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 0x36f1858a917555f65b2a0102a40b881b6e6359314d600bf2e792c3668225f4e8. 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/9b8957fc-dd48-4483-a86d-07c3b19e924c.json and https://artists.proofprofile.net/proofs/artist/9b8957fc-dd48-4483-a86d-07c3b19e924c.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 0xe3a6f3db9acf9efb9cb4f581dd2c7ec9dd0bb9d1a62638780bb11788385b7f37. 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/QZFZ42444654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ae29e6f45065e7a413b72951c50ffbe8e27ca590fb765c1495821b1d58bfe1. 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/QZDA42427183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fe2983231c615d46c972cd8483fbbe31787cb14730a7be9472907553b55046. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:18Z), 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/QZES82436207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acbb1988d65d8111207574fc08a19d2c28fa4e0469d73b30192433c91433c4b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHN72447711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ba256d59e521d789d56ae12499d6cc261bfed9b3efd66af09cd744aa285168. 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/QZK6Q2455344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8ee804eb2c1262bae78bb2b7c44f11531842ce2b867a0f019868b0b2ca92f1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMEM2408062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f192da60dd531eb80bca538e49927e43d03841f351df62dfb628428e9f02f3e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWR2432371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17878dd257c45b92c4c17b870285c95189a7a85761856d08cc86f879a908dc. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZNWW2458988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de5c03faac23f899c1b8d945d35d23b01c370985eab9139a61ca81837bb56c. 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/QZTAZ2406365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff79ca03889a692a52948d0acf237c8f7cd1e022220f8646b4674c1f4aced348. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:37Z), 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/USANG2419964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8e9fa495b680c03727c474a6a9f4d9e38a2e878440c22b38abcb70b77b8ad7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX4R52409608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b8bd161712c2ba70a4a07c9c926f98d16ee885b01dabd80b0589fabf211c81. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:02Z), 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/QZTBA2461249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815fe3b9f12953e75916c39a2c92b8fd8ac6d0c6d3884d9aaa0caadd2162bca4. 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/QZTBD2476876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9aef649fdc02c3a23b91c397d7ae50763cbbbf7cce88eb3d576f3e0b5609d3. 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/QZWFJ2487724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72a90ed20bb774356d091b97618815087e824c5e0c293044fee01eb71d5f20f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZWFP2461333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2ed09c60ddecd7dd8daebe9a768cb731a03d8d7e7d10f3388645943a3a740c. 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/QZWFV2418477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7221c0bb8b945d9d41cb067214b222b006d3dfa972e6ad1be7b76c1266ce1e3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:26Z), 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/QZZ762466540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf557bb799d35e93fa9bed260547285633700154d93ba451dc76635261f291a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:25Z), 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/QZZ7N2488137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef0ff3a00107fa159688dd7de0a44dbe09791599982a751f47c47d9606ecfee. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3EY2499033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274fba8c968e4f48cf836140be7b8b77ea6ab2ddf0b5f2f2a3b4839e77d7578b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYZ2595299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef27c7065ed1b034dba47cdb0fe977f89614b637d9b2528742fd98c776d564. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ72597623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd6d2a22890a88272a89b647ce26427eab9f571f485bf14531eaf9086720010. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2597981.