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 0x3d3043814bc4b95859b848fc7b85f4c891bd0c0f6dc94e43047dfd597d440e84. 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/abb085cc-3f4a-410c-b184-4cc9d70166de.json and https://artists.proofprofile.net/proofs/artist/abb085cc-3f4a-410c-b184-4cc9d70166de.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 0x722f5b823254f2b3568de51d0fade8adeb37a8dfe83c45647975a915475eb759. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ROGRA2300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f486fa3664ba24523775bafe627a04e3308a072254619b43744fca01344e18. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:36Z), 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/ROGRA2300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e363177d4d84256ae4c8f6ddada0051844b8f7b8a8d86848b8095df98123d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ROGRA2202762.
PÂNĂ LA UN MILIARD (From " Haita de Acțiune")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422af2cf76719cf539de95b50a5a4841b5d228bc9232a05607b43ad135712949. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ROGRA2300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477b284d44fc9b0c2170d012eda2ba27ca486124bfac7b4f38127bb2cb90e55b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ROGRA2300562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb001d25cecadcc3493ce4b2471083eff8f2f0ab6bb3196392727b9da68312f2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ROGRA2300563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cb9b75381216a0910f299f0b42ed64e700e8a996f2d192dc4dcaf7849cf438. 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/ROGRA2300566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd480efb61f4eac2f4f757098350c1d63e7e13c85f8405dd5ab33d3c688f72c. 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/ROGRA2202752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd480efb61f4eac2f4f757098350c1d63e7e13c85f8405dd5ab33d3c688f72c. 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/ROGRA2202752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9cc4605c56d8b05c11eaeb766d47e0b967b9f38268178b8fb4047bf19d802. 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/ROGRA2001395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b055558f457991513d99dd3e38d2a9356c28f24d1784f9efefb116d92c3a14e. 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/ROGRA2001302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf7901f44118dc35b966b3d43b53152bf1bf7e99c8dc7d9ee2733ef2e9dbdc2. 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/ROGRA2001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acd84bbdf4350d44d4d2c417dcaa449b269c2e334b9d3bfe3bbc6539cab4df. 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/ROGRA2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db479654210828de90595260fdbde089908250e7cd1f488fce1348044f24a44. 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/ROGRA2101658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfdc24178384f4d851c92b02f0c07a2f1e52218dc09e5a11898fad3663e633d. 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/DGA072384124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922aebe3bf3ec8f085749d6380fe0405260796fdd83b802c65b044dc798e51d6. 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/ROGRA2300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738c41dcf46f2deeba1f6119b2dac5205c26b04480178fe9c7218df084f1f94e. 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/FRX202376179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc963c6d0417f3304d2db7789adcd43f820f8a7029ef29cfcbb8801c5481b8f1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZKUS2148937.
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