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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6da44b4fc58c749071150e6a82ffe6258e14ef32887a75a5f68912afe95251. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49599181-553d-4746-a453-c7357a2120ff.json and https://artists.proofprofile.net/proofs/artist/49599181-553d-4746-a453-c7357a2120ff.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf331e6a7dd50445cd2fe77a9ad63655cdb83ab7080e6df28ee8a28e192116c63. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRU702000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e41a5b77d085fc3b304e52aae6c730e8c281348598ccd19e22905e571b6f52. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/NLSB72100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e383b68290585b6bfa3b9adbbd8b90ec1d1b35d881e0c5517c952f78243666. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/FRU702100269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1029d108fcca3e1bef9db45251b82b9bc5a70bae69e63e22ebb7e4a5b8e1b0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSB72300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff59dc56f9f05ea7122f8d95fe8912aab763a7b0484bb0138f40b3228e6ff0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSB72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabebcbae48fba1d2407248a5aa229a3034c7d49f03caef09c9c670ab96909496. 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/NLSB72300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb545aa3879df62b0726114e439b8261f2339ea7746f4a434b03e1250a0effe21. 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/NLSB72300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32871a234d31e4d5d34517bea565979504561b8c9797c06ec3352f3e32b5f8db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSB72201693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4dfd0980d9ba57518f5fb2a3c2aa6bf7ba4e755ecae8c7d25a101ddd1deedf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSB72300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299eef9cff125c4090b113b8a29f19351f70bfc53f2b6601472841dbd0f164a7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLSB72300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6769aca041d88db519a82d314594f4f4101870c614cb5ecd6b5ec453fc09069e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMDA62311932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd2feafa0af69e20d725a5741909329fbb4d3fdf9affbb8551b4b33e11de4cc. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/NLSB72400236.
You Can And Will pt. 2 - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde05967b1c76fe00271c9412e4065dfb491182ff7f3d5553b6223a03b0046706. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLSB72400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90ba213b7f776e8bba51f1f7775b10fed1fd7f896ca9e24fc1706323c73985c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US38Y2500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e457df83a00d5f21974f93d4b81eda28d7de7b6eb8797e45bcc779f5b46b238. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US38Y2536734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e457df83a00d5f21974f93d4b81eda28d7de7b6eb8797e45bcc779f5b46b238. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/US38Y2536734.