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 0x218ca5acb0aa999d718c265ce8a3d53ec62ddbc8f3d482284026b70f5dc9f719. 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/8e406b2b-13a4-4c79-a2e2-6c21dc5c03e7.json and https://artists.proofprofile.net/proofs/artist/8e406b2b-13a4-4c79-a2e2-6c21dc5c03e7.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 0xa235db985fe0b622d1dc52bd256c51819fb24970986ee84a554204555e9a9b1c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AEA0Q2338731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3c17f784aa2a2fad21bb09564e829f88010eafcd95cd128fb8c2fa4719ce8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:28Z), 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/AEA0Q2354251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72136d70e2848c217e0c5eea47d895cf6a9bbee1a03a1d13c7a955399bbbd689. 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/RUA1H2462804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f567ef53ec21abc45a535605e3f0c74885b5eb02c9d2cedbff5e16fea7549ac. 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/RUA1H2462802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985d6f9f6f8a4c88f3f136147c926b5282fb2c827517b8ec424efbe78c2e5d81. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ESA122479159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e332ca9f47d2f1eb84a60f56e8a2afcd6b59965d17b9a1a0eb152775468993. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJZ2406031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9106cfb38a9be43f6ee57610e11b00262e6cb749818915979801fae1fabb7f1c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:36:46Z), 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/QZW9L2412153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1aebcd3eddc969fd864f4062c1e334b52a9d1ff89a0d3a6e427d02fb98ba98. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZW9L2416384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd75911d11a384f8830fa32c1a8f2659cea4d3c066eb51c653bab28892d609d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:38:28Z), 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/US7VG2540102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453c9fbf6b6c122b12d6f57177493e8f711619a474143152dc6c187a0f7da663. 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/QZFZ42548848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08053984c21fe21c2b0cb17adf5145d7063c0a53d49b5ecd69128feffd7cf196. 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/QZFZ42546702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0052bcefbbe80ee52fdf182ccfd5c27920b174e8490d9a4242868906126bea8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:39Z), 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/QZDA52553280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cfb667d42be94213d46abb068fcd133c1667b6fb1ab8ebec1ecc83219d2ae. 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/QZK6L2507256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35474149706aed14f847829f39ecdd7fbbc1231ef088d7e4c6f8385ec14e78. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:54Z), 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/QZGLS2597550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794683c6c5418f427be625369d5d711c2d3bb23d4a193333c8b0a9d9d65374b6. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZMZ92506112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f1b86082843060b9fb2432aaa8adad9e01759720fbb618bac66d318fee7d6d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZMZ92586357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12547406e180da51f2390e167787e116a2cdb22e5d97bd885ee404de343ef9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZNJV2574131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc4178abcfc5638017f269f27d733b40ca5208f43550c0998e834c62ffc825b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJZ2509185.