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 0x496c4309ec1db513e3158db41a5e3b0feefc81d1a45e14f343d18174725cdf1d. 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/90fa3bb2-2345-4cd0-97cc-4f9f2140fd63.json and https://artists.proofprofile.net/proofs/artist/90fa3bb2-2345-4cd0-97cc-4f9f2140fd63.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 0x63f0925ddbace2f835a48c40761e7f0f39c6bf5ed2d5465c7b914ec65fb784c5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZTB72215030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9e7baa390739c0c88df00e04844cecad81e16fe2c4ce20c83b9e624414afc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTB72215033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89487a934eb2550e3cf302c74757f1d715c0e1f0f515ec40d7eee7c3e854ace8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:58:13Z), 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/QZTB72215034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aeabc5058e9af50aff8c32306911690446a729c0c4080d36caee9be385097c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6N2306015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662db42c959026c62bb5375e1202fb919d7cddcfef2abd05a256948a2795b264. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZK6N2306017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb987915ae7fe9ec5b7e4e36ac105bb6fe3d802077cd70fe2f4997ce7e5a75138. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNWU2377439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7a2d0a228ce75a7a40a93465c8af84230c4f15547b8a4f736a1eba0c88fedf. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZWFJ2313055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92e966ebb8781caf66f1c8f48ade9e2ba7c222e1251eef9724c068fcef3a2b1. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZHN92498062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e283c034d9ac2f358a62d3e3c8a67f4b44ea3076a3c5ebce81790907dc3fe3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ22548382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93dbaa46354bdfd2d6bb72e980743f1c62025634c42334f4e7efa642367a8e1. 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/QZDA72512387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f11a13717b6b662286013858453da42ce10977ed9e96733f990f59b53688563. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62551629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93dbaa46354bdfd2d6bb72e980743f1c62025634c42334f4e7efa642367a8e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA72512387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50272e610a932806c0e7ba67f5a6c8c32e4eb81ae1bf5ffb022d7605b5dca150. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN62551630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efa9bb73be175610c21eb513229d677ac744bfc0c81837455e23ced788ec543. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62551631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e283c034d9ac2f358a62d3e3c8a67f4b44ea3076a3c5ebce81790907dc3fe3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22548382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715f2db02cf96ccb0a984b996a87af15dcdd35ca4c91cf44bde141b6de60b36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62551632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2919fb0bc862ee53bd7a5c52c39153f9ebf74204ab8cdc5b9dce3a3ec0e68de3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62551633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e814607f45d9b2b210580836860c16b5662dc090ea7316b6add98206e1045. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62551634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1cff3ea46be8cb015c1d471ae9f49e64db09d9d513cdd6da3d083aee205d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN62551635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239150a8774d383f3e7b20f2917b7c7ea60a2c3555b41e1e59ff9202e1a47a1. 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/QZHN62551636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4819d405337f35304bea62307a2ae42a808375610887bc3064a86c0f1956bdbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN62551637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bd951036e8d50a22f3700bd5b463a2240a4863a11f90a74066c690b5bf1c54. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN62551638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ff263b827a980537b943d2ab53b892ffe1390d8a116f2c20f9edf0c376715a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES92252544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d8fe7de04bdc45b230b5c978f0d8ec8006d68c7a028a30b8d1d2af5128d4d9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAIF2450129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69241d54b1e7673a5c2cd00ada4642143bdc1f3fff1dcb4915d290702b55f493. 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/QZDA52441257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51faa8538feb0e30d1f7cb426939914c3375ae81a649586310f89828aafa9e95. 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/DGA052215254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c994585d77f0bfb585554f566bf3ef8a0b6e5ef0e5577aa5a51c37e5b84dec. 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/FRX762498374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368c060cd04455ad3cae516fe09b0a0670bd31ce171a0c3e5ed4cea6ee9a02fd. 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/FRX762498379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a06ec12ead70b8aff42627a5ac7c3a89cce08c763f7d469e66da41adc310d. 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/USCGH2490948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c46ffd007f05aad27ab2e965f67bcb48c6a3055aac7c34b3c6816934b007b56. 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/USCGH2490950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f316bbfcb0b28921b539f3f5273b658e683b63735807a90b451707172f3f84. 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/USCGH2490962.