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 0xd15b57c2c5951eab6e2c7ae93256f4f15b9ab0f3403142cf78e6fb9ad99118e2. 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/9c099d74-2eaf-45a7-a72c-38cdc87f5c3a.json and https://artists.proofprofile.net/proofs/artist/9c099d74-2eaf-45a7-a72c-38cdc87f5c3a.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 0x61914dbd86c9883b077ab24420284e414e1bb3f48272fc2f2bbfef72be27f554. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPTF01814502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29af0627fc4e3c25772b3ac00bce9739b2ef1add9921caa451cdb9fd9188d4d6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF01814506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc302c53784e0f70f7f05f6c614080125a71a52d899244a37d686b1a92909ceff. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPTF01816301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591cda0784d141537bdb51721c16d614f7bf29494aa5161f71fe3606281104f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/JPTF01814503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf264ad6e9c0e059017632d4cfed4b96eeefd95286b5a354665110ac29562966c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPTF01814504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed8d3df7da1af322a3f65f802bc3cfe8a4140b3028903e5b10b645a29bdaee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTF01816302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b842f5622eb857393ca95a09ca4b346ff51623d7365951ae0669e18bbff306. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTF01814505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb9101b05cc3a56ce706ab5eae8056af04d37b66a5f3bbc1ba66d4bf9da053. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTF01816303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ebbf1d1fc6c9775274dd8e9eed006170efe2165cf40395555be87c0977ac5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTF01816304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eecab66fa9ff0a7086151d8caa05094735f5722097f445d1cedcfced2750682. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPTF01814507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc302c53784e0f70f7f05f6c614080125a71a52d899244a37d686b1a92909ceff. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPTF01816301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed8d3df7da1af322a3f65f802bc3cfe8a4140b3028903e5b10b645a29bdaee. 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/JPTF01816302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b842f5622eb857393ca95a09ca4b346ff51623d7365951ae0669e18bbff306. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPTF01814505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb9101b05cc3a56ce706ab5eae8056af04d37b66a5f3bbc1ba66d4bf9da053. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPTF01816303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ebbf1d1fc6c9775274dd8e9eed006170efe2165cf40395555be87c0977ac5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTF01816304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eecab66fa9ff0a7086151d8caa05094735f5722097f445d1cedcfced2750682. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPTF01814507.
世界で一番じゃない貴方を愛したら
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaec4abfe80cbc9c82c80b0413e31e0aaf917e28ee1a325915856e28c6eef46. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPTF01917408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b04c3b40b12ed5a961528f904da3d31bbb65f908dde85dc8dd63d9fe91d3ec. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:02:54Z), 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/JPTF01917401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaec4abfe80cbc9c82c80b0413e31e0aaf917e28ee1a325915856e28c6eef46. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPTF01917408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c431b8a8aae51efe00792f5f50b382ce1bbf40c6dfaefaf88a4ee3318eaf02. 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/JPTF01917409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f9fe1532d4019ddcf828402cc0fd1af6ac4bdf9ac6e9e52ed2fa2bb8e4d456. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPTF02018801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c54076da008ff3faaaed3152073bc0ea0899837deb8d81aa164695e309bf42. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/SE6FC2305482.