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 0x59ef224016eb0ea6ec23a613edfc6f69aa8ecb35db1b4ef5b93986ea9d5418bd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/860d3762-d0f7-45b9-887f-ff86b795f84e.json and https://artists.proofprofile.net/proofs/artist/860d3762-d0f7-45b9-887f-ff86b795f84e.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 0xd853c813d19aeb970e20fdb2d862ea61f2e8fbf6e418704862d87002b5770339. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADB1777354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287fd63701fafdde1c0eadfd6a674cdb1c4ccf0b33db95eddd09ba885e56a463. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAEC1991597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0772e13f54c9f250f06ff28632e82fa681b24be6ab6e27ed1f3b18cdfcc7757b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAEF1905468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb71626b073c8468d2276cbc778bb39bb649f4ebf856c1f8aaf2e6a2caa1f28. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:08Z), 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/TCAEK1934406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa25a071caf00cbfbf44bfc70384e59414766eb5c8794dc01ecb79ab8b97da6. 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/TCAEP1901101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec6a91142fa4ed897dafcb5746c6d2401f86881e96fee5d6548ba871c5522c7. 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/TCAFN2168188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a276fa000fd4c971ec560067d1d6e52c2ba48d2f45067b46c0551ab92e14c65. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:20Z), 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/TCAGB2297366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7174b2f0c3d98e5d4972df9ca623352931b08b5bc9669de88450c59f83163e. 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/TCAGH2250738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a6dedee660a020e1f852702c618cc995caa5e80ebd668f0d1f9fbb408d6b4. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAGH2250927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20776803736d0644fa7db5dc663abe5ced8d5308a5b10a63a29f8c8f728a272d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZAKB2435659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3121aa768f71815acb4d1ecadbbf7caa80745934e842106c7cd7f72f1f3d7738. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZAKB2420351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a9edbd754d36c4a81cc67d008632fec35d0aa55519518e40bc34a6c0af859. 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/QZAKB2435660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaae7d299d863f56a651556fca5d39f8b92f11b2fd0c2f1ec920f325b880992c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:34Z), 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/QZAKB2435661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b31bf998de2d4b19b064259c5409830253d2eba2e8bf2714fb15836d8ab909. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:49Z), 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/QZAKB2459390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8668b6da9e50e6ec4a6b7e679dda3dd7bd51983c807f9ab1e266d76116f31919. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAKB2459391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7287608ebc9e35ae946e720de73b8df9be31248065dfc1f084bad6c0b12fe53. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZAKB2459392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a9edbd754d36c4a81cc67d008632fec35d0aa55519518e40bc34a6c0af859. 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/QZAKB2435660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3121aa768f71815acb4d1ecadbbf7caa80745934e842106c7cd7f72f1f3d7738. 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/QZAKB2420351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91984b61bb4c7028e21b928445e9eb7954e781f4d925aaf180cfdddaa243319. 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/TCAIL2439117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e449635fcc8f33d302dc30eb37aae336c8393705a60d0528a4587ae3c83fb. 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/QZAKB2459393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20776803736d0644fa7db5dc663abe5ced8d5308a5b10a63a29f8c8f728a272d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZAKB2435659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f3cf1662b94bc06d42128951c64d8123a4cd1eb563e79870d93f0266e6aca2. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZAKB2459394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659f2acba056e35553492ad345f948193c901474b4d157f3cdb1092f47d449c0. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZAKB2459395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaae7d299d863f56a651556fca5d39f8b92f11b2fd0c2f1ec920f325b880992c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:28Z), 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/QZAKB2435661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3695ef6e8c7d893c07d85008698a926d1c7cbf064c61aadd60934b91df4bba32. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHX2411175.