Hanna may refer to: People Hanna (Arabic name), a family and a male given name of Christian Arab origin Hanna (surname), a family name of Irish origin Places United States Hanna City, Illinois, a
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55847b41fe3d56b67319658cc4f9d7c78e055c9093ea94f38bea8320600761. 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/dfa16bd9-c452-4b22-ba04-243d359c0906.json and https://artists.proofprofile.net/proofs/artist/dfa16bd9-c452-4b22-ba04-243d359c0906.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4053810868e26f0d7ac2b5fce0fc16d925c04e44feded71ecc75262fccbb09. 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/ES5700700995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e01b8f29e23fe7db8c6e59e238e81fbc657025677131f034ba8689ecdda023. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5700700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7743d45527fea1fb4b2cddec4eb0895a8642bfe2a748404330c8fb7caba3f7a9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES5700700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389a49d91c9985b4f1e14a11eb3c44a65bf9aa80d04082b12e8749a193518013. 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/ES5700700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58784486cfafce6e63d096ed6ed9d825b1e4b450fe2dc2faf626e8142c6b38e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/ES5700700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90523ecdb2670c17e48295f2a6eac61e441b5d21650537ae3d71d73a8d13cc1. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ES5700702985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673ea903f1aad721af7fc567cdec43ef64ec62f1b2b5571f727a74d0497088b6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ES5700700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594d77bd5f0188b52b479cad3b9acd2a25d45f426fcb0bad725a9ee4d18b81a4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5700700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d5d899bc962fd216273051d8dc6df5ce6ec926b50280ed4988dcadae5d1181. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5700700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389a49d91c9985b4f1e14a11eb3c44a65bf9aa80d04082b12e8749a193518013. 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/ES5700700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58784486cfafce6e63d096ed6ed9d825b1e4b450fe2dc2faf626e8142c6b38e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ES5700700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca55b325aaae32458d930342eda3c22a826fd8a55c443db22dc8f6f1535680b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES5700700287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8863c5d1ec49a3285180403b0f166df95288d4cd94b28214752c77a0ab7b6de5. 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/ES5700700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db00c183d145f2e7ecfdbfb24fd335adcbd00245b23c498e6ac09ec115770a6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QMFMG2333071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90523ecdb2670c17e48295f2a6eac61e441b5d21650537ae3d71d73a8d13cc1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES5700702985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb034e352f849cc841e950c299bbf8be10881ad78cde69e12d00f4f417fc05. 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/ES5700803790.