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 0xafd5327cd7706f970349c62efa6731e229a9d710b7bfb3b798e657995f5be9b5. 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/32e288be-978e-4c1f-b486-d700445e78d4.json and https://artists.proofprofile.net/proofs/artist/32e288be-978e-4c1f-b486-d700445e78d4.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 0x0a361f5848837a2dabf6068753b4dd13e7d098fac848729f5d4129ffa00f539b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHZ62032720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb467552bfc92a77f3121967567f8b7678e30cda0cd466d97cab3ca9549ae31. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/TCAFE2066028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0936d0670d8173c7df635d4f8b3966e888449129e2ac1b1091f827c166c4edaf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGA2273193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be03f0b3e39109c190939a80aaf7c979ca5e11227115c1cb0fc533d3da90a68. 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/AEA2M2132964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0cc458657018f7631c547dd8a322e95bcb4e2a77d22caae66b977d0bc999c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA2M2131316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a957682f17d0d7bffe0d7f583df1ece6ee2febc675186263625eb2004451d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/AEA2M2132203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb267d29cd09a58ac922f5eeb8b4a2bf775e553ea58a090f415208b9a135fe1a4. 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/AEA2M2132200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6ea55ef83710e4a31e31c54a92a80a483f0ab9d1304671db32ef1a4418bfc. 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/QZW9N2237701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff193f205babf8a356d405edbd2af3d3575e6c1c61367692b32a052ed8c11718. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/US7VG2319487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe146ec0f886969805f742ddc4286809d263b3fe82d09819b94829d8bae86849c. 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/QZGLM2304987.
Emotional Instrumental Music (Violin Version)
I Realized Too Late How You Are Dear to Me (Edit Version)
I Realized Too Late How You Are Dear to Me - Edit Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4edd79cafde67b9853769ec782c82c729624c153aa34928be6f588e0e6ef528. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZMZ92328040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e7bab6b79f7569748799c6aa58754d004d61eb20f69b948e3fb88fdd9226c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNJV2374582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede1dfb5efe2005416443d4927a639b1d7c513962e516f218afd0ebc7511fbd4. 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/QZNJW2316764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b89221f2687b7abf39626f54319731218c954bacb8f53a350862afca10f9a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNJW2340535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee8c897391ad0c6f46652ee3b8704387e195fc7e6464070c952e6929c52f010. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNJV2399378.
In Love with Your Voice (Violin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1454435645c8d5b6d2494981296dc5e726d415fbfc1c6a1fc824c6c277c89711. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZ5AB2480562.
My Internal Voice My Music (Violin Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f8c245210f64ae87b176acfb841970f2d2e048f3d37afe4059ec4152971a6. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QZW9M2461813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d4d4067bb5c822662f8e5ee282842ae966ffbb5a566eb92fec0ec3e9c16da7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZNJW2537054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884123a3bff2e78f55e1d4b05652eee2fa3f91b00c00ca99cfb069d5f7b1f07. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZNJW2537048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a344ec98254fc47b02f8d85e106cb9724f7e6ee1a2db885f2004ac628eccb8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTVM2560230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c698f7891362a5aa9e9fc9035333d0e0b56908428d1efcefe616c7b92f51884. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTVM2563910.