thumb|400px|Mortality rate of countries, deaths per thousand Mortality rate, or death rate, is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, s
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 0xbb42a471711f55b64aeff7de9e43043722e44c395c322e4c2b9bd1ef6359aaed. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea92df0e-6f58-4eeb-9c7f-de7b5d43f2d3.json and https://artists.proofprofile.net/proofs/artist/ea92df0e-6f58-4eeb-9c7f-de7b5d43f2d3.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 0x968af1696d197005acbde907d9e42d250653b6715a36559b3128c9d632569717. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:20:15Z), 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/TCADC1758972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f3529f0de428c3502598db33fdb762faa7e44e37925e69a78ec91aab63673b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCADC1758974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2157fba953bcb15726322b0640e07f177deecce8096d5bc38a1c7f71b7d9c3e9. 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/TCAEF1916921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f098d4ebdacebcf49e545fc3c0d852a563fb92172507ce37bd7a8cd06c776b3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ2003500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01030bb914fe400d5a79dcedd9dfdc04fa1880880205684df45b7ec1a3954ef9. 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/QM6MZ2003501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6333a079bf3c250985c38a8ae330fefcbe5ef4b69b4a7e99d798fb2ac117c8d. 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/QM6MZ2003502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478a876b189de366270e887fbb5b0ca190a2f10d6862ff97663ee55330b52dc4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:12Z), 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/QM6MZ2003503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc1cbef1f50506e153e15bc062c6024dc3861f8c66676497abddf4b935f33f5. 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/QM6MZ2003504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d691c4f655700c8c8c1134029804c1e03fb006e73c6329a6b6c4b1f019ebe8. 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/QM6MZ2003505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd60e38a4a9b7dba7b38d9697718c70c9e8da41ec2ff20ca727ca83255c8ad. 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/QM6MZ2003506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923ec8dc0430b93759def6aad5b5bb1eac03e94cfd597a7bfbfe83598078af3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM6MZ2003507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd750352e7dd1c77856556435370250e28b9b44755a6588f3ac8d9c6f5bc92af0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ2003508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791a61aa7baede208ef2745e5a4eacf943ae517b84ab1c39e55776200094e88. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM6MZ2003509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a63b9166b00b853065fd7e65dfd0f8fc746ccf59c1cedf0c0c3cedfc55013d. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QM6MZ2003510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaf27b1e2a4c99beea00e4d8f3f71d68513bec5aeb122b023e57c87e7a1819f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEP2215545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e694922dbe4ea8dee6b32b49e7d9f8fa1c7b87975e79b6cccccaf8dcfe754d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZMEP2215546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e694922dbe4ea8dee6b32b49e7d9f8fa1c7b87975e79b6cccccaf8dcfe754d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZMEP2215546.