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 0x6030c62a36350e2bc54f576e86cd2a56d890aa995b06e3550d7d36dc8b33912c. 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/7baee626-6f4a-4d7d-ad4e-eb77b26b9d62.json and https://artists.proofprofile.net/proofs/artist/7baee626-6f4a-4d7d-ad4e-eb77b26b9d62.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 0x73dbededd9b9c96e34166d90cc86ed821006bcae7e1c92321ab43ee6ce266cb6. 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/JPS801405845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bddc6ef8c468dacab161e60587673cf523dce7e9a3c8f6ee651544c92bb6f54. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPS801405846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b07e81f1c169378383f74de9de0e0efaf6e21c59c00d57d7ee12e71e69f9af. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:44:50Z), 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/JPS801405847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1541ad6476d3264c96254648833fe1f60f54db334cf3a28f515595fcb697cb52. 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/JPS801405850.
「マンガをはみだした男 ～赤塚不二夫～」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dfbeffd34f5e11f31abef2d33b4f746a7f18fbec232b7f46e5cdf72d9d1749. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPS809910942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e25bc1f8cde6876642cd4872a7514072cbb2665ea44826136e7e7f0c73b32. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:37:43Z), 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/USA6D1810001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcf88542c968f91690ab0957ef43fed463b59e97c958d52ac1a76a438da4843. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:34Z), 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/TCJPO2132803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a10b47458217328677d152b1e9db5129927b10795f050c2f2c01c8f6d3d6ee. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPO2132840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2fa10bc53b83a482fa5e390cc0e4408bf1dd5cfcbbf132aa89512f6d677a70. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPO2132862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e39946294f75c8092062845a01b93895c59eb75c85efcd011e7232f5cfe4cb3. 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/TCJPO2132743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ba98797226d89a888a3812cefcac47ab45652179e806eee0a12ed50aa5cc6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPO2132746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3547f3beaa41a2d549a7bf54c30f67ba0acf983dcfa56b0df6cf847a9b578624. 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/TCJPO2132750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d8c3bc31cf65ebc5be831dbe6699a4ac0babc04d297724e87a09dc040cb81f. 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/TCJPO2132823.
Star Wars: Visions - AKAKIRI (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc337c9ee887af9542b86f37596827fba238e3c88b1dd212ec7d4aa8e3a717ee5. 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/USWD12112836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f27052f9a4f2884acc38d98041b84beb35431c11e886e4013d4d57cd71f147b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USWD12112842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f9aac6ca7cb7475b44c5b07d1dbeec00836c3dcc38e7f6e6973339159ea357. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPPO02301864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cb6e6a1c4480f3506daab2e04953fdc10e3147cd0fb7e76fc0a2d5ae61eacd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPC542504801.
Kan shite Pai shite Kanpai! (feat. Hanaregumi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174cb4b6fe37269e9a76f10a497ba57f0067d43d86a2f85a3ed205f52f190511. 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/JPC542504805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830c09122c24e4ea766646413d8e3a989a94373e1d438cd1735e67b19045eb94. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:04:01Z), 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/JPC542504807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c156721d2817e6632a76f476403cadcc3a847243dc54ffe245cafab2b7c76b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPC542504808.
Raga Charukeshi (feat. Purbayan Chatterjee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823e89b3b462ed0ca473c570cef03aca58e1e62e2ae8dc38ff57eba9064212a. 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/JPC542504809.
ただいまの歌 ~ふたりぼっちで行こうver.~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c6d96cf69dbe47bbf5d18da6c91ec4bf74c6d088dcdd43e542950a899c80f1. 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/JPVI01814551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d74da8bb160ff4b244b12c3217075df7cba7773993deab0a446dcc2415533f1. 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/JPT551900145.