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 0xc9974bec265abce227dd55af60dcc57b81d815ae2980ff864ee69f6c7ea98f9d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef37209a-0989-4863-9f0c-d16947ed8159.json and https://artists.proofprofile.net/proofs/artist/ef37209a-0989-4863-9f0c-d16947ed8159.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 0xd999f896092e648c854b2fd15f51e5478a6826d425124c31eb4fd472a326e4aa. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCJPY2339571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435cb9202f1e797e03d3cf3cb12643c42cd3923f7902fd29113a609d2e016b27. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/TCJPY2357613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d27113bf7a8529b27692e6f737286b1819fb27e924dd5affce75937a00fb498. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPY2371575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d27113bf7a8529b27692e6f737286b1819fb27e924dd5affce75937a00fb498. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPY2371575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf7eba4f45a24abceea2900dcb530ddbc87dbe034dfc9518c2d47169d6bb8e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPZ2407914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d7992da3a8337e71d6f11a5cb8ea321a05e09f6450c3927b577fa806c5503c. 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/TCJPZ2406622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248679238922474b652e1cebe7484f9391d3c4bc1f18af13321cd91aabf41045. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:59:49Z), 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/TCJPZ2430654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea1f753bbe5cfeb88d8383f452f6cb27efbb818a1bb1a120b7384e354774ae4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPA2458166.
天気になぁれ / 偶然ロマン的ランデヴー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467f4a815e38e81b84ff560f49a5b023d99d2dce7c90c946f7a51c0c794b34f1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPA2471694.
Let There Be Sunshine / Serendipity, Romance and Rendezvous
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467f4a815e38e81b84ff560f49a5b023d99d2dce7c90c946f7a51c0c794b34f1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPA2471694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c93e9614bf0511008b4a1b118c7a8ac493a2fc75fa319ecdc026b780917a3c6. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:36Z), 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/JP92N2507065.
Akebono (Ryoga Tohyama Late Night Remix)
Akebono - Ryoga Tohyama Late Night Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa7f63e94ac25d89c0d3439dbe212010f15c79a86ed2ad5da3edc2fc0a1a4d4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:15Z), 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/TCJPG2531742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa7f63e94ac25d89c0d3439dbe212010f15c79a86ed2ad5da3edc2fc0a1a4d4. 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/TCJPG2531742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dc4919282791b2b227c667a664f3f257f21c4aedc730890782e5324b2b054b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPL2569520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dc4919282791b2b227c667a664f3f257f21c4aedc730890782e5324b2b054b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPL2569520.