM6N21472133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1c9f1a0108754e610b1fec808cd739e91db51e44b2f274cc28ca6f4e0481b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCACB1452371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dccc59f0587739070d4b940c9dd7c7db6b228c179c8ae2fdce1da4e0e756ae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4DW1565177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5052ebc2e4cd3f5807185ccb00e473b732c2b00dded21fd7374224a60e370a5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM4DW1565178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53856cdc664e50c70a7c90db44323dabdc58362039594dffd84ec3034ecbdc7b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4DW1565179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf388d87b5fd6e60c9f5b91caa714cc6dc4e6bcc0236016c76bac681d70685. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QM4DW1565180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacbf56b3f82423956b944b96aa68851d0601cb4807b12f639b9269705ed2075. 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/QM4DW1565181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfaff8e6fe9de782b170a85b7338c1f644d380fdd8563ccbff03510fe93f5bd. 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/QM4DW1565183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e202079ca76cbfb9c7e6942a75f85995cf50bd95588fba5941ac1a31294e5a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QM4DW1565184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fced236bcc00f7f4fb8642c31b09df577124ca949ea44bd99f3a3011bc08daa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM4DW1565185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1e92ba7a07aa7208c2a89ad436fa76cf3a7f7cc0ac4e03f4258242f009f82. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US3R41836901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2820498bf0818682d4cc5c828f52372d0798d36ea2d3f682220784a49f56f3d0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US3R41836906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fffee2f1966e5de3031ff973582546523ef430fbf2e23caea27c3147030c46. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/US3R41836910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472f6644c5ed00686b64cf1a1ec86bdd57f857dcb4a4754a0fde4e2ab96c4bb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3R41836912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e2e863566c2f158e7a829ebf721d08604a4b63267e05577f61851810061d9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US3R41836913.