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 0x24992ebfd942f27c099bfaf9063cfc0a1dbaaab636cc6aeaf820728277b55ce2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1219f70-c6c1-4a82-9360-d9946f852c06.json and https://artists.proofprofile.net/proofs/artist/f1219f70-c6c1-4a82-9360-d9946f852c06.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 0x72058d6658303e2fc6301b1a1d1631c549f2c4bcb20f6d83c37044c9a83823f3. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFN2472661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac1e8a86b48b75eb5ae071a383a43d985cb9c7850cc5731145f0ab66c453e15. 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/QZWFN2472662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92311f989593ef82b4e6282f7e84c6884bb58c6cfb549a86b5870ee0ddf2c152. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFN2472663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9398e3368d6de1419ffbd71c41339c77f5c85bcbbce3983db70e3916c392e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFN2472664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fc8de07010f7127e292945be86e9214d8549b3eb318a70c5993bf65dec47f. 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/QZWFN2472665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45616cbdcf498091eaf1110bd26aea8bb78cb71ba3d5de04dd19eded90afac3e. 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/QZWFN2472666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7de2726e9ee96f6ebb4d617ef2e455ecee306426233c4ec6fe76a02720079. 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/QZWFN2472668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac5ebe560df3bbe20664acf55ebea9048192e3549c6cb7618779d605af6307b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:59Z), 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/QZWFN2472669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fd5a9210fddbb5a9384facfa3849d6ba313758e97d7685e456d7ee24acf9c4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFN2472670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8a79eff70478cf4c49d6bd41ce90a761e737778c650fb0020cbf1bb2b7aa49. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZWFN2472672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414d52a72119ed09ca83e7fd4b914f0cd243f0a9425680fda55cfca01ed563e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:55Z), 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/QZWFN2472673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ecad24fc086f2bc34d13fcda32c4ce0402be746c0372696f025ac4887599f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFN2472674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6e4fef30c5e0f5556665b92f8044c7ab3ca2abb46a715a466dd96cd5f0f37c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZWFN2472675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f0e5105e815d42286812826d72ed3fa05f4900ba76c1db1c16f3d35d467234. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:22Z), 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/QZWFN2472676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f3b1c425eaf893d3f1f149bd9e53ece3e79de31cadec03ffb66d650c1cd920. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFN2472677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d89af5d71800c1991da066002b0165f5d1f4a353b0a2a96c80f4e7cb519869a. 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/QZWFN2472678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb924d87eb476330b81540b35323456d98e2f5e722aa53b55a83466db45a6e2d. 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/QZWFN2472680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69baaec4f23fd8fa7f824d1d1ddd71ecb62f431328526266551d800cebb1cabc. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZWFP2410798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317777d40dcda8917ea1d3c3a474b94d9ddabf064f451180e798fd924ca2f95a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZWFS2422907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ccc9b537a1828ce2d4b9f764a0c40955f450166d2c068446a7bde3634aedf6. 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/QZDA62522633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b580cbfc692e5fe7ad625b6fb243d8b04f31397794fbacdbae44c29de703b76. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZHN62580140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1134d5be9b2ea24cbe9a001648fa1bc043f824b2825a7e51cb10375874b5c507. 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/QT3F92597543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e744b4785aec3e8fe24a38f18d4f2aa9f2aa5fb7a9730ef623e072713792fe3. 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/QT3FD2590235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5874eb3ae6009f404864becca9e6600ff6cc9418a59c79905e27f634f42f304d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:48Z), 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/QT3FD2587968.