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 0x432e2d3ea36b9af66b0cbc51470b442a861a10dcdeffa360992c75afcbd729fe. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69aded92-d0ad-413d-853d-fa2e25a8389b.json and https://artists.proofprofile.net/proofs/artist/69aded92-d0ad-413d-853d-fa2e25a8389b.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 0x070a5a46aa7fcc25ece1910572ed392c85d1da4d2b57d75f9d9f50e84579d074. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72409677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26ddb594bc29f3d3a6f815e77dc288ce0e16c51c3ef5153026607d6e8e5348. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72354677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5726fc5c6db890539bb9bd0860cfc77e5b95b084c32be4266e536128d133a7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB72354678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690b006fa5df2c31e0fa7071d2a3c87007aa63fd47306cb42f3fd785354d182. 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/QZMZ92441603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce381d0b7794b8ed4e09bf328a8a4ed231449b262c314e9d079af1a8065fb607. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9L2361433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e32098adb08b193ae8038ffc6d040010ee078d0adfd28e1e5927afacfbba5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9L2361435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91dc3a0aaed8b48263043df339c007f7aeefe4e1bb4051f297ea3055773de4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9L2361437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bad9264f16dcefae462f4b7197fa19e958b8ddc2774ff60bab3809799ec956b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9L2361438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdaf04097edbfdd455d2870cfa1803bafc7e02def2b16fddfd8e9b902a14b85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2361441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8eb1f3eff3a4ad8d09564fb20ef6ad8e8daf00feab3bd158d07823d468d604. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9L2361442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559ee98d6f7f0ee9ac6573eaa68f7385c38737115b7c7ad40ab02cd5b6124c3c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBE2389279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f5623f1626823a6670a57b8ebdc13141ef3c38a3a6b8ad196ad2d02e23fe82. 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/QZTBE2389281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ac894d54d53ee9bfa2143ba5db78348492ce0b687a5d57f2eefac3d2b0029b. 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/QZTB52478829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26ddb594bc29f3d3a6f815e77dc288ce0e16c51c3ef5153026607d6e8e5348. 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/QZTB72354677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5726fc5c6db890539bb9bd0860cfc77e5b95b084c32be4266e536128d133a7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZTB72354678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871b1bc624e395de8928a6c5b47ccc285bb2f62c48ae4c90c54dc0c219a472d8. 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/QZTLA2590190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712ed8ff741fafb46f52ab0d99e0249bafc22bdd98b156394298859930498a6e. 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/QZQAY2520455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaad2b057132249e722bb144fdfa5df3f210c03bdfc16797274644b71128ec0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZQAY2533890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b38e7392612d5e45dfa24698ad85a77ae6142385bc6f282c1bbc0b9340a0f50. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWZ2347221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50b69e4821c0e85b52fad2f04da10c8a46fb981db5efdb1d2d2c7004c9ed79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWZ2347223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cf608521ae8b04c6dd357213eb98fe96ca1413bd175ede006032fd5b558e21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWZ2347224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8272342cb3227ab8973dafc69e0f9e697c32b9b6603fd66dc43f7606c405883b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG2315611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c6eba73f33a06d8603831d9ab339d7faa30ed06935f229060b06d393c3aa10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJY2466732.