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 0xf690c5cfee74a91cdb09cbac78c954589e043a392d699b72257a74f0c3f60606. 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/b530dd54-ca7f-46de-bb08-bbedff729dd7.json and https://artists.proofprofile.net/proofs/artist/b530dd54-ca7f-46de-bb08-bbedff729dd7.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 0xc520849a2dcc768a64b0fefdea9ede93448e86595b56881fbb0f03f8c23201cb. 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/QZTB22241408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5908c6ef5e7f0eee02c94499d34fa2a14eecd05a4a0eab5446c7d3a8f4271d69. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB32236156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a0a2fb0b5c29ac6e4a024871c14761572209e3db0c6c133dbe289cbcb0df2c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTB32236160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1427157d4fe1d68b5dc5e50c54ee05b5c458659927d9d67f27623598ef2ffb. 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/QZTB42278856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c43c81cc940fc1a1226da43aa2def875a31f0eed4fd4c60f8f372a7e92dc7cd. 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/QZTB42278867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601b10b14b5d850bf2a2da6d6c0c1e5e9b228af4bdf023a2273179800515ea0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN42308236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5558f82c7ab3d626b11f135f55b69d1ddb11352ad47775fec658b68578569d14. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHNC2301677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561892c9655a1a5b59e3367750ed94efe28c4992a46260b0f48323dc1d5b7ba6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZHNC2301678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d873b1ecb7748d5aca93837857f3b7dbd52da5857018c212399fdb86bf7df73. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHNC2301679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe750249506ef9faa5a5de5b3decdc8d8c9a1ef6ddb256c06505e77032f3477. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:58Z), 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/QZHNC2301680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e9ebbf489edbb6472289629de5707fdcc147f2c06a50241a7bcc3d81e13587. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHNC2301681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09926a0054dd3133ec9c4624cd07fb32d12aa3f947b69727379ae45e2d0bc715. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHNC2301684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620eb569e84a67494704fd4c7f300758c6b98a65f57df76c52919e7673013ca0. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZHNC2301685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4aaf8525e1587492711e79c003af653c25a9ff96af9571a843b475053ffbfe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC2301686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f964bc73971c58ff1764533fa6a0bd7ee2addf353638d01c8a61dceb2f0f37. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:14:32Z), 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/QZHNC2484113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac375e9e45203376834dd9e0438a69232c1ce90471ad9bbad69e0096251847b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:09Z), 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/QZHNC2484114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ba914e600719a057198419a0e04a4c34e2a117205eb171599b0f599a6437e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNC2484116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2a162bcbc138c6db0824facddf4ac51afe5e92926980741817b33cf9c7649. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNC2484117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205c4efa1eb378b8cf42d3ce22c4446d40dc0bde514e6c9a7a6b190d4752f1c2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:54:11Z), 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/QZHNC2484118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1443859f650bd4b72d45d4e28f469d5bfdac029e0181f4de03f08237da62c69d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHNC2484120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7aee4a66d67d618f73ae6f9a71596b64326166bed0ba47a987a6b5747cf48b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:18Z), 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/QZHNC2484121.