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 0xaa0399b78df43807401e5431f38a723dce382c09732b465be8dfce9cebe3de40. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc6adf7c-a129-49cc-9042-0b009c8cc989.json and https://artists.proofprofile.net/proofs/artist/fc6adf7c-a129-49cc-9042-0b009c8cc989.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 0xac645bd4652e2857a7feb20b4771424c162e2cd305d72d6a4e38cb41fe4c10f4. 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/CA5KR2296415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671020b03e247a5f9f0d880670ad0a436a421b9136a7e2830c5c9e15614b6589. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2296412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e47c5499e5ffa0d59654f9b812405b3eb4c21bfc76d321b213a0e1565a7c68. 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/CA5KR2296405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66fbd710c6845405feddd68d52d4356a14aa1b3b02687aefce2aa940d6c916f. 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/CA5KR2296413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857cc8333965589e6ba155e452b84868e97de31c9ae49e1391dab5e2d8fef8a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2297449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc3c657e9f22bbb612b99b36a8000c27fc486522ccecd16bce9ed22bdfcb7fa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA5KR2298238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e83eb7ce15bae70437cdba3ca3d4f991f622a37d484878a0343df383d7cab4. 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/GB8KE2211002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d54396e9174e835f01cd434208647ce6030b8fde63f2911aabb4dbafdd78e8. 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/GBFG92400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f564e9726dad0d5b0483600b56d42e5b11dcac4af2ab16ae13ed27b704add76. 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/GBFG91600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817335c04896fa0be6fbbe5ca7a372c751fa088a7feeb71cffcb4075ecb2b983. 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/GB8KE2212405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d82b2a6108d0fe3efb0d376a3e0be904b31c3e3da7430e6272cd477edf0730. 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/GBFG92400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617c5a0ba5b290af220aadb10f7be8245b8935eda1a398983bd528db9ccca73. 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/GBFG91700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d96f28faa9bf5fee9cb44e46b9203c7d97445ab39c4b5c9381716cdc8ea759. 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/GBFG91512452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d766dac0379bc75bf47cb865649770ffb4f41e2fa7dd5d09796f0204b7cbcfd. 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/GBFG91512657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e5ec73cb7f082969dec18bf36afaf6c5bd6c6e0dd021680cbcee1a39eb9284. 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/GBFG92000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eed730ceeb52c19ef60cc8d7596afb28482156bbf39036325da2c74d450abc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBFG92000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f3fcfb0b8e1e9969901e5d0360b1a980173d46b0b30efdd38739adac7a1e9. 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/GBFG91900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56718a001471dba870a0c6d3c6e33837a0f3869776e29c73ab9d023cafb961f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92100367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e248b1a4b2adca0d23216fb7a51547289a6e1c364d8658be38a4d91c93c1934. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBFG92400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05722c007a079ec007d5526d3efcf2429f7cda8441c9ac1a758196bd39692f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFG92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a6277e0ea3afa8fb5ca96d6fb63aa082f616db68a8eb9b6d3571c4df9e7fc. 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/GBFG92400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e87796d1039e558be951b8a6d3c9e2acab227941adc899b15dff2c3ba54b41. 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/UK9AA2307401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb05cbe8d5939b899d9002931c1967e556928449876387ed1cc886e352c0e76. 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/UK9AA2307402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec40856524efe245f70a24e00e43e4f96bb235271086bf09b4a1d317af28f5d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBRF52300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3e5d1bd9f8658e0be8c50f6982b316a09c1dfb5c1a4af17939be384e9477ef. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBRF52300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4a82a4b63f8a5b236ea82d1fe5f391ea4997cd88ab0d65142e584cf0a69ecc. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBRF52300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875ee35c22adf840660459056f7dc9de8d58c53b028703c90e733a1d46a7cafc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBRF52300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64800a91add24755d64abb3e7be6a5ba3c81625ee37f1c63e9d9ec3b9280d31. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBRF52300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf555abb6586bacd6f4dcd3616a4eaba94a6165f0d1d818645bb2863e11ff57. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX452231957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6381bfadef38f8a16d30a7910aa5790a56e498d81ca120fdccfcedf453aee61. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRS182104142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad31a7cdf474d1a9cdbf15e43ed256e90c98d1acfc42b420da25da474e21984. 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/FRS182104143.