Abingdon Boys School (stylized as abingdon boys school and abbreviated a.b.s.) is a Japanese alternative rock band formed in 2005. It consists of vocalist Takanori Nishikawa, guitarists Sunao and Hiro
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2fdae92e02487cf21aa81914c65042b9b19e2d99dcad5c52037ba0b362105. 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/5dec891c-b08b-4d0a-8b1d-29d1aa3b3844.json and https://artists.proofprofile.net/proofs/artist/5dec891c-b08b-4d0a-8b1d-29d1aa3b3844.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715689f5b4c4b49211bbc3b44496b8469fe369298bd0090b6b13ba97de678d17. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPES00602501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d48a48ca6805f7eda2a817e06ead562e6fe5210ce8aa168fc46971b8b4c29. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPES00602502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7de049edaa77d87c220a117c292f11b03b77f64814cb78dcf25e84e2a254f7b. 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/JPES00700742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e3904e515614da3889f3b7eccc03f84148d77bb37ebd4c0d567d3ee9dc9d3f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:46Z), 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/JPES00702201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb57a46492a634752ee4f2fd8ea74ab65241c41e04a35b22caaae86eb3ad15. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPES00702203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6505d0cd210d773f9fe931f4c5c07c9ea58a853c0fb48171d0d8ee7cbc1451c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPES00702204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d57da6cc2108fa25511ae9e9f4c7a65548361888fce8a86abe7d7a71eeee52a. 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/JPES00702205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e7d9967628df64fbde1d952a080c3a33c5147642e5d473e0a577bcb329de62. 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/JPES00500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f1692273c296594282242470acda1084b26c9a9f0c8c91384f248b9ace713. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:23:02Z), 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/JPES00702206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d65ec6d344b35c371a83c07d1ea3011ae27f6cc8794754fd36b15d5bc2fd78. 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/JPES00702207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7924984a28232f2352fbec98330a71ffe74f2fd8de1e8f4d68e0911276d7e8b4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPES00702601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba882e6828a6d831f9ee09f2f9b084190d4d56d08eae57fb0902014f7f8973f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPES00702602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa030a13866a37c46968559f825ae597c0a069ee0d50ebb7a91bbe5e71277ceb6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPES00803161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde89e1728304f96c30be0181efd06da2a3333d990bfa52d3636b39f27b9654e6. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPES00803162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5edef0884bf11e6092193ddaeadb4b1fd318e4cebd0080e32a8ca74ed535d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:28Z), 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/JPES00900441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f240ae7086ac48e22cd1937d4bcf3718f981b2840e23dfa75378cafa8d794a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:42:54Z), 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/JPES00900442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7813d6e27026858de040d5fa4c898b0306e4aff0499bef9ffe818b5ba2864f3b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPES00901201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c9abcfa485a0a10ea91eeae386b0bdc8e4723adb6c8e0b1e6ff62e58bc0f51. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/JPES00903187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6142445776fe5ff665614616d3172cd699f56d220be2b989b2a771f1d10eef. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPES00903188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31f317158ba2efa964d6c8155c773bb5b5b0a1a4776497d100663cff4c28ed8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPES00903189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb560761b828e7b243bbdedb6d0b0a151c2d5f547b2b3bb511045737c0979079f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:19:46Z), 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/JPES00903190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade9cff4d5641bea737c4c260b22827dd3b2487e87e9dfaffb5c81992dca4cde. 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/JPES00903191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e3d5d3885db69dd6079dd2c33696ccaaf75f42332621e4c42c87b00a93588. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPES00703041.