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 0xd5febd202b79591c3c86b475b6b9f26531bb37679ffae53fb20b16694a536f49. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/277e80f2-8db2-4784-80a8-5a6148617267.json and https://artists.proofprofile.net/proofs/artist/277e80f2-8db2-4784-80a8-5a6148617267.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 0xbbee4b2201f4e96d940b566a0c7a30d4f79781011de6d579ec54423c9f9f65a2. 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/QZHN52085275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859eeef46b80b53a7bcb37166ee7afb1216200db40ffc1e650544bf64c37beb. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:30:09Z), 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/QZHN52085279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d006c893cd9a6f87a52dfa4c04cb7c80feb91adcd443cf6c851acf6fe65720a. 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/QZES52127388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2e5ad2d2c1d260f441368207bb11ae354e1d62ad6767bb3226d99d735b9e3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZWFF2304272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea5d724423ed477bb02e97fb4b23cb13cb115fb9a3e1266014098ef91452b80. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFF2309706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfe491002db7590239655588f58e15a9c1ca7e1643f031cf1eb598f0d10a7b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZWFH2355048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cab84ba3ebc449d2365ea727766d0b7d65a30a2a220de719c7d4125dbd0ef78. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZFZ42498346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133cd567e2e42dab284f93a253617d08e1d097e05b0b4b4bbd4f3c243e34c7b3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:08Z), 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/GXHAF2577031.