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 0x04d794508365b6d3c5350e92e8435299b3ecf957e598adb41ad4c47c26aacb93. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/943a6d42-ef01-4b81-aacd-b12266a19f70.json and https://artists.proofprofile.net/proofs/artist/943a6d42-ef01-4b81-aacd-b12266a19f70.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 0x21785f9f1f0974c740d880b9a68e4ef0e534ca07378723b05b7d889280581e83. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHN92468792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81207060927efcaf73ef3d38b4a8fb81e79a74e941408195fa93ceb406aac38. 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/QZFZ22477490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe628fa30322035c3a5c875bbe3f15dd62de9270a869b6f3f0d280cef71aa4. 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/QZHN92471818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ca6365cf7dcaf60f3d6faa0cd5c43926b5d8167421288bda39939b83de776e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFZ22477493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6ded9f39fcda0968f983f3616ab74c6ba593e4c8a6e8fbf05efd327c23d01. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZFZ22477494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06541a5620edaf8b1fc9cea49b4127706f8f60b2c12a35d6c50dc7d6b87d51f1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFZ22477489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc5ce6f090a97feeb636c3eb8441a3d53ff5c377c70b5cf84f39b7ec7b356bd. 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/QZFZ22477491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b1033dc10b8c3d6e3b2a24d1c46be9d4cb2ff781b950bb206adcf688cb6aeb. 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/QZHN92477217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d16e6d5263dfb5aa67155b25c22e668f08215b72a3cd724e201a6165df2faa5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN92471708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda197b199cc31864f6c7f67f0e5e62a5cf44b523bf4d95238c05d077a1546020. 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/QZHN92480239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde379752ec11bd47cc2b765e01a13d4ce66b18c58d6b7902d92f2e8f8615f252. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZFZ22477492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237c0478dbf401637815836f29f87163ffbe2aafd47b68ca7d885c34fb858d30. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZDA42492688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1a38d267dccecc21d0e903ae6c785a2b556e5f58e07d4332f0c599a54eeb53. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ22477487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad1cfcd64d4dd1f5abe3c73bf206215bed1f4f04ff1844639b2aba3b0a20d2d. 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/QZFZ22477488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d98ece409c263dbbab81910708d2ae18b8432861af788cd4761e0879868df8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMEN2406628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078c75d25b7b2ba58920923b472b130a6b6e203ee02013154f3188182cb66a8d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAY2586346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb843bf14febbbcdc3326d4ff0d365b3dbd51bc9b429dd434694605e0687613e5. 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/QZTAZ2594071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebd8228105d3211a672967735211906dac89faf3b86fe114d7bc6e888d2ee4a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ762529185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7de189bad256a551640da0483ecd6f458b162a73281d2bd68871e0e5032023. 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/QZZ762543255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ea08a6e419c5ccf97175c716e768e06409d2173073c3aaf341fedd06145485. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ762544868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de7b081a796852a70c37f194a975a343872ce80a1a6f90fe68457601d68d552. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:17Z), 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/QZZ762546103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf190da2d68b97c14ba2a3305e853ee8e112f6909311e612e981c2f6b79778aed. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EX2514081.