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 0xdbd60948f7c5ff9267c8313dc6260bf041d461db502b0f6bce15de359e557f7a. 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/ee7a447e-75e4-4d51-81cc-d199a0ce900a.json and https://artists.proofprofile.net/proofs/artist/ee7a447e-75e4-4d51-81cc-d199a0ce900a.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 0x91e6e2c45abdb51f1d7823a32ff85b2e5f7b81350481f8b448cb13f1c86b99cb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZEQU2114848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651707a7152e8ffbfe638a29bfc77c8ed2754f15cb31e53921ea0c94e0af4e32. 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/QZEQU2114854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f179675ac76841087fac1bbb1f6ee00c7326fe3f668c10dfd8cd47923613ccf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:17Z), 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/QZEQU2114811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a7b75f43159b75503bb3cf0bfd1acca506586b7f4bfafbf8916e1c7447c0a7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:35:13Z), 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/QZEQU2114825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed0f005c6b50a065ef4f40ef505461e61fbdb3da982083aab4c9e9fabb05c86. 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/QZEQU2114826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdde43fa4bba614a230c5c1885d69f0cda859e224327c5dc28741415f7a98d3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZEQU2249499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f12af9b0d7158ade724b6b5a5f5472942a9a0a51e5c1232a9afc01bca0e658. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZEQU2249505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ff17b75f01c9fc924dfe48dfb971b0c3b6ce066d4b08b6c77b61a1516911e. 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/QZEQU2249506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea52ee82a7399716f63c47d5de58968bf2882f9fbfd3c572480622abc625fa65. 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/QZEQU2249512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a602dabd04f1034f92e96b5c346ec7f7395bdc31daaa2be3dec087fb3cc10b. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZEQU2246012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946645b4b72a0982284982762bf931a9df361c2bc5ea737c1a6b8721a805edc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ESA112303166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fab98ca3b7c3207560843a51ca8cda20a33ee57cd8a29f96a1d428c33f5fdf5. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:41Z), 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/ESA112309091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6485fc19d2cff15bdf7207eb1fc6e57ab3431d436ff6f6795dcb33de83dca99. 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/ESA112431152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f6bbad932e7c56f2a872580ab73126512e6cf458f5f7b03fb5452b8e0c9312. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ESA112431153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152923ac57501c9b96cee04efd1e28fc1d01fb24f443b11ff2f2a9ea8d8371e. 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/ESA112431156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac5ae69b167b595dbd721c639231c6d34e9344af232d03e794995b3344134e. 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/ESA112431157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f14dd2724f057fd1037c502a31c862aa9a113a8a458e2a56bce71753dcb352. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZTVM2403516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca5c6fc1f7c39cb55c2cc1195caf32d9bd95a4b7ae803e705f1c889be28c5ed. 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/ESA112562419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127097f7a6feb62b845b0739908045efac8911011b83296291eb8a44dc61283e. 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/ESA112562420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793560594d046e1b1f93f5dc3ac16484a95499bd141785e2bac9576c80f72c79. 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/ESA112580860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3edfac95505634248d4612094dc401824fcbde2f6ea306393dd4fba9cdbed5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA112580862.