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 0x3f2cc91a79c71b6b30111ceea02d3bf8a85c3189b27a51fe4f91b839f315b8f7. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b03421f9-7aff-4fd6-8da2-9a3ea4a1ed9f.json and https://artists.proofprofile.net/proofs/artist/b03421f9-7aff-4fd6-8da2-9a3ea4a1ed9f.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 0x2347ffe370192cc7a07d5484a45d7484d8e16a2b98187380e4290b718c91b25f. 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/JPVI00734080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636a7f3f2095aa5cb4d4208ebadc91dc1739e1f031ee02aacaf49c8168879055. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/JPVI00734050.
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 0xc9ef40d18b9b26dcaeda0b75c668a90ac1da66d570bb1036dc4589a68add35f7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPVI00724820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78526f8ca77e5bb6b91ec03046d0d3ade0c44794485338f1f1cb0cdea11973. 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/JPVI00644400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06228f930e4872fdc6ca4866191924af3a577d991bf2b28d1eb5ad63e30e6fe8. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPVI00627270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623d28331a5222a761c65ead49e2f06c44c1396834f1e4f29e0c2f48d881db18. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPVI00640330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b309db5d795d334304f3bf378453246097eed26cd2927d5517e74cf80bfb06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:25:47Z), 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/JPVI00517890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a11db9a380654d0e82aa50226ea47979f472be5a494f64dc17ade812c82d948. 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/JPVI00517900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ebf11149eff1a84a26765a3a536f749e37d447d7f4cba453c64385eed92d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00517920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a065732d33b9ef5fd5f1ad49b37edb859ca511019ac8e4583ce6c3c2fc92a86. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00517940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9184e89a043345e6b9a622fafa06d92689046e5dd18907940d65903692d2eb17. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPVI00517950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37438e87ec61e898b071a3184d431c6d337b4737f9aeecfa3f768f5545c70456. 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/JPVI00517960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe446391312fc993e35549c3f700416ade70ead747ef632cdec8da35e6372fd4e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPVI00517910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d4fb5b267355963ab2156acd6fec570ae420c0398477eb7c64b32c6c699c5. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPVI00517970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9855ce24e73b26f8f0664bb9842ad17e3209d215fb0e2ae3298a54cbc5717388. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPVI00517990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031bbcd548269af174937d102dbae97e7362df706e98edfb833e5975ee49a69e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00450700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc4cb1464d995cee7477d4b1e79c447c68dd529069bff09006828c33007a9a7. 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/JPVI00450710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20a04dd19e672db28bfd9c3d8fb4729df5588ca514ebf4914f4f3fb511f16f. 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/JPVI00450730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb495475652d676bd5065bcd4bbd973a95e1b735c9789e4b16d8c35941f35fa. 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/JPVI00450670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e66f5373cb9a2d70636c7455e91c2c7007b714a60e9d1b388e9a42df47f375c. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPVI00450690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051a3fb357fd430de92f4cf6e01eb91827c1e51075c94c8a710f57d47ac18e66. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPVI00450740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5dcebb37700853bc3dcdd22b669e13d69c7821fd9308975b04465c41927b52. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPVI00450680.
lieu de détente -side B- [城下公会堂 Compilation]