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 0x82b29f59a0f68a8c95855e2875d4b9d7a10053b0059c23a790a7ff3e492c526a. 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/e21803ec-4f1a-4b71-a2da-607a5eea757a.json and https://artists.proofprofile.net/proofs/artist/e21803ec-4f1a-4b71-a2da-607a5eea757a.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 0xa0b1858100afbf059bf083e18d8833efa9d0cfedd3eb5d496557cb5debdba3e9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:27Z), 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/IDB772110070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53cacd2fe70e6a85b1c6c3b8ff42f90a8c4086f05801bb0c58833902316d5b0. 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/IDB772110356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183eb5e452a76df5e91626c0b2d391d5b7eca996e881d523d4068ddce7f0ca62. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:28Z), 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/IDB772112043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79a984daa31eb1d89a788a5d143bda91cc23c1410760abd22ac62033426bab7. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:32Z), 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/AEA3A2541584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb2b4105f712bb35f554862d3a8fd5a1cb5bd57c085d45dc40be3e9e52b1da8. 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/SGW502543411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef8c619e550af930fd5ac4fb4421933444f5484d88c09999a4955692d9be234. 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/AEA3A2508521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0416896d40ee752acde4356162480f822e0193473ff3369585bee713a14512. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:18Z), 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/AEA3A2571772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046d05f508c23dd3b1ecbed531566a636c69d0db786fd10a76e560a9dc27d96. 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/AEA3A2502908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42aa52c6ad8b19e0aa6054dba8bdd95329c3d0e25dbdef14b9b1716f9d05fb7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA3A2568840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030682762e027001e60fbc7a06e99fe0da729aa6a32ce1fbcef1207159fb25db. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:00Z), 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/SGW502537140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a88f9e4edeef2dd822de5706f6ee60baadee734b1f2ad0e830384d7731393ec. 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/AEA3A2506560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f215fa514c2b0b1b87e7a65bad1c8915d38f6487c33ae83f9de475664b8bc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA3A2571903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eebb34beeeb7fc8e7132e9e64b2a7fa6a355e4cb4564a9b992cdc1d1d40dd22. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA3A2536225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa388de56d29a2c0e138cc7e838b08e8f0af0e600f774c2d30f320028baf3f723. 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/IDB772112784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a2cdf4ffdeae15311fb3c20aca5260e9a7e9a56027cf8bfa621b9d03b9b338. 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/AEA3A2159736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa133f94690451b089e94e4068fef3f6854e02ec4067554442086e1505282fd39. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/AEA3A2196420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d5033a1f2497a473b83a41b5f4c2d5dbe46b8b81e9580c0ac0cf5ae3bef9c1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GXBAV2192833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d09fd4b627926611ee4073e376bb06bc70e16d6db465928d0d9b472a20cd4. 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/GXBAV2111373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d00a4b597a47d8a8b287dd9b6093674d095cf262ffd9a6baa92dfcf4d554b8. 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/GXBAV2039231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd87b31703bfb729905d0165e7668157e23a4f122e0e84d68357040278d36a03. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M22553097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec1c5dbb684f2e20b87bf5e4673303e737acc742d3e295c406ef09f3ccf132. 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/DGA052501383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87836f46247672d40450bec4474dc5cc708ae880d4cc8ccd0a3e1c5f27c3ff7. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/IDB772115974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5dde1780123a8956f74478fcc594576d664ae6915b9a0d3509e2b7cea47c6b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IDB772116136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e633ae95879e965aeb79fb513baa49f9e4ab9d17c79072880c020354f6eb53. 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/IDB772116167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95289fbcbe68d94a1c6c0f1a395d92aaba40e01ddc67ead0326933cbf309ac3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DGA062535062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869c12876b35580b4c66de80c0ac76a133208c71d0f0951abde131edfedb24b7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DGA062535068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a6cd5911c51470b6d53a34104344b48ecb61fe268d740455b6515b1528d5cf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IDR012512043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd128a7e352d4ce42b0f9d4b4017d6cc40ceb03e509d496fca2de8228f410ea. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DGA072513772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc4b45d4e8a8183024a39138686b33170607bc65ad76e590fc0bb70d0e07508. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:34Z), 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/DGA072521891.