1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8d1f911aea84bc1f1920b39e0d6f164d745c35c7b5477bf3faa391ea584bd4ae. 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/d4b384ba-4c44-495d-beb5-ea1129b5cfb7.json and https://artists.proofprofile.net/proofs/artist/d4b384ba-4c44-495d-beb5-ea1129b5cfb7.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 → block OTSBitcoinBlock must exist at that height 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 0x65d7484901dd3b2d36a160857e1a49caa67997ddfa53c00445b9513b4aa33f10. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:24:35Z), 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/QZT852104318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10262170e063445bc6309ad16ef88b57356f6088fd4c619762c43bac10565b24. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZS642269589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbf7342ed0125ddd6c37973a10731d87486ceae926d47a02544830f29f9daa. 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/QZS672226204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9d6e4001822183935d60faa8d0a579ab7cbe4e49137b3b310cb039e1c9b97. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHN2281294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5e0f2379f225baa7ac7611ed88bc78bead35847c0b3f67d9e77df4fa987c0a. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/QZMHN2281758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d20033a83c91fc9ad70f0b8f3029f963f50346798ca321b2033f4c88aa21189. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:46:39Z), 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/QZMHL2318442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412935c3698ab40d33b2117e477e1da04e43d7368c9fa33cb343426c36026b37. 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/SE6SA2396162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f5590bd756b3be29d108b8a39cd9c25fd497e39973e01e24cb2eb566a98370. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6TI2367083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c44528b0ed7ae2dafcc3bc356a6c5a85d3bf28961d9ea6b496854d3f85f6e0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:13Z), 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/SE6SA2325079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600d54193c8b8b74413ad43199d44cfd45b102bdcfd657d0ca459aacf58c1ef. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6XY2384563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e73c95fa72df43f9433d214eeb5d02046bb07fd1702a3c1c6620865bca93588. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE6XX2366676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c434a3fd2cde37a612780a1a04417e47235413fb214b821f1365089fcae07b. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DGA0Q2366782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b72c0cc503c097ed088aaff8f332d8af42f3d5f262367b6b013e6e210fc8b4. 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/SE5BU2415176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8438d8b650c4f4df3661102cc19597aedc76616a6ea1046a5d6dd82afb09685b. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/SE5BU2415177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b2da56459ae9d6a30398e616e8f79ba3a499b48c4bf03838a18b3232161b7b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE6XW2417448.