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 0xaad5ae7136e322af0991393114268c0a442361c5f042e3e492f1e6fc756d3907. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e565add-ff87-4b1a-a923-29e69d07fa82.json and https://artists.proofprofile.net/proofs/artist/0e565add-ff87-4b1a-a923-29e69d07fa82.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 0x56b91c80744778f1b55882d48ce5e16d5835b5f269816273836e3397556f98ab. 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/TCJPK1913846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94699e9c1eb42ce66c0f057c4f5f75bde5fc7434921d5cb2516dbed64d432b61. 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/TCJPQ2138182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887c6582517d9915d542e7f94dee99060c3ecd6294110464ce37f5876192f172. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCJPQ2138181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94699e9c1eb42ce66c0f057c4f5f75bde5fc7434921d5cb2516dbed64d432b61. 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/TCJPQ2138182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e93575cf24615a10f585099d09225710a0c0001ab3c98f3937826022e176a2c. 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/TCJPR2288597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59e6b51222d7e19204c0c5819f99efebc50156e2f9b2158e562fd02001bafe7. 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/TCJPV2316101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4498ad7e439631d70ad0c663e16a5baac1eca487e6f82b60fcd7ca9336f6da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCJPW2397276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496b27651bf442073a390641130291c2076e535baeabdfe2d2022f239552b94b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCJPW2397301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6450b8ab9560499b71943291c0574ccb6d295076c1f047597872635f84b7c47a. 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/TCJPW2397305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af24abff8b80389f0fcad4425bf0bab99e6777ffe4c8f589b8e06d3de32379. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPW2397312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e54412dd0ab8a13f89d321e5d738b4e0d0b51d14091149bec3178c177fefe. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPW2397322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33633813f3a2ff8c7f9c21eb834205bee10539477c817a43249e61d0670e677d. 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/TCJPC2401925.
YAIBA (feat. タナカユーキ (SPARK!!SOUND!!SHOW!!))
YAIBA (feat. Yuki Tanaka (SPARK!!SOUND!!SHOW!!))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44fc4a3f0a817bf4d2681fd8f0df17e52d805b5829a47e68ecda28fb0d95bd. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCJPH2567540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2843046038a3c8ebd46d65126de2c85427ebb3cf3b091c74669de8601af53c60. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCJPK2526053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5ec92879db2b23e2a1e27eb06c0a976d48cea5714ba02be5b98de69a3c1a5b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GXD7G2598685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44fc4a3f0a817bf4d2681fd8f0df17e52d805b5829a47e68ecda28fb0d95bd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPH2567540.