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 0xa610c0143a57232589717bd4ee46809ea57c3dbdd4e63334b7b210f6add52091. 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/62d25287-971e-4563-ba3e-074abab33127.json and https://artists.proofprofile.net/proofs/artist/62d25287-971e-4563-ba3e-074abab33127.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 0x14b418c199c2a55c981a2b73336eafc8cd9c96ad639782747d4aec6a13dbb908. 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/FR10S1633560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46355c23808722d24c5edf00481ead6e02c32be065ba9097cc19ca16eb16d88. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S1633561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1805907769c6163822da184616367876faa0c59006628b9a16c3179487c276. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S1633566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0bf4a9db6033f8274ceb01fa4ec865e1b8e6e2b895032d4110c5cd6184f770. 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/FR10S1633570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd393ce375316df26bfd8c537f32213c2fbdf44cedb756f25d2f1294d1acdee1a. 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/QZFYW2035377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5145ef63c809af2a29e35512c7e0c627aa83bf5c918a70d7e03d3b67a7ecdb8e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFYW2035378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10c1ae60669fd383984167f0515a402161ca9693eb062b900ff1f44a523b17. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:39Z), 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/QZFYW2035383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb446ee9a7e83db63335114922fc7ed236fe909fb1e6d6d7f3ccfd715628fd6a1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFYW2035386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b5fbc5e7c748ac64bbed8890681da5411330152f5c92c686e37ab1d0be980. 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/QZFYW2035388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e31e4579b850ae7cd764d4099a1e461ff76b9b211eb215d7e3a7b3bf4f89605. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFYW2035389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce089c567a8a3a293a29edcbee8c82d1e2305fe677db28a1c51eee3f0d1e1ad7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:00Z), 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/QZFYW2035384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff075401c8ac3ff7d225e7c4a261181fe10bab34491c66833cbd08a0baab54. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7P2587022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26905007750983d7f079869b24c7b6656c18eb5c83a8cbf63224d625692a4912. 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/QZZ7P2587023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbfeef536e89ffa2b9cbc44a1d342188a20e894adb3333d683b0d0c59779159. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:37:51Z), 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/QZZ7P2587024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50770d6293eb46fac62d4ed74165ec80da3aced5f974e094e6139e0455ec7389. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7P2587025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53281fbaa40b27bf9dca0b11fbf30db6f3679c03e82b1b737221182dfa25619. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZZ7P2587026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d47f7ca73221f0b24020d7c2f675c4968c85852f305b884ba9e2e16cf20fc27. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7P2587027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9962ee73ab423832eaa50727fc674535d5e2ffb8527262b1b64a1ca19fe46582. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZZ7P2587028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6260be68a2f8743a311d5f5c56497ad88717fcdbd815a3baed43ecee858be00c. 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/QZZ7P2587029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63521ae1a55c949cf5d9c1106efa07a39a28b6b165d2e2655cf5e4c2dddd081. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:26Z), 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/QZZ7P2587030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8421b67bca07684b219b4513ed24586b28a277ae7527a61dec876aee32d5fb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:00Z), 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/QZZ7P2587031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37be8f64f4e609469d72071c81773f2008c34d723112d2cc74e399b0a11b2189. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7P2587032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a442e764df36826204660341cee15d816092542732dd03ffa111c75b65773. 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/QZZ7P2587033.