Ampers&One (; stylized in all caps) is a South Korean boy band formed and managed by FNC Entertainment. The group consists of seven members: Kamden, Brian, Jiho, Siyun, Kyrell, Mackiah, and Seungmo. T
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 0xd12ac2e935bbd9ebf6efb6da493dfec3eab0335bc2a38deaf2f08d2f738f4f0d. 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/2ddada21-a535-4327-ad61-5cfd42cb2ba3.json and https://artists.proofprofile.net/proofs/artist/2ddada21-a535-4327-ad61-5cfd42cb2ba3.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 0xff034eecd6ff764fd2c55dba0ed528fb48038d460bd9bc28e5c8e61bf7644c05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA382401655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdac5722d33afcb56b6189c622401a89019a3ae7da8af8accbbb188dd8d6e82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249e06203c5b3d0f59f47d214487e7b6c60a8c1efd2dffff9d892910ede1f4b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc248531f8893c8f727ec553f5fd71b46fd45aa63feb3b9efe9c6992f6b97131e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3676a555ba3a3c8d9e343dd20334c81fc9aabc2cee1ea11a1f938ec805f9268a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df87d99a48d1cb85b1c2a9312c644ce6a948eaba6dcc19073f1fa4cc444af43. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff7935f2d575ead335748344d962734e1463959dc611b643f6bf222c709d4d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA382502144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf864ba30a138718f21fbfc06e8b88c0fa01ca14d225621cf1b4c64a3dd4c84e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382502145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43d6d86708bb598d990894f15984fc880442984698ac00ad3bb25265844bf29. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA382502146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289fc0030a76c3a939d7fe841469138e9e7676224b280e968ef983e7bdecc2ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA382502148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a611bd88c87ffa48e754358b5ce6b965a37087c09d9e28d0be12189a747ccf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04017dde9db3c8c82162371ef677b8022760c07f5c02b427a6872130e249a723. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cad3ec624fefc618d09d52d43352d900021d73ec463fb0ddfa3e7a7263739dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742caf6e391110214c082addcb683986c64f5552ba98c6c85f0c3db66917e87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8aefa2bf8e47ab5104a177ed1d870aa7d172341ee988a34311705fdd0283c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a120c47808a80f8ac9289c656c9883189bb8f20eda04221cb53b8825d1fd4d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382405957.