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 0x93a04df4dbe25b3094c32330798dd2be1547cf7d424b6c81a187db5ae1e3b983. 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/86be9f4e-779b-4a85-8a98-174ce1f14ba8.json and https://artists.proofprofile.net/proofs/artist/86be9f4e-779b-4a85-8a98-174ce1f14ba8.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 0xcded9d1248d47fc24949299e66192dd4ebc02ad1f014c095af285ae3437847c6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWS2536602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5366e26ba29aeb94aab756df178bbe1ba5a773b1f4c473eddf475d2a089e6992. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWS2536603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891e64d04d8056005022419bf4fcdc2be05de5671e4871c3bb485554fa4f83fc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:52Z), 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/QZNWS2536604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394c5324f379f358a4f08c6f54524e38b1942bac9ed79e3be826e584dd1a046d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZNWS2536605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c4c9f527ba54197e72936e4d11ab64cc03f98df85531e6a6987db64851c20. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWS2536606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727c769981cdc49448e17dfe1b0963e265c6063cdad7380b555be5e5247e2b24. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:35:08Z), 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/QZNWS2536607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e585b7dce98bbd14f82d6f4801b970b072262274eaeed2a6f22c427dd6f0774. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWS2536608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768b1968ef1ba24f5d4dcdee3ba3023941a41ef531c6b44f460c0c70e2e24de6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:05Z), 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/QZNWS2536609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ec3c00fd99ea3807c17a8319d65fcf6c89ab162db6f0c4b28056bba7cccd98. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWS2536610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f644ae32b00eb62ef50f3cc3e00b4a167f170f9c0b5b228ed875940d7cf9d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:56Z), 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/QZNWS2536611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6252ea10406c597bd3d11440c90b4751d4b049177d0a269441f16cb1ac2c2d5b. 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/QZNWS2536612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975bfff37fb785038902840f40d66b38ddba23b8eab4b222970cea1b33b75945. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWS2536613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8118af2b1d9d97a0b21108e386d7be7da8bfe9258e4c5df7be9a8759216e05. 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/QZNWS2536614.