ATBO (; an acronym for At The Beginning of Originality) was a South Korean boy group formed through IST Entertainment's survival competition The Origin – A, B, Or What? in 2022. The group consisted of
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 0xb975dd17d35b5f70b436550c5ac466f5140a05ef0d3b6e02778c5fa80c680fde. 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/492eb6e3-1846-4a12-b6d7-74e2b631ab91.json and https://artists.proofprofile.net/proofs/artist/492eb6e3-1846-4a12-b6d7-74e2b631ab91.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 0x2dbbdb80d65d0107987eeb06b4ef9ff1c00d87cbb291215adec6cda9e8b95805. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA382206380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abd90271772859f540887d60bb168b88f62773d13c67984a28d04c61b49a740. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/KRA382206382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3151d88bc7bde9cfc36af79439554da1d54408541cb063919c03468d52191a2e. 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/KRA382206383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cd7cbf459c809b18ee388e7d18c5b4015228e884c3f4dc2e2a34963a8b84b7. 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/KRA382206384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2f38c6c01745ae5871b05cad3a8d4312ed88370e83f489d2a71ab6c0b0b648. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRA382206385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345d05b58df87456892ba6f0fa1b4392f1387db9b4b3619da546314188d4b471. 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/KRA382208086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d3fd0c0e44f4a4330eb21c98da238ab89d781795ab6b74bed856461cb5309. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRA382208087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccc518bbbaaef4d7b35d8a0de1cc72dd6061f73521cc0faa19dbf2ea1d96df. 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/KRA382208088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2211648303f2837344c063694edc0691e696bd7052c6d80e1d76bc93701940. 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/KRA382208089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e560aba7b2c82d8b97f9df162827f35ea5dcba54010ed7ddc737ae178a12956. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/KRA382208090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be7389038fe50bef6b6517c7c8ec0867091d058aa71d176ba3219437f19ba08. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRA382302318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c48ecb7fe8f2d861fb00f53b3289d8e11e99568a45e47a2ed6f2808d5ef7af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA382302320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d2503fc36e869be6a956e9c679adc226bcce28f5578862cd60ce0bf521432. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRA382302321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d9c50d6c6c9d2be00c5d302c0b58f52afa8b6f4f469c5f535f190b0bfeae9f. 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/KRA382302322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb62499cc20ef678a23030ef27f2211a19d1ed89ab0ef649cdb5a38cfe672910. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRA382302323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec04d23cedbd029d496d42251ddacad19cb0fcaa7a0aae663168e39c35574a73. 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/KSA002301351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9d57af035453e0684adfb98c90a4efc065d08c5c4c6a30dfdf360d19d89a4f. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/KRA382321859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0418b63b8334c17e150badbbdd242970f582d0b6f497e7f6d95e34a4abeb53f8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/KRA382321860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04284491042f6cd6dd76e06ffe133b6e231ac2f64342c9e016365d7acd75e7c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRF702300122.