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 0xd8be09530c99a857c08f9c0e2c28344bd54f82b0006ba5912168d9c4819e7b63. 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/b7760d6d-be54-44e2-b0d2-435d2e9370e7.json and https://artists.proofprofile.net/proofs/artist/b7760d6d-be54-44e2-b0d2-435d2e9370e7.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 0x0609dd63aca6f28a81febc94e91a80e3c5e75931177dd94c8d383433261f32d3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWCC32322579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b77e263d5a9a3ec3c13dabf195d58971960867b80dcd50111e50ef043cfea. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TWCC32321389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677c63c190c89f6f009de41fd49c2491010b19318b37079f86dbff07c8f62b31. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TWCC32321390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47ec5002902c65161b67098ee34da6ac9d9591d9521046acbb3384ddb86ecd4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TWCC32321393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c357b3c01c0ef54cba2736f24a4b432dfafaf517994eb5e9bcf6b0f1c5a0925. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TWCC32321395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8c28d2b1c9b788ed8d60778b3b88bdba991222e7931fa65cb46fe57ebf36de. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:35Z), 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/TWCC32414641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b978d5f764960fd49ef28b0c827baad9c19d0faed4faeadd44985a8d30fe35. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:53Z), 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/TWCC32414640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf4f46113551c69fd4f46240ab36f34d84c3c6e59d4e14964d2fb66001043a9. 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/TWCC32421672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b7ce8bbfb9e24b6a56ba757dac750052531d61ec5c4b4f2f378bcd904968f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TWCC32421673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57878a48ee491a5bc38dbb54abc2e214ade0979bf1b30995b8d045fbea22ace6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWCC32421674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bffcab12ca8e06bdd2572a95080b14424ce98a1c743ead86d140c37c38750a. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TWCC32421675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9d085f7f2d559a0bbfe05267b2600fdb82f68e4f96bc691a3c9fccf3904634. 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/CBEYJ2495771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a10e6b63ece93249f3c74e3efa18d5f0846210dfcfbc221506b7859e5b6862. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TWCC32421375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ed690698c388770093e0a8d63968415cb295e5285748605d3901229b85a466. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TWCC32500603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afaa458a59db916bb25adf9beff8db28d0d7ae34f7c654d8698d4b158af6de4. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/CAHQJ2591128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bc73be569079621f3a5d20d1b0c21c38a8410f1bdd489b22e899f2c865719a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:35Z), 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/CALVP2517977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206ac13bc555e13fc7475dc1f2ac3f931d995af4c2d993bae1c03ae7394ce31. 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/TWCC32510473.