Edward Cross may refer to: Edward Cross (politician) (1798–1887), judge, attorney general, and politician in Arkansas who served as a member of the United States House of Representatives from the stat
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 0x82c15fb754aeeb42b126b0f2ce12dc2733faecd0c56f99e1542f88186143982b. 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/1fce36da-afa3-408a-9853-483de99ccdfc.json and https://artists.proofprofile.net/proofs/artist/1fce36da-afa3-408a-9853-483de99ccdfc.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 0xae04b2f49372ed41f2a4cce71818240028dcbd9863074105aaed56d587be71aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72379682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbbc7800250d8941e3ae3d6aa75f43aef5cbc8a4530d5cf61729e82fa053b20. 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/QMDA72379692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c6fb5672ad0e2018f62a71f25709e399725868a081bf006982e48af8ca888e. 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/QMDA72379904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42d92c80d230f9742d5c90e0d53ab6da048f045ca94e1fa69ed0b26e820504. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA72379959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90765745933fe0821874cffa507adb81ed9d98c4d15358127cfd520a3b6dd850. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA72379961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecdb54d7cd4f80e8127ffc86489cc13b2fa493e6b76b737db7d0c88630d5feb. 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/QMDA72379964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f903d9c5717f477e99588e34b998b85e257fae1cecaeddd7a2754d985dae231. 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/QMDA72379958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb168690d5290f2bfb7cdd0c222ba8732091e111cedaed099802aec4a6125fa35. 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/QMFME2486693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644dd0a5ede430e29ecce5e07c48bdf2ad5bff372cef49fd736746eedb91ea11. 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/QMFME2435341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caa9bd1e45ecc92be404e975b7ac61d753723a0b36a9c548707b6e50d15a34f. 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/QM4TX2457482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b273db76ce46eb10156dc50a328fec7e85b1321289630e2aa1b2b64663676. 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/QM4TX2457481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1d87c63d4e69a356b9b90bcbfbed0fde9d9dfe36fa159decc57cb310241d01. 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/QM4TX2450193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518615a9c4366b53fc82a99e3af2fe49fdff227492053a067ca4b241a20940f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2450185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a80c8a3aba5c346c3d3b9a086b11b76b3c75bf6871a44cf93f900d30a00d610. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2450184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c24fee8973325e1ce17d048c1ff5006228ad8a6e69caeee80dc159b8dac641f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZFZ62394153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ffb0348a2aec5fac0dc685ca536606eb2b767a2095be8bfc9462de5216389d. 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/QZTBA2235175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ad970221cc289d2c1f4c47ff65251571e1cbc6c6f68c9613a5c82fd67d63f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ22176757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c5c169abebf6eed6888086849f8a2b7898e2c4a5e25ba9da96bea1b5a128e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZFZ71977683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc76a447e29c8020ff1855c3bfd17fe1f9607544d11163c884c0fef917e3ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ71977684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8865d3a200049b35feaff7fc924b216ecf5a5616e502c4cc4e71b0ddd8733ce4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZFZ71977686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c941b6036a782bfcf08f167a820f50cb95ab272c701e982e7a34b0bdaa1a49b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ71977687.