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 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 0x2d85207a94b586c98b183707e154db4108bcd77d2dd640e0e616ae779c951864. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). 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 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 0x392633f18fe3e11c38288b66dc2b921e725e2879157869c824db43857a24ad58. 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/JPSR01202221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e279a3ee5ec84db109849671f06a27499e446ddbc6964b960518648a1b4277. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPSR01103323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d071695c387557973e18648b8eb2b84d08383fcb36dfae7616435d5da6bd22. 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/JPSR01102001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639af7b321faf471f1b880ddb454a4a86ffc9248482bce5c04257a7f1aa8cd2. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPSR01002407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ef127f551b55016a6e159e4c7095b703b4d81a6151187159beee95bf55f2d. 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/JPSR01003507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b31149e56682c2dffbed3068ecb99631ebb8f3574f7a46c45c8b958c07c6ab. 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/JPSR01201521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ce96efe3fcf9da3e0f888d23fdb875ceedbb771e13e77d5dd84c080a085ac6. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPSR01100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d84bd0d965b74d401fe77d79099d176aab5078186484b9502509b923e65b8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPSR01103321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404fbe7c7112607a6efc0f69aba5782a2a61755a466c757d01e79e1eba55ef23. 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/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 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/JPSR01201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54753fa74c9276d7f7100ff31cc00863f2372a6e15e06af6737661a7615cc58. 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/JPSR01202223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb55533007c729078625a31e3b16d891029b344b27a81359a98302a0e14b42f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPSR01102041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a971019d964a878d80272a10855b8a25cbb5e3c20ba77d94542963461bf2b. 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/JPSR01202224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d84bd0d965b74d401fe77d79099d176aab5078186484b9502509b923e65b8. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/JPSR01103321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b3b4d33eb3554f53594b2df5da0d950f13aa9a89b59b6b7f76b8764ffd110d. 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/JPSR01103322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e279a3ee5ec84db109849671f06a27499e446ddbc6964b960518648a1b4277. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPSR01103323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851d258a5e15163ba58ee6b13433859450657b3c00499d5e8ec7990d135a90bc. 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/JPSR01103324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d071695c387557973e18648b8eb2b84d08383fcb36dfae7616435d5da6bd22. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 0xb639af7b321faf471f1b880ddb454a4a86ffc9248482bce5c04257a7f1aa8cd2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPSR01002407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17caf6da8b8d61fe0905f72969c490bce4d648a5f527ae998f30f211aaebd8e8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPSR01102081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ce96efe3fcf9da3e0f888d23fdb875ceedbb771e13e77d5dd84c080a085ac6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPSR01100281.
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)