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 0x64ef939c93b4dbd769c991bd4e25e50990a9fc117eb0fc47064f1d8fb6b9faaa. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4db7fa67-e4db-42c7-a581-3e97cc10ac5d.json and https://artists.proofprofile.net/proofs/artist/4db7fa67-e4db-42c7-a581-3e97cc10ac5d.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 0x1f2926ad7060506697d90a6ffd35b67d3762ba0a2376582b102aba15515999b7. 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/JPPO01227660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ea504a8475bfebb34c6557a3b4ee7de4205298fc44037f69288eee2a6c474. 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/JPPO01227661.
ウィスパー・オブ・シェル - 2021リマスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbaedd4de18da58df166bfcd65b9b6c58362c6dd15b99f38dad14ab5550324b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO01227663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab60092ce276eb5e3a02d0e2287884d14492f7a0ddf88f0b1b6deda4a6fd94. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO01227665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418613f1d25a1fb2d18674055611bc576d3b46530f58de5d1096eb2b5f5dfb86. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPPO01506719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515176f26630d122ae308362cca029243a11548a4c68e18396e021d499e44957. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPO02103978.
サンタモニカの夜明け - 2021リマスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178003dff54db69b9fc80983af31e419805bee4ec1be5842b314cd2de787b97b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:33Z), 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/JPPO01227667.
ハロー・ハロー・ハロー - 2021リマスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3004c4cca94f6238a292f628ef667fae45bcce46e182bc44d02cfe70a27341. 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/JPPO01227668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31817a538115960dadcbbc7964dd3f7d9016624860bab8d965bf124f427db88. 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/JPPO01227669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5200387ba2a6b9da3080ffbfad54a803cd1061b1ff734dd7f5b4237d94b7edd. 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/JPPO01227670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22af2aa4a5b1c0c634c87be0b4f3fea2deea618df360991a6199ca3fbf8fd83. 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/JPPO01227672.
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
コンクリート・ウェーブ - 2021リマスター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9880c3c920c43a7c80e5dc971ef9117ebddda231b13739391a6ecdcfb0fe8c68. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPPO01227659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd371a383e9a3d54ec78f325d8b76d353f0456a8a514a31223fa742541485bf2e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPPO01227662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228003f4e98b7c967e85f395667a38a3be43f61426f1d5fdb16be13e3b268ae1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPPO01227664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d5e1113c5e800e4fd32a00f989283939be22f2753c3014f463a8bb2c8f9913. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JPPO01227666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34691e0a250b32735612759d40afa23909b71ed9bdb7cafc14130957cbc1e02. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/JPPO02103977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87454f1bb3dad284a1e18a479c85bfcdbb9d4f6b6d511d148610d0f5c6d55d36. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPPO02103980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4241fc8b1b5c26c870eac702f789b31586f5299d8d80aa65931106eefad495b6. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPPO01227671.