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 0x9075c18bf6728b73ff6176a345987b7d8c3da02833b0dd34d3ea4309323daebd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37f77bcd-69fe-4c6a-8ef4-33502e139b95.json and https://artists.proofprofile.net/proofs/artist/37f77bcd-69fe-4c6a-8ef4-33502e139b95.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 0xe250fda8c41ff077326ca70d8697f4ff711846f0f8ed8a6bf4d500f8c9a715f4. 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/JPZ922009676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa79b0b85d4f19fc00aa56efc391fbec5635245841604fe15a3a8546f18fd26. 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/JPZ922009677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e68325f8da31a84c29de0016b480e4f3f7c8400d99b5e21b72a4a436321e8a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPZ922009679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9849c4fb686813e2cc7e4b1a27d3ea3e67114e802e718f7a7ea1b94f1580c9c6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:29Z), 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/JPZ922009680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a78b088aa48679b99f445b5faeb8e51e05c525d927b9b8bc161dfe8fc508b83. 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/JPZ922009681.
スウィート・グロウ・オブ・サイレンス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029a402489bad64ad97c019252f92cf79c0b83d8500c4c5dc9286416b602d1e9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPN201200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9c14a9e113b1f3e0cf5f9dc2cd84c3821e9ef66ff175d3bc5e67e413fe5c1d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:48Z), 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/JPN201200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015628f89c1a5666e36ebb7d9a0ed44ebaccd6b34fefc70bf32bd239ec89b5cd. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPN201200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc1bc2c1105b0d5677ed11a2b7c7833024dbc70cc35b0e0ad719fa90c86badb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPN201200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51137289da1fb92e0f60f2fe62f10663cd196c307e1e9378c13c85661efb0732. 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/JPN201200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb6650c1b8527c71530db831acccd7c87722575ec7c8853ef283efccd56a3bc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPN201200771.