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 0x0e2bc01ce58d31accc98bcbbf7e9f12e5fca967e3620b110361990a13b5e783b. 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/8c69d894-bea1-4f93-903c-5866364158ac.json and https://artists.proofprofile.net/proofs/artist/8c69d894-bea1-4f93-903c-5866364158ac.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 0x926b6d93fc045c3133108df0d8407957285d18d6ed1570f84ea170d68473d9e7. 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/FRX282172002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a7c41f3a90fcfd1938b0f95a6f4c0ae7f99cb2e3416f9bf48af3f264387c7. 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/FRX762105683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53642aff3cfa75f0c37c89fc4485cce28eb8b3f6a5831993837134c8294cc3f9. 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/FRX762105684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a4a37f4d5d385d035a6bbd98aa63acbe175419fb920823faf86f39e01945f4. 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/FRX762105685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0737adac4b1bbeb8cc5b01e06c0d9d8e76d756e311078a861b5f76d61005f021. 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/FRX762105686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed963c368c1ea8e7d827450c716874a2a4c7589cdbf84b64c52c93dcdae706. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX762105687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a497b43b9f5fdcff2fe904ab77b0899d3cc868f57d8e69a861a4f5735ced8d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX762105688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabf9a7824881b1c202d3dfc128244207e9f5d04f710d22c906e8a063fdd8d32. 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/FRX452183894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b89f0947157dace29aef83eb37869c93a6e8659be8e7a56a682e6e618d56d4. 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/FRX762105689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205c43c96117cc7a3e527c29c9b882893904c78e70805f6a92d7577e9cabbbe4. 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/FRX762105690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce1b33d4ca3b9919180681d465a2db28acfc688c2769d6c94cf856f63b9e34. 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/FRX762105691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73cf4734aad6f61674d2fe7198ccfb1f9bcfd8ef67a399b29fd2487c812e69d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRKQ2500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444cebd1e98678ca7fa9996d0fd80bf022b467611d31392f69c5db25f365799e. 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/DGA0P2356805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ffb9d004e64b3f14ffc0959117472a05c13d5d9ad8a79d31d3c571d4f64b3d. 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/FR10S2215950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabf9a7824881b1c202d3dfc128244207e9f5d04f710d22c906e8a063fdd8d32. 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/FRX452183894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926b6d93fc045c3133108df0d8407957285d18d6ed1570f84ea170d68473d9e7. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FRX282172002.