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 0x5ca0e4c3db06c84d79cce420604bdb06e74ece0cd491bb5e6788cfd0c2f2a689. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ffb19b1-daed-4ce8-ac75-1c75c7ff5412.json and https://artists.proofprofile.net/proofs/artist/1ffb19b1-daed-4ce8-ac75-1c75c7ff5412.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Like a Father - Imperial Black Unit Remix
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 0x0c476ef66ae843b82de016cec8fe51a06253489f78d0f01bba52880fc1b58511. 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/US5NR1821701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336700e74d0c2e0843a549449495d0a9171c3137d449e84515b05ad037a783ba. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US5NR1821702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7be6739856c6069edbfdc931078f081c6f25ec485dee9706910896c7ffa244. 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/US5NR1821704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd514e3341a178cc8c9e0307a501274e1f4e9e4942a7412338925bb3a7018588. 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/US5NR1821705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203bdad049e77f767f1d71f2c774f6657ffff4609d1ed6bb2f906d6e823a1b97. 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/US5NR1821706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686b1bc52574336a0b9842e0c32911f1ec827343f78bf9afb67aa365a156b7b. 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/US5NR1821707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c5b4fabda8b2381e0fd189f442f4921c2a685457f67e36dc08a2a175862ef0. 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/US5NR1821708.
Hide in the Dark - Years of Denial Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d88ab4471c9e7e45e33388d81b434805e90771daa7a0513727d8d0503805754. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX5X32100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa35b7b8a9efbbc1d6d54727d9f43eead55ee735a9a44a6c70369b8b4afbf7bd. 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/CH6542010785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb382986d3e0299e106eb208e1b91177ff30138210e9f52fe51c82559de160921. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH6542010783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a30cad372a896de5d2d0f40eb4d42462d3f9fabdd14c64ce42a5a9f03e359c2. 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/CH6542010769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916d590541e6826392c299f6b180512c8e47e2a46d9181ecfad52cb0c6671357. 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/CH6542010768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca0610e14bdd279e8c7f1da46fa9b970988d1e65afc20a63deb0241e9a7d19e. 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/CH6542010767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e74f8abf895c435b3d2a9a95a24f9cb40f521922e371242f528a1050202e63c. 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/CAENV2183597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2268d0fd0b3004082950c30b54d91ffc857f6ab111f1ebded1eefee9f166aaf3. 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/CAENV2183603.
Some Have to Dance… Some Have to Kill… Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aed3af3b7587a52ac6a9c20e9098ba9c52d3f6bcd25a39e3b25be70a893ed7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES71G1857225.