may refer to: Fictional characters Akuma, the race that the members of the heavy metal band Seikima-II portray Akuma, the villain in Karateka (video game) Akuma, demonic army in D.Gray-man media Aku
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 0x95e53028d19a310d276266a830460ce129240106806fb31ea875e62a5897c454. 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/7aff4115-90fb-46b9-9ff6-a93c331ca7cd.json and https://artists.proofprofile.net/proofs/artist/7aff4115-90fb-46b9-9ff6-a93c331ca7cd.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 0x2ce0b8851243c17e8d9abce9178a35416a70c1dc753d23f454ff1f5f949d92d9. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZFZ41926496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ae6dfb1b672fab47c6ac1b00ea546544432896752a049d1b94588d8dc3b36. 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/QZHN91942857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da106f58477f014b30d63dffe28622177b5a768f3eb44cc7ab0085d3a8e6bb5. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZDA42149951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c147b6601e576127fc150005b2fabeb4ea3a3afaef82c1c46354b3931bcb4c. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR96X2134867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b2e4f572162a296d482623bbc35571a46c1ef46f90528afbddd9b10be568ff. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/FRX202127841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7568b66f4375067939da22ad15fe766cca79bc9c8734c41c05bd9055be52ac. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FRX452194077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d03e443c31c765683cd782d8bfc2d885bf76ec1ecc2837852252ce1fe9da2a. 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/FR2X42252736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fccd31bac5e2ef0c6b2eaa8bfef57a4931e130804945b852e9d383e88f8cd1. 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/FR2X42252732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c4d801a8575133d57a6fc059100981ff50991cbd09252e07c278b9265f64cb. 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/FR2X42252734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4869bea2f64590f120d8aeab4716cb3027f73f89009e1929df2fd8f793af433. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR2X42252735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28897b5a63c294ad8da26a33fd14629854bc9722e99972e3a5823b39c5e175a4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X42252738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0892da4019ed8443bcf9e175b111609a1d359e95e0765c8301cd119d2cbbcc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR10S2378202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08372ca8f18b02e9e4e7be9e466a0887af1e3f681f5ce320d56aaf0193054896. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR59R2343745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f42e97d1c6afcdc8e76c5008e59b2ba5a9e958cda51c8d587437be1d544adc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR59R2371972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745405b6aa4d9a262c9b5ee6a89216684cef06c164635d3501ec7d469227c60b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/FRX452303110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0892da4019ed8443bcf9e175b111609a1d359e95e0765c8301cd119d2cbbcc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2378202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c2f04e9d3fe0e5e26a3c9e0f342b14371ef1aee331fae7b356cddb178dd76. 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/FR2X42392922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f42e97d1c6afcdc8e76c5008e59b2ba5a9e958cda51c8d587437be1d544adc. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR59R2371972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfb5d14b25075c48b9d13c507f90c7965ef22254975eeb24d6163c23fa91f76. 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/FRX452302432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf390a852066735b66538fc282b9309e3b75e4754cffe92f163d810e3d1070172. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX452302429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e568ff2e2114731ba110288bcc895096fe4d54a07f6a168ad57f0796614ee6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRX452302430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a215dd8cea19debc572f5d2aaa438df1add566fcf02044cddd8454e7f7b043. 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/DEZC62412959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dced68174fe9091387deaa542a6d7c424f96e343b99df3d24586aab2f38e8d. 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/DEZC62404056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351d93a2fe21aad4b6238fd71a5004995c75b9261624d6869da8e894c0fb1f82. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62414494.