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 0x04d96e7f5a722d99782c4894fa5725eb79127c0f583e66940d3a5903b56938bb. 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/53c0ee31-8870-436c-99a2-2b6f08ce7e4f.json and https://artists.proofprofile.net/proofs/artist/53c0ee31-8870-436c-99a2-2b6f08ce7e4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
それは小さな光のような-「僕だけがいない街」EDver.-
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 0xf1e84c1430e9038e64d9c13d3d725b9454c5e2082d27b6886a33f8175a72319f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JPU901600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3874616f5d116c6a61170a599781441103064b8795e2c3b93354f3282c73283. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPU901502275.
るーららるーらーるららるーらー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca524fc925132af78604e4ef1453745aeca0dbbc7b5450221c8d2b2e8bd67e41. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/JPU901601431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca524fc925132af78604e4ef1453745aeca0dbbc7b5450221c8d2b2e8bd67e41. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPU901601431.
るーららるーらーるららるーらー -弾き語りver.-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7c4cc39ea7b6b283a35f67e0484683fc06145e7ff02b98bad1e3eb7424a47. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:22:51Z), 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/JPU901603347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2b7f698edab8b543c1ef5f8f3ba8c7c504bccc6881234518e476e8dc671d6f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:59:51Z), 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/JPU901701087.
About a Voyage (My Hero Academia Ending Theme Song) [World Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03514173ef542be499ee28c708d30dd4e7a0350982bf27b8ccb81f6ebceff296. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:17Z), 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/JPU901701104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf182deb543d0a2feaec2ad9ba1a06d921869bc70bf270aa4453609c20f33f444. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPU901701106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2be222b7ee5422da634047b01cba4838598cca09aa925321b02a927e9b451. 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/JPU901701107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882feb798b392f3a43e96822cb571c8571a6a20ee2309e764b414d2509dc1203. 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/JPU902000367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bacb7d96d66eda5b4aa8aadfd0122ab3f8fa35636d899656d2a8498302e23e1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:50:07Z), 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/JPU902000731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ac9495514325cafde826bf4a4ead20794c7ce6785a5908b412e2f7b399d883. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:30Z), 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/JPU902000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c64f04797b1d363cc449cf00cb3c1ee463b26cce4c28f1336e9c74494782c2d. 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/JPU902000375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb66e54c2951f792502285f3cd12a88d867c93e2e785e47fa47284a07915e617. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPU902001643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d34840c96e2bdb0c38ad0b6e491a08a7653cd5a7634752f97b094d4be8d2d26. 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/JPU901900252.
The Brave Fighter of Legend Da-Garn Original Motion Picture Soundtrack, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffcc8a288d90b87b93c9c85466dcc2d5e8e6c56bbce39b332713001a6c56a3f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/JPVI09224770.
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