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 0x2d85207a94b586c98b183707e154db4108bcd77d2dd640e0e616ae779c951864. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dca49b5-6f59-4624-bdb7-0026655d8266.json and https://artists.proofprofile.net/proofs/artist/8dca49b5-6f59-4624-bdb7-0026655d8266.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 0x392633f18fe3e11c38288b66dc2b921e725e2879157869c824db43857a24ad58. 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/JPSR01202221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e279a3ee5ec84db109849671f06a27499e446ddbc6964b960518648a1b4277. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/JPSR01103323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d071695c387557973e18648b8eb2b84d08383fcb36dfae7616435d5da6bd22. 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/JPSR01102001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ef127f551b55016a6e159e4c7095b703b4d81a6151187159beee95bf55f2d. 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/JPSR01003507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b31149e56682c2dffbed3068ecb99631ebb8f3574f7a46c45c8b958c07c6ab. 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/JPSR01201521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404fbe7c7112607a6efc0f69aba5782a2a61755a466c757d01e79e1eba55ef23. 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/JPSR01202222.
そして寝る間もなくソリチュード （SNS）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9dd0697498808bba7159771778bd780f297470509e0d6bdcb991ac5a9b5015. 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/JPSR01201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54753fa74c9276d7f7100ff31cc00863f2372a6e15e06af6737661a7615cc58. 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/JPSR01202223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a971019d964a878d80272a10855b8a25cbb5e3c20ba77d94542963461bf2b. 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/JPSR01202224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e279a3ee5ec84db109849671f06a27499e446ddbc6964b960518648a1b4277. 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/JPSR01103323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d071695c387557973e18648b8eb2b84d08383fcb36dfae7616435d5da6bd22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPSR01102001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ef127f551b55016a6e159e4c7095b703b4d81a6151187159beee95bf55f2d. 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/JPSR01003507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6dc1667e1250a05c0d9cb418b6c049753d7edb4afd233c2e57b7180daf3a6b. 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/JPSR01100282.
そして寝る間もなくソリチュード (SNS)