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 0x7492592de7c83d4bac95aa682b2a9085b1825b594173006dd3a83476ec8d563e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b0e2d08-b277-468a-b1f8-36bb8313d860.json and https://artists.proofprofile.net/proofs/artist/6b0e2d08-b277-468a-b1f8-36bb8313d860.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 0x3877c3771573d223ed370d2d64c599b290894ec17940513ccfeffbba349d9470. 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/JPS809915364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea005eac05b5dd8e670bd8806a06539da68cc62096ac00d5f03d5cc49724e235. 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/JPS809915365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24e34cb57c7f559d0c805f277af1d023532bd2e6bbb664e0fb4900ef6f995dc. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPS809915366.
私のハートはストップモーション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb086efa8e6e49bba985e05c700ad47b442994a8edf25c66422bf59f61f74fc5b. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/JPS809915368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4040fe31eca3e710bd06e2bc51d95fee7f53d1c518a30ac649790fb5615b2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPS801838514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2ca06cff52e349989df9340a401dfd5d8d953f4c4100024974c464a2c7b66. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPS801838516.
君たちキウイ・パパイア ・マンゴーだね。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05c413789919cb37f1cd94d0e781e810415c028f4f02854da5eceb524c78555. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPS801838517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e4bf21a0a268dc79be5118d307aad8cf281d5e8f97d2acd57e2231da06042f. 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/JPS801838518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213ee1d446c15d36932aaefb17ff5d170811b6e641be073bf5913fa9ca913d38. 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/JPS801838520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eaf7122709fde48662e0c877166ae7d759b11f5f2485db6be4c0f354a7726b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPS801838521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c05525df64e136b71e392851c01f48d69ee84c2bc722fe26eb55dfb8336323. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPS801954747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b47bbb86860fdf0d8d7b85be34152f098c96bceff2e2d862de24a273165612. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPS801954749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80659095158d6b6e235cf5371b6168b89503f764e768a0a097d6b586fa5f5f15. 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/JPS801954751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea4f06ccdbeac56d77cae84b8b6f6d1b6a7f5f7929991cbf5cdfdea3997682a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPE1669271.
HONEY meets ISLAND CAFE - Sea of Love 8- Collaboration with SHONAN by the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694510ba9d90a098369d45e823a493def5284e2897ccee437fafc75dbbc0308e. 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/TCJPW2323594.
HONEY meets ISLAND CAFE - Sea of Love 7 - Collaboration with The Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f5f7a7f240956d7a92735f26f88ab6ba5c4ce70af6518bfb9492fa540e4de. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCJPR2265136.
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