1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xce61da5f6937884258f2048d4870e0378e114bc616015495de58650e8db22cd0. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44c2f7a7-5c87-4788-b893-5c772853b4b4.json and https://artists.proofprofile.net/proofs/artist/44c2f7a7-5c87-4788-b893-5c772853b4b4.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 → block OTSBitcoinBlock must exist at that height 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 0x6095a748e13da1a9b7987a0b1f511d9b56d2408559a95f93c2d4c863ec8a00d5. 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/JPW462322138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33eedacaa077e5e6056b93013188946833c433a203eb9082befd2f29febafd10. 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/QZMHM2221604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b2d7fa165d36c8daa34bb9a303223a62e37f2f76da44b31f1786bfcc17bd16. 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/QZS632212455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb9b5e2a8254438ef5e1a32cad706596279025d2300083eacb4a0c2c9ada28. 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/QZS632216369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d9af02dc17020d9a507a8eafe276f17ae9d8b32d499c481dff8f836e6e961b. 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/QZS632225842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a762c717a74a7572ddb7e5c68199b37f0945ed32e2d9e64cd3252ab1321f6c. 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/QZMHN2211264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa239d42d595bbcc0fd4dbcd5fd7720e7e7a02386b60f339d613ab72405bf9a. 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/QZMHK2247999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22222294ade8e024932a0f3470f024ca597bbefa1d04cca61f5cb2d5e66bdbac. 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/QZMHL2265705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98a42fd6b8bba6620935f08b22ff07ccdf3db02a34adbdff74831fe6d5ef910. 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/QZMHK2285471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c83e20d42e78df6d0e0e2269b90c134a1ff9d64ddc218a67b44bbb81baed1. 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/TCJPO2158441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49572f2dc108b849688cebfc900dad274204ffcdbfbecb4f9b1eb9e29fbca105. 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/TCJPO2158464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2259324cf3b717cfda66df5a42991d90ba4eb885a5c970fee3fb59466af828. 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/JPW462424811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eac8635f0eba0d6cc256912b8a4cfe5529a92f4dc9f411e43aa07a32b27fd8. 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/JPW462400304.