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 0xb8cde2c882b346e52ef9bcc1cd5041770a583ff8e36e471fa1268f0b3152a282. 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/9d169e71-007d-4b33-8bef-07818d366aed.json and https://artists.proofprofile.net/proofs/artist/9d169e71-007d-4b33-8bef-07818d366aed.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 0xcc576e6c8b6d1185a6771b1520f4ced97a8048ce2d68e4da2c7e94138ee19191. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAHC2307960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6797939523ec2515af7f3052e08095acf9d6001011f6343388f59ad30b78c2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:25Z), 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/TCAHC2308066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017712089ae9733cd05b16036f4608a5928f0f1f3f5581b0c307df8e5087df4. 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/TCAHC2308089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94232f58d0d3704429af88a3df212175ab374e77a50d3dee4eafd651929ab202. 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/TCAHC2308094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045eaacbef0761024601103ec2cda65a45c7d833889a1f70faa9889e7b82911. 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/TCAHC2308099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f11f2688f6a9b7fe3dfd5e691db4cb88994bdc0210d51544c647503f676a5d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAHC2308106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff5f974e96c60619f4e9a35eeeafa0fef361ad40e9dd4409e7a363a7ea5b25b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAHC2308109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc31336f8beda3ecf8ff46b7f39cc2e1f1dffa6db8e3dea000aaa518987d119. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAHC2308113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773843036537c6ad7cbc1220d32032a871cab5fc439713de2144d5ddc17193f1. 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/MYBL11400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffb1a9e471143163e921eb41b376930e8ba8e1094f89c35a8d6105e49ea5c0d. 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/MYBL11400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ecfbbbba10eaf48a54d39b19b0dd9693c1ded844dc4e4901781edc333ff297. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MYBL11400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa5b3cc7acf69a4cc08658a049b3a662d1ac512394343f72534a5b1f64422b3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEAR41044661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f1027a2590211ae89dffc94b5e3a7b1b31a8deef1a0bcde59d1069c4b3f4dd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ITBD61400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638e2241f0b6ebc22d09636978e50681e930db35a518a9303897290c14573bc. 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/ITBD61400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca919b0f8986102847821b91dde30a19fdad051911221d52f3b75a513e0cbcf3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAGA2268230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0c04fcfb60dbf7b7abee1443cf4820590c8035bcc7fee04a7d2a42fe27e73. 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/TCAGA2268247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1bf1cd37804e643cc1ee3778e393d8f4f0c82b593a0ff3aa8caffa86795a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGA2268256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbda4494b0c6ebbe2ef203e7f2acd47a7374be886b92dba07751d22a05b19f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ITBD61400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79127daaf6e480b26c1bf22e19e637564d6a210495306a6d256e32f5473caad8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITBD61400897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1356bc9f0a903545b8b8d9f262a4f44aee22c64ed82e51d0d582671526ae840c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:30Z), 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/TCAGA2268731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6b56a7f0a236866ec276009bc88598fd3cc6ee0ea58d665ea7ea5f9053eabe. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAGG2204336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afed5b2b92c9b8566961af877b160aed0594cf97a3cc665bdcdcef5e2daabd9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:26Z), 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/TCAGG2204339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78cfa537be44c9592469d5cd80445b8182dff8ff14ea5250a95ea60f45b9d8e. 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/TCAGG2204341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb29bf85e92fea08636bf11a29b526ab2922523671236ad31628a4f64a2920. 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/TCAGG2204373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a22a1301253c7a217da7342bea644c6acc504ce1d3b2b81f8445c27d89a030. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAGG2204377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02f265ff2d56aae30a4cbb19757507b4f4e7ec01c135beeabe5c0f71f7201df. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:50Z), 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/TCAHK2364239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8df9cede5a52e58af2e112b6d6ff538e65710418c61aada680a73a0176d16c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:53:35Z), 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/TCAIJ2409564.