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 0x2266c504212e3325a13326f25932107b60c7b5fbedd4965bee31adcb119e1780. 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/e50fbc86-f274-4175-b75d-2fc403bd8655.json and https://artists.proofprofile.net/proofs/artist/e50fbc86-f274-4175-b75d-2fc403bd8655.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 0x92179acba39b33d0fe5c340c0683e593a8ed9df0b1ac3ad676fb230179bcd3e0. 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/QZDA62222273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0b475b509fe2e60116cfdb8b93752261bb5b3c542f2adef3b0ae9619f2d44. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZDA62222275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3693488af33ee7f837651d35df6e419ebc06f544ce62e2be71479efc3d6022a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:07Z), 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/QZDA62222276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3884bfe56c8402611a1b638bc09f54a88527cd7f247c16c5af7298ab39e832. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA62222277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d96b39fd897ad7b1587995b1a73658049fc5820165b8a4214aa3d6770cf54b3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:08Z), 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/QZDA62222278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee75f870eb707f1922a44ef8966ca9c4e74295047cb77857072b377e0c5e088b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA62222280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffd4b0a7ff8fd3865a788cf09b223b5330449cac32dccce0b49d00cb362a786. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:39:45Z), 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/QZDA62222281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa731990528bdab05318c462c4a3196343fe733b877162b67926703e1a997aab6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZDA62222283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f742daa41bcc405f707b311e0a560d030655c0e20330d950262317d5da36cc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA62222285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b80749e892b56b61039f8de9a14be6c5c18e241c93c4bf8507abaf82a4bad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA62222286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faa17435c21115f0bc3352ae24443813813fd72f6e69f921223d59ac95c6682. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:01:48Z), 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/QZDA62222288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f17d14d401a6df6c796154efc68bdd6b03070dd02ca613cd551e36f60267d9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:07Z), 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/QZDA62222297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63716ab035567e9073a10e5c810124a708e29556fb1d40584658775f58100ef7. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:46:59Z), 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/QZDA62222298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ced3da057462f7168533fe6ca2300ea29915a32ae9682172f7bcee572d8bce. 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/USUYG1535851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832ced6541eac926e0f6fde9531cac8b458424a52c5f769fce252609b06f364d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:13Z), 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/USUYG1549641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a060eec0e3e7bdb64da9afec3b95b0bf247d2258546b4ff9c1cc373815f558. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:42:32Z), 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/USUYG1535234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef4a61cf9341c7e06deddc140920a293f2fa6469ba577e92141705c848bd25. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USUYG1573016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff69c065946ecde8249a8569a66764d33ba16d2deff84678d542c8dd43c637f. 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/USUYG1580913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6a32ae3e3d06065cef15fb2e8e9a09229303ff62b0e1d40ea9390cc565742. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USUYG1572692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9984dca72339e5322192e93d715fbb0e8b7cfd3561244dd890c2c85fcc4408. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:20:54Z), 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/USUYG1588821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfb271564a581b8bff4575cfe2646b3f86f9b05f20c1c4834605ce0f3969db. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USUYG1734289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfb271564a581b8bff4575cfe2646b3f86f9b05f20c1c4834605ce0f3969db. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USUYG1734289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e85252a216d696227ec720b0393d77f4ccbd470f142f71f24a9556fb772c7a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USUYG1734291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd276f66c7937ad0633c3a369f957c694d0593ee51c8eff18cbfd3c9138af567a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USUYG1734293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a3e468ef768d7754808a9772298f439a83fdc3d3b0622ae6c60902c5bfe7c. 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/USUYG1769047.