Hokuto may refer to: Hokuto Shichisei or the Big Dipper, the Japanese name for the asterism Hokuto (train) the name of train services operating in Hokkaido, Japan Hokuto Corporation, a Tokyo-based Ja
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 0x1b85e1f6b8f973aaff69287a214440a4661609d480670f8117c01a26f6654264. 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/62951003-1fbf-46b6-b60e-f570f57dbbbf.json and https://artists.proofprofile.net/proofs/artist/62951003-1fbf-46b6-b60e-f570f57dbbbf.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 0x5cd06ffa77336a3db64a244ff3826a9726f90fb4448faa54365531da7619fb0e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPE1687510.
SAISEI (feat. WATT a.k.a. YOTTERUBUTTERU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d555120b57a34ce15e03fe864f2471d576a97c9761014202fe830f2fd108fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPE1687511.
10000 POUND (feat. TAKE-M, HANG & CHICO CARLITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab88da70c9f2f85a2a7a79337b0f83539fe46d3347de44dc1c8aa2807c16dce. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCJPE1687513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee76f35d4807402ea69b9ef31129b17d5a8571ffae44831c9675dc1b88f5b44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPE1687514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e0c6d0a3f0a122e47a8541a71e87318d178b5ebc88c543337769701f41bfcd. 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/TCJPE1687521.
Dreamin' of you (feat. SONOMI & haiiro de rossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0826bd477a556b8fe8439cec919db92999e806de656e8718db870abbf69d3ddf. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPE1687530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd06ffa77336a3db64a244ff3826a9726f90fb4448faa54365531da7619fb0e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCJPE1687510.
10000 POUND (feat. テークエム, HANG & CHICO CARLITO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab88da70c9f2f85a2a7a79337b0f83539fe46d3347de44dc1c8aa2807c16dce. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCJPE1687513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee76f35d4807402ea69b9ef31129b17d5a8571ffae44831c9675dc1b88f5b44. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPE1687514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ca06a7cd09e5918b7b56a7754a2d6727d759befc37890da69ec4a01e1a98f6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPE1687527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77922a052a40f8c8026bd813174e4b625f61163aa7c0ab306b775c900a6f41. 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/TCJPP2166094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096aa7174e2476cbf57ee093b4da6852739b4bd426d2f8089e9ba857c5beebb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPP2166089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a414a60cf18034fbcea8153937dabdad24e2035ed64b5d26f348740d8b028cc. 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/TCJPP2166092.
I Think About Music (feat. VIGORMAN & vividboooy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c09d3d05e0e83dc748794f9fcd68a24a20bbf566d6ae5a2219dc41ff9eca11c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPP2166101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae284834b3798247ec1a570cb7b0ed490619bceaf057de34be341ac8ab828c2b. 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/TCJPP2166112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77922a052a40f8c8026bd813174e4b625f61163aa7c0ab306b775c900a6f41. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCJPP2166094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821aaf2b81e9fc29d1f12ad5cba5bfe6b0818b1b302bddd3793a24f417262dae. 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/TCJPT2202431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39215a2540228cf4cb74c5b6a29a3b97e4e05bf36436beec7b67cebcb2f167aa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/TCJPT2202437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c09926f2cec7d988990f9a7b3a4c6c6e98f29698a9c66fe6edbffbe24e0416c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPT2202468.
I Think About Music - tofubeats Remix Ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681687ad2627539dd9e81b176cba3d10ddc439e4b3915de991f6183fd4352634. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPT2202482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c09926f2cec7d988990f9a7b3a4c6c6e98f29698a9c66fe6edbffbe24e0416c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPT2202468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfe40e90824d80d5ba30af72cc73455317777b4f3e43213a0b84d98f99f91af. 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/JPS801962057.