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 0x412ebee196d11c63754fd12164f1ab0745aaba84e78eff733aea1e06b7ec58a7. 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/79a7602b-bcb9-43ab-b985-289160450a29.json and https://artists.proofprofile.net/proofs/artist/79a7602b-bcb9-43ab-b985-289160450a29.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 0xa55ca9377b17fcff6e5bd13b668ac48bc2819e6123b71657f13b2a1994b11ad3. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZMEN2033986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49cfc7f3d640c8720a55d34ccb71cb723254a9223e1e987086d875778d73f7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ62122843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5db533558d4349fc3292df7a40fc5df465f9ed5b7849e41bc3aa6e0ad0adeb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ62122844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf85c0b690c5c5f5465a3def672a893dc268327350dd576683ae8fe3bf103a53. 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/QZFZ62122847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd930f2c82238672139d5d33067b74ae1bf30768a190bec8ec74d0f1bb419cc8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ62122849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d3577989a283ee0b87dc7159a532ee430a44f20852843e61d6139767d66f53. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:36Z), 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/GBKPL2160671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6006d367e1c333e2fe23e84ed0d648f53accddf79cdefa8c46f8b418d45a998. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBKPL2162428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d01d65b5a1d9e1295cdca60acc777739a3fd0e4ca7c95ea2ba9cb7a5d9244. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBKPL2162427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc183b9bb12cf62bede98297bf478892e97e93d239d89230e4fcfeaac4a72584d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:49:29Z), 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/GBKPL2162426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458d5ecae2f1caf9b7ca7e8d63a01adba4a6fb8fe3680b4aa7de5cdbea4f9a4f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKPL2288751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17278a0205100c6e86282d4ff23727d21936edc4fbb31405622682f457fd9c07. 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/GBKPL2288744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b235c2496ccd0a1664ba7ab91aaacbcf23bcc1bf66065f0165508476a04b8b8. 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/GBKPL2288748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6171beee245408de88fd41ed6594002b0fc217c50273ae024e801cef0797b67. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZK6M2377657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59350ed6e1daaced2b718dc55843239eb41cb9a4eb0b8fdf0b6022782fa6e63. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6M2377658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bc1a4b63b3b135f4e9001146294ce14e216964ce05050848ff2e1436c6635f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZK6M2377659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e539f81495c0bb5cd36f20634be4dc63a8212c0b35dc7f24276d2566b23bef. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6M2377660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb551ec624fa87650f97c04e00fdafdf9216bad954516c181bd9fb7f1484ce63e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6M2377661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65b32ea52830e26d3cd33ee0569fdf10c7c144065c7593a70c3b735d1868f91. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6M2377662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3826277f174d1ed002e572970a71d1902e49dcc4f550d1cf69dc8f53b6ffe9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6M2377664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b84f17a3820694bb7795fd7d143e15af10bcf96d594c20a3d3498cb9860d31d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M2377666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925c4d3fd5b4f79116a1e65c9f0ac5b5f55cb565df8c070ff809203bb088cc0. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZK6M2377668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd645e3c30b68af1324c8b021bffc4dbc3fecce598aad73fdd94f2ff0ffef5db0. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZZ7Q2410071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe240f8702371f36f98769c754eba0884648f73d4904a1be29ce570cf966894d5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:29Z), 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/QZNMX2543984.