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 0x76aec07712ffa918009c815c0f5aec304b0fa59395fc2f9accb57db427c99256. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed18796b-7c63-4cd0-a741-9b99d93685a6.json and https://artists.proofprofile.net/proofs/artist/ed18796b-7c63-4cd0-a741-9b99d93685a6.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 0x07e8c14f02a07eee3f672c49ba9e7b6166eda915c6c2e5db1a698a834094553d. 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/QZTBF2558894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87929e3e8341039b8cef48c26c09d56a5c8b1897fe18e63084d56c238d3ae66. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:28Z), 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/QZTBF2558895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b3a05e3021b99661498a6e0d6a85c017e185aeac74e9f2e3e28b451de9405. 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/QZTBF2558896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddeb3bf91164d779fec8fc0b275fc9938400118294d9d55a2887f2421c208a3. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZTBF2558897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21045ce47cf7d906c198da5d47fe129f57b47137b55b92ff8a4a04fe8e65d9b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTBF2558898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f0b6b7959232b0a55bbf862286934dbae6bddf053463b30dce528bf1a3103. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBF2558899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e1a6cfbd2c5ff74a9d6fee7ac3b8a16c5a81084b61ac3fca38257c91d44ab6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:30Z), 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/QZTBF2558901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2c1b21c1082238cdf9fd1b43e0f4286b439e73a152e1e8ebfa8fb4676ec9d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBF2558902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed2cabdecbcf6685a510acc96fc15d001d5448a7f9114b08376ca5965a5c0e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:54Z), 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/QZTBF2558903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae4b34f7c58088f2b8af61016701af1462e2d243e291ae4ee6f37570ce2648. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:08Z), 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/QZTBF2558904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abe40883405b3271c6859af36c3b449ade993b02b8cc8f2ea07d959254d3a74. 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/QT3EY2525444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695cc537c281dd822ede06ed206b6ff072e902ae8c0e66fcefb5357bcf5e8176. 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/QT3EY2525445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef782464f6048746092e4d6211bfc016421a6a1fb3b82dfbbc5690751ca4e5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:55Z), 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/QT3EY2525446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b02cc7ceaada98793382901c6820acc9c815ff23421feaa6667427d19913b37. 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/QT3EY2525447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ff9d32cf453c619bbc778f02875a52b771d44f5c20e240a44a64fef4d5dd9d. 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/QT3EY2525448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd847600c0872ed8abd3511fb7be384f6570fa9bc2b3d1932328f37401c0584be. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:05Z), 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/QT3EY2525449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca9c6dc944d70da551d49cd82b48685b024a6296588624016b5d657ff12f7c. 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/QT3EY2525450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764350dec76aaa5e414968f0372fc4cd3d92ba8150858d9b08fa1e88880dc60f. 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/QT3EY2525451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46811f3dea2edae5229718003c6ee4f5d711f2a4a452af228f5515dccc1756. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:33Z), 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/QT3EY2525452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753ede3daec6bbb611067e0700c843fd883d8f32901665d073e82934a84bf5c9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:37Z), 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/QT3EY2525453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068f012b820603f2d951178ee8a467ea2cf1ccec349333e0fa6e4e173e3928e1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FG2537136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df664107a048862fc45def8a6f7f9c4c7d06d3e56371bdb2b9afe5536fc3c9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT3FG2537138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b467161e0bb67207d3a0349433fa8ff277750fc8a3345f3e8abf03e993496. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:52:04Z), 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/QT3FG2537139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f72f52af7b7cb9ecbce8616c7cd2dade9b693008096e49f1979d484a4713d5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT3FG2537140.