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 0x446087e9d5d6684a371dd2b31b74d2e08f6aced1477d4db236e2acf24be10d2b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/287d9695-a2ff-4193-aa4a-2d0a74e84779.json and https://artists.proofprofile.net/proofs/artist/287d9695-a2ff-4193-aa4a-2d0a74e84779.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 0x77dc785c2acccdbb81ca28f22ce76a7a60c0252f761a064d0f8687b72ea536ae. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPI100401357.
『ガンパレード・オーケストラ』ゲーム主題歌集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f408ef4d2b0ec0f34dd6b122b5abdac6a49b54a4fb6831e965efb3c0b3a999d. 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/JPI100601437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f408ef4d2b0ec0f34dd6b122b5abdac6a49b54a4fb6831e965efb3c0b3a999d. 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/JPI100601437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc295fd69e0b367be8210ebe770cd401b78138c55d3dee3ac9e71f8e8c1385. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPI100600701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ecf444c8e7b96f28e43ae84958bb2894627057aed2df485b0583cb34c8fc9d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI100700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ecf444c8e7b96f28e43ae84958bb2894627057aed2df485b0583cb34c8fc9d. 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/JPI100700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0df3674ee84d75f2f1134cf4a0a9cf356e5e027626664714ed7c42e3e84ca8. 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/JPI100902380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0df3674ee84d75f2f1134cf4a0a9cf356e5e027626664714ed7c42e3e84ca8. 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/JPI100902380.
最後のエデン/星海を往く希望の歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58534644809be416cc01a9ae5e623637f7fb73d17d4d0e803251c18239e22ec5. 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/JPI101001504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235d314737d3671ee7c14d46c5b7889dbf7e7a70cdd7babf3a427be3e74d770. 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/JPI101202581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235d314737d3671ee7c14d46c5b7889dbf7e7a70cdd7babf3a427be3e74d770. 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/JPI101202581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4b8596a17638abd8c40b0c56c2e61038200bf94847b8785a2b76570d88fd24. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/JPI101100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ecd258a8f2a16516a849770837caeb2807296aed1a454528d227a8385db364. 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/JPI100602037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58534644809be416cc01a9ae5e623637f7fb73d17d4d0e803251c18239e22ec5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI101001504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc785c2acccdbb81ca28f22ce76a7a60c0252f761a064d0f8687b72ea536ae. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPI100401357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e0fb7ddad9e686dfaa78e0d56d16a40dd493a4a844d41caa0181a97571d51f. 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/JPU571530002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6957d8ecd425b63752342a3e485717a14194f67c38f2e695075ab5a1537c53b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI101101736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef84b2126cdcadb0dd8fa91cfac43f7d1dd459b79b4982e35be687fa249a3ce. 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/JPKI02215884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfaa5b81ec12a0e92d27205919d03654a009e6dc10f2c2e5527b94084df6482. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPI101101737.
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