The New Amsterdams is an American band featuring Matthew Pryor of The Get Up Kids. In a certain sense, they represented the acoustic counter-project to The Get up Kids. In contrast to The Get Up Kids,
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 0xea50e9691eed8085f1b430f48867d9fa2ddf7d681bf380e3c9d80997d9f512bc. 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/d98d7eaa-4fb9-4ba5-b96a-b9db02f32c88.json and https://artists.proofprofile.net/proofs/artist/d98d7eaa-4fb9-4ba5-b96a-b9db02f32c88.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 0x7fa66dbaf1b73942f396f79ad3350706f51b20d80a32bbc1317fadd87d3f6e5d. 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/USVR90234701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17695a24bb2805a92797974d55b82711bfc7c8e20e00b22a50ef05efe6727f1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USVR90234702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5681827ed9477f76d46dd4576587d142d89eff16b7828111c2790140c1a13d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USVR90234705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca691e12581242b91e03f1138c0a43ccced1d00290f16eaa4cb2035184b75b30. 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/USVR90234706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8368d6309d5ab51a012b9e37feb06a3bed32dbec1060508bf155d4dfc8f11f9c. 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/USVR90234707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08034d6f366c3c081b6967a654b9f88bc8875d422f5e4c5559b8e704b67bb536. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USVR90234709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3858dc3e337bc81b886d51584b338398b9ce1e6ee56386db32add35b676e525. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USVR90236001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c00ee08d6756d0ad770857cc8a38a3a4a1f6cded7d9f3f4d9630b7408aacbb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USVR90236002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88129c646591770b3591cbe840b64a0cbacb82d5a0a7ffba0ec5cb7922745bbc. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USVR90236004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56a50854b7729ae54d0982e4112cb712b4ad8b4545bcd0c05bb35d1227bc9a7. 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/USVR90236009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa135f19059b25049d45a73b3858dc6b9209e4815194572c95ad6fbff75e686a7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USVR90238302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6382c3ec448ef7307477becf92f200ee9ed7b55159a79502a3e101e80f78d54f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USVR90238304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730c82a68fcd1a31579896923949de8d6adba436cbda9883b9829a9fafaf4e1f. 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/USVR90238306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e5106a61cb99c828e843130dd353a9db0f2ff74d3a24b0e77d95a04241e80. 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/USVR90238308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f51f59608e822346a9b43ddbd31496283991ade3f698f553c22f911b52575. 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/USVR90238310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b9279637c96505e88d72c6819419601772ee183b174bca630e2e2faa8c28df. 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/USVR90238311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22121a0583f282a788ede04859728c6120a1d210bad4d7b9e5ff81ff2e9940b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USVR90642901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897f8a8729e9ae22f9de677aedafee5d0b9c8f54ce653a99d87884edfebc800b. 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/TCABK1200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a3abafd3516577fd58e3e8b435936458d9e80c967d305bf349d45d7dc9a8c7. 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/TCABK1200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9211e051ce29fa2a35f7ba0e268cdd7a1bf0ede3d39dd722b62d17a8bd5b01. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCABK1200242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7032b1cead2036eaa8d63dcdd1b0be67b4858f5e5ae04e35ac75e120ce0874cc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCABK1200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c39270e2d135e70b683994fa43e6f37e917cd3e43365161bcc49630214fce. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USWLX1110203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8354022e23b1b0b566a8d66f7176b2299440b1a927a2c4a575fb79ca656a35. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCACD1539633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c3557b5a4a344f0c805170f60294ce9b467f6fad9ee1eb3b5df991c611a07d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USVR90239712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c00ee08d6756d0ad770857cc8a38a3a4a1f6cded7d9f3f4d9630b7408aacbb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USVR90236002.