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 0xab467ce8a94c384e7abd33db175d4d36b225937e5664299c3feb562951981887. 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/dc5cdd27-5599-4454-a39e-fa5de8410b43.json and https://artists.proofprofile.net/proofs/artist/dc5cdd27-5599-4454-a39e-fa5de8410b43.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 0x0d5962791ac4ddeb3bb5b60ad6aa603c8601283fd1cdba7ecb0c7156c0f4ad0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAX2293959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e120c765cd9ca1d6a7135a04db03cf665b690278832b88159fbe097a7ffcce2. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZTAX2293960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cef15fb158aaa46c612b0ba04e2b5a14c6f724510f6d2a9a4c257722092c0e. 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/QZTAX2293962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89519ab3c84de56ed441ea4429a1b21d4d8c5ae577ccc54acf027c122755d3f. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZDA52337425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd187fc928ff94ea58daa43fa9efe784047873cb0c8f6663c3360156123f96cfd. 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/QZDA52337429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce0db3415cfbff5ea2044d53c5e88d73ef151c0bdb51a6c502169f6df98d6da. 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/QZNWV2112069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e94e1f1b70badf61f3f1f642ab623e9501ae3d17664aa10820329e0a2770cc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZNWV2112070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed769fa7c565295b5d46e091d5baf4405613a7549b5394f39653099522ed3e1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZNWV2112071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0358972e45f135aabbe3e3936dd0c60b7c2faadc3f8eaf2ca0c7b3faac8454. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZNWV2112072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267b244a57b9aa7dea37c4e6b7c149539aaea433a95b27694f8b5bbca191f042. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWV2112073.
Sparkling Lights (W Ancient Fan Death Studios)
PRIVATE DISTRIBUTION (w Sunset Network 91)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b4365575c508d643b656dbdf713bf679e44ba5b0696f3322e0c676d6ed61e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZK6F2007690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49bf84dd7080d4985393e30b16d1f1659499547951d27fad8036e8af6874089. 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/QZHN42296567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5d6bbc31fec916ae491d5941cdabcc83ba18d40c8055a580f9ce12a9ab95c7. 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/QZTB52319137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41150afb2a7f213d796ce21ad478d5a5f99f346959bd147eb05acac998a778c6. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZTB52319139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b7f6e4389827b34162571c8de10c877266a3a0a89ea4b7d2957d71b19187d. 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/AEA2M2477236.