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 0xca6cc3d619fee34b2ff7fab09248e2bd7cdd4077ff8dfa2c8b54eb16af584238. 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/4727e0c6-de06-49fa-85d0-401283b0b549.json and https://artists.proofprofile.net/proofs/artist/4727e0c6-de06-49fa-85d0-401283b0b549.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 0xa4e317595a6405c51b6785aaeeeee82d968cd100ba435d14b1baccb44e78c6d8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAZ2443014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ed0395a6fa3f4b719c318d36289829460fc422f3589d53f2c583fd2bcf9e2. 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/QZWFN2370030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ed0395a6fa3f4b719c318d36289829460fc422f3589d53f2c583fd2bcf9e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFN2370030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ed0395a6fa3f4b719c318d36289829460fc422f3589d53f2c583fd2bcf9e2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFN2370030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6de85e3c8b0b4befdff9bde0b8bbc7ce7e93092386081fe318f33a1c85c077. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA72496520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32ed0395a6fa3f4b719c318d36289829460fc422f3589d53f2c583fd2bcf9e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFN2370030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075da47b688dda669844fe667bf259468f82dfcfb93a33a84ae54fa60fa27ba8. 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/QZDA72496521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1947e2cd0c5ca1f7acde75579ed44685babf16a39521a898c47df6d7dfe420d4. 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/QZDA72496522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17308d524e6b3327c91fd00f230b78ebab8170a9119f53cd29a5315e965ba5b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72496523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c7c1c007bf4b5209aa7b8ab8330574bda7f07b351bc360d029ffb1f2e43414. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72496524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720013985e87adaf42f20d5eca22b88be178e58e502ba115f3682f189c34c6e9. 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/QZDA72496525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaae53eaa3d16feb27cfe72928919aa79bdbc570bd429286ac9b76195e8ebd1f. 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/CH7812227640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500a360e579cbd17d8b49686122cfedb77e5b42b4f94d28cd549860bb87149a8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB42317156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaae53eaa3d16feb27cfe72928919aa79bdbc570bd429286ac9b76195e8ebd1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812227640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac633be6dd3e4bf18fc7e164c4b60941a860b78f083cca4dd6e680644ba93fff. 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/TCAFP2103740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b620154b8b5b28b49e54dfa612db730435e53c7b218b62d29dacfc3d762e06. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFK2186894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67915a2cc5c7876562e0ad350d8608a8728d6dc88564d773753c8f9df9cbce61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812412505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245cc80fbceabf4d428d55be52ae3add8ade512272e0494ce25cb5ed1b13a42. 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/DEZC62331454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaae53eaa3d16feb27cfe72928919aa79bdbc570bd429286ac9b76195e8ebd1f. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CH7812227640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaae53eaa3d16feb27cfe72928919aa79bdbc570bd429286ac9b76195e8ebd1f. 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/CH7812227640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b9612b111d58e4918c862687baa475105ef92829898c616b90aa78e0fc27d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812236989.