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 0x0065deebe4efef4f7eecd4c88134db9ce59d74a08cfae87d4365bd05ff7ecd50. 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/c09f9038-ebb1-4881-8566-165affbc181f.json and https://artists.proofprofile.net/proofs/artist/c09f9038-ebb1-4881-8566-165affbc181f.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 0x94541e81798beb3b9370c175f0be6718792657ca9f77fd3c195efb7f5b9d2462. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZAA010700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d90d369ff77c2a7ab9647082a4cb9f89fe18e5f9f6bd28fbc33494a645459d. 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/ZAA010700487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f134a9c3d40ba6d1d0aeb2078606195e0495c80c5019b7027202e831f7a1a6. 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/ZAA010700490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91c77f2eb15bfccac04237f905713e250c7dbc375fe279343b6b867cbf93e14. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZAA010900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07f1c9cf1ca9470aa9fc754c1abb6983677102b3572d90eaf3b3562c33f9ce. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ZAA011100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8d080e9812b4c3507557e0b766c02013879f3fefc52f6f82beb02e623e791f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/ZAA011100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f25bfaa328341cf7b2b21ef5259c54dafa75a6c5b28d1bba41404dede1fac4. 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/ZAA010900561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d13e212cc093968829d2ce49f6134c00c2252654eb25c119be436abe95d5c. 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/ZAA011300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7808c4852547946c3c1be115f70b426f15abddb9f3451d142e58dbae2f9512. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ZAA011300362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864c8cc537d11a0327c9f01c46ebef8fbcbd26446b8673c3b8771e290dba941. 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/ZAA011300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e209bab7be4a4af88cc17297e9e54af11868d03dff6dfecbfd172382038c638. 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/ZAA011300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3351ec483ace2e38558efbd1831969e21941aa0cbe7585df9dbaaabf1f2a2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ZAA011300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2889b17cf3e0032f8815277cb470278ef0606cb2221d2a905be8d077fb9dd5af. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:45Z), 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/ZAA011300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2c9aadf21c775ccb2e02e875b6f5351a8beb984a8bf3c2ffdc3be27eb0133e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:20Z), 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/ZAA011300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ae14b417341dff25b70e175834612d295fd706f40ead5303bb1d78694481d4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAA011300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5b66af15f80ae6154582b2d47c01d79eaa8668fecf5d94acd3f877f14521b. 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/ZAA011300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece740d42772c00595b37b6a59ed3ca5ee0c1ec00f3a1870de7bade8672dd4bf. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ZAA011300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e1e2f3e89a1f55e89b718c6fe22b6841096d327d9b572b15cb4a30a5f4be04. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ZAA011500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455ed7c5c0f74df319fe0c9142f12bcd7a16b260f9923dfb832cb036fb1ef1a9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ZAA011500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4de7e32939120f6e100ad56adeaa8e686bda3ce853fb1c08d02c239c651cfa. 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/ZAA011500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1788aa285ae9a466cd649f5ec39c8dabe34777461c3c505d248c444b79049a4. 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/ZAA012000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3c8b932b57be483d4fbb0eafb238069ef95dd20a372dabf7f4d9a7044dd24c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ZAA012000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b0ce02adc1128c0bf69da1221686a7b4785ed949f1ac5289f5f3914471e29. 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/ZAA012000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22373dbe268bfb3e3dbd3218ee1738c81892b536984bf28c48820cd9f565353b. 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/ZAA012000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2df11e9c30507b11b4620e3ce669f573a1bfedc1d0158846aac195f135a3ce. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ZA34K2100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05b242e050c1331889ce43b49d5e309307fe2748c8d25a82391e7d778a7980c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:11Z), 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/ZAQR42204803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd9ab2f7517548053c853c2244d044c71aceb61ec5388196f2060eee54e5d1b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:05Z), 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/ZAQR42300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c510ed16ea229fe7393e497a856d498653254736f9c13619c36a80a46b6e3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ZAQR42300961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b563b802ea9b08ed7ea6d324d12b8adc91a390b25378d8c7c35d0d99a5cb2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAA011300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b563b802ea9b08ed7ea6d324d12b8adc91a390b25378d8c7c35d0d99a5cb2. 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/ZAA011300435.