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 0xebd19a5dc69229473a8e15925984123fc53467e638f3f3a6133706285bdb347c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78649611-76bf-4208-a5a3-e19891edde6a.json and https://artists.proofprofile.net/proofs/artist/78649611-76bf-4208-a5a3-e19891edde6a.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 0x7caf98413be5c6ec762857cfea0f6d00b5373db2bd75e2d38b845de74d1238c2. 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/QZDA62407563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f055e773dc1adb988fa87121deb95bd7150f4f9910d00df1040873e40c9252. 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/QZTBB2354641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80f97bb851042705568a0c5e7562e350af639fc0816bc06566033218c22e4ca. 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/QZMER2417433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f055e773dc1adb988fa87121deb95bd7150f4f9910d00df1040873e40c9252. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTBB2354641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba24ef42b1fc5f4a9199ae80efa138375e593c5077e18308adb3b9e9ff09ce14. 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/QZMER2417434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9164eae7fcd427a7a0dc0b49a215925e6f81f3e33632a30e1a1ff8f51ed044. 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/QZMER2417435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19cc7b7bcc82e0906d8de00e1e2274656db18f2b5051a1bc3046a5168bf3b4d. 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/QZMER2417436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf98413be5c6ec762857cfea0f6d00b5373db2bd75e2d38b845de74d1238c2. 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/QZDA62407563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6533722c3f2f7d8b22c17fde9edb1ec940f683a5a4f0847d373e2ff86489b434. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZMER2417438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871343dd316bd17dfce18d8596d2db9ce2e43fecb6d204f542880d17e80d9b7b. 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/QZTBB2422617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd10c066639e728f7cb9ab1539228102a6f1b6b9921036a327a7711abbb6a5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7T2467912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a58e86042bfd4c30ad6183bb766d3b9c14c3a4c336976f4428ed7d12b0718b1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN52529484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd10c066639e728f7cb9ab1539228102a6f1b6b9921036a327a7711abbb6a5c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZZ7T2467912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024aa7a4aecb8904619c76d72934bb12c8606ae137f06324b4ab48bea11cd32e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN52529486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106d83667e9026cc28124acaba2791f031082581ab179a0f1be3148d84c13d1b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFP2498683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871343dd316bd17dfce18d8596d2db9ce2e43fecb6d204f542880d17e80d9b7b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTBB2422617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d5864ad1bba23431273b30c8e7c593be170229e22ee63f816d1cf80d49232f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN52529487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503281776453981857deabfd1bdfba997d5d8e41f314078e8652ef55fcaa5de4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWV2561432.