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 0x73b5513b973fd7d1f28fc336640ab59f264b49ef95b9e851776624f2948ef0e5. 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/92e5e29c-f963-4002-ac33-48684ac80e44.json and https://artists.proofprofile.net/proofs/artist/92e5e29c-f963-4002-ac33-48684ac80e44.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 0x45888dacaef573b342a2b9bf285cf32cac513e2e02daab42d16b772a5d3df56a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPC09250280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aa5ef3d3c7350882e5881ac7df7ca2f9018ffd0d674acbd31d8d3a0959dfe5. 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/JPPC09250290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cfd012d383ca672f3e4344de3ed8a53a11a55d13abe5162e6499bfd4740af6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPC09250300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb554c861773c50160550f73a26ff7274ca1326475182c7d912847f3d211b3c7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPPC09250310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49edf4bdc6b0424ab3770dd182c79ce92a14cbd51567a4c83bb2406588c71ed2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPPC09250320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbc70d060d56b311afcec02ba88fa5a62db3af6b29ec5e4ae680bd5779881a. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/JPPC09250340.
幽☆遊☆白書 オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c306d434aa93bf81c51eafd940bf73182e2bb806dd9352fc2703af4cda555e. 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/JPPC09250250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6591f551377e18182fbddbef0720836e9a2c3c33297a60ad5744a664cc0a6c. 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/JPPC09250350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b405ce8b1320e70b8a89f4e0204b8bea19da512317fe8a54db693e0ca92fe5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPPC09250260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800092cf81da7413c54b3a8a895187dda1aef52e65178eef6defe9e79f66bdb4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPPC09250270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aa5ef3d3c7350882e5881ac7df7ca2f9018ffd0d674acbd31d8d3a0959dfe5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPPC09250290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83141406eb7c80cc44baf89c836daf97ebfabff91d8a4b2077c3c9dddc866e1. 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/JPPC09250330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5e35815b0b0c3734ef6c15c11d4fdc3cc8f2901fb12006e81873a9ae1313dc. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPPC09250360.
幽☆遊☆白書 オリジナルサウンドトラック Vol.2 ～魔界の扉編～
Yu Yu Hakusho Original Soundtrack Vol.2 Makai no Tobira Hen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306770bfbfabbf1776ecbdd42f85775be698d2147d7c3090aabbebfdab65a8cd. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/JPPC09450590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea0b44f563c1955eadfda5eb1e7b8fafa509a7317a513655d0cb78d28f755c. 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/JPPC09450650.
Hohoemi no Bakudan - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358796772cabb91fea13d6fc9fedf5e73b0176fe0ce6096e006a5dea8f9cde42. 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/JPPC09450570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd478d556077433e5a117b49a8f75681b43079f2c0923c0ac270894022c6d9c6c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/JPPC09450580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7a35273ec88ab8b28bf388ee206d2b3c4b2b9189ef8f0499f43b53793efb6f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/JPPC09450600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d92c3d5c49f7f29b0b5413b85c73d926fed32df2ba9eb59344ccc6fd5a76ad. 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/JPPC09450610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdaa53622de24620b866c66961aa20f3cf30125d32872e0f9b2255071346132. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/JPPC09450620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93441d30ebd72da60c5631cb3bafc9106b1730d284edfea62e4f38e451d6573f. 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/JPPC09450630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea0b44f563c1955eadfda5eb1e7b8fafa509a7317a513655d0cb78d28f755c. 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/JPPC09450650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bbb3e3c654872abd608b551f8a0dcd45974f9c600fba6681e1d652df06b891. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/JPPC09450660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc973f357731bd00187506d39b3204baaf6877d0bd9c0d615b30cd1b33731e. 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/JPPC09450670.
「警部補・古畑任三郎」サウンドドラック
『ふしぎ遊戯』オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e632cc79ca21e2ee96472ccd32476d2d3977a8c7b0884f68fe7adad0564cf. 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/JPAP09504203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0514d80ef2017d5b42996820f29ff4f9e844c4973cc347b5d269f0f201c914. 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/JPAP09502502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e9cbb3762cb6aac250e4f1fa71902bc2ad17a8bff8e2e4621e61a219f9ca1. 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/JPAP09504215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a659bf2f3fc107086ad2a49a9921b7794cc955720cebe467ed1211932103c9. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPAP09504216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8675610b89a5379ae4b97e420650d6418f8403167a28696851399add305f7. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/JPPC09539660.
「古畑任三郎」オリジナル サウンドトラック リミックス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8675610b89a5379ae4b97e420650d6418f8403167a28696851399add305f7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPPC09539660.
「笑の大学」オリジナルサウンドトラック
「古畑任三郎」オリジナル・サウンドトラックベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014570ea97d6f40f342d0e037c6597144d4b417136069b2a3b7966bebaac930. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPPC09539540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f965cb69397495b377f4e9a3f520253d9a9cc29a15d80f9f1f61d410f8899. 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/JPPC09407740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534428f36aa9e809b11891b62c277181f9801b709e1fbd7837f9fda587a31f41. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPC09407770.
Japan Air Self-Defense Force Central Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ff6d41e4bc315f53be8ab1efa31748ef183308cd8d3ea3974902921a28fa4e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPZ921502699.