is a Japanese manga series written and illustrated by Kazuki Takahashi. It was serialized in Shueisha's manga magazine Weekly Shōnen Jump between September 1996 and March 2004, with its chapters col
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 0x6c186a6f099e91ab1f99e02b3a9729f22d13c7ee6dde5452eb1b5cda6e53ba2f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fcddd4f-9a10-4349-8ebf-a857eab147ea.json and https://artists.proofprofile.net/proofs/artist/7fcddd4f-9a10-4349-8ebf-a857eab147ea.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 0x3c7b02364a4ecf678a979dcbd03d92ea8b31343c691c753b9d157134518cc8c9. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BXS802400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1161702e8f568c615a86b5b2793baf2fe94450c63c0327d8951d6a206628ab. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BXS802400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96230267afff61da7c718d1f2169710bc8b3f6493d7c70d74adc83fcfa86c79. 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/BXS802400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110350e13014e89edd8a9196abc767f67ec0963bd5730f5a639831809063ba3f. 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/BXS802400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6672eee4407773f0de554b6d299251108bf3d8010823eaaef4b5f5ab860008d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXS802400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82184ccc99204902b39c55409e068e069f1a0c8974022ca727ebefca8a1bee25. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXS802400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50759963b4d6209f439d01967cfe71890e2cd524b02a6b87d69a12d5ea33d68. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BXS802400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58e7b87b67c7da88728cbd61614a1684bf1ae71061311078b7dc66cf4f7a5b6. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/BXS802400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9268944f7db55359d89c8426c9a51b679855070189e34314779bc7be0a41fd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BXS802400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348af352f4d2fe84139e722d80e71a0b52d10b5c91f85d67e18e0281f11fb71. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:54Z), 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/BXS802400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f85ce0ee79936006fdd90d614f7e24e18a7645b356b4299a8f1c8e07b707747. 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/BXS802400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fda0382f352ecbdaf35a59363c0a8f1a16edf45f81a42b3cba93f45d73584d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BXS802400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56267c62e20350a9e776cb56b17c4fad3268bdef17ecc31df480d74755140f56. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:32Z), 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/BXS802400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a150576d5516d79a2219cfea561499af89f8172a8b75e965711fd79e6685f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BXS802400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cac894c1ff76d8c5f751afd634ead03896d2ca1ef01e2d450665f13ddfdb0. 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/BXS802400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9a2a308f9d2604e934a582bbc728bb01f5925cca539f903e048dd736977424. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BXS802400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf87b647c8f444196c443ae0b3370a3777aeee1b20e1852b6d381c2e7bb7b925. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:00Z), 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/BXS802400068.