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 0xf0579a8a65569c07c994afd275d51db67a6525dc02cf225b6860e4a079299105. 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/232d9c0d-e486-405b-ad96-d6e262ef4925.json and https://artists.proofprofile.net/proofs/artist/232d9c0d-e486-405b-ad96-d6e262ef4925.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 0x0ac62378126b4d0ecf5b8f18b28e9e9f781df35c947a6004c82415d66b6078c2. 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/QM3DF2247932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34687adf69bc25910c703ef351e3a582807808f1006553300dffab905647bcfa. 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/QM3DF2248627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5841e8752f0ba15f49bb1192b576a5604b706dfa4af30e6ca7e2619d3d16c41e. 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/QM3DF2248626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecac8a5a90ca5b948add7bc152131d0149f2f5778954392c098722a5e8ee48c. 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/QZK6N2350055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f2e31c789fbf60f15a533e2808fd5dcbc60d55d71357b456af50692ce5a58. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6N2357884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cff8b3a465ea5270208052dea2a3f20c5174c0765b84e50894b6ed0a9e4a0e. 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/QZK6N2357885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf301171b558cbf723c772025e22110e9042af36dc8b0b9da77920613343c97. 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/QZK6N2357886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94320c09ea480e62e7f9bbb648217312d3504674cba9277ca053936489dfe09. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6K2319408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0346f8b11ad088ed6ad700d673d17ec7882e3c0767da3bbfbab55261ca4bffd1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZK6K2319409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fd52f65eda85df729263dfd0f33c577bee0391a7f3e6818e59bfb4074ee4ed. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:09Z), 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/QZK6G2390150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a214d6147a98ccb42a1e5162861d369de7f022c9d96448ec32fefcb781240. 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/QZK6G2390151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7982bb596a1cc6ca7ed3592d0595a9429e05ca8029ea6cc65f193744bec2d6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZMEQ2306852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71bb36a53b9cf5b25e0c9cfcc5e65cc5c82e0feecc17db3ca9738f4df713b9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEQ2306853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9222bf464ee1c1bd23f10b16663e2fe197fc5caae7e5488cd5a155d10fd70b0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM3DF2253089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bdbaf994ccb28e74f8afbc74a498f9c9ab0740dcd1a2db7cd825f64bbe70ca. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM3DF2253088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e28a0e09a29de025bb029c84332743c78257700c7dedddcf0f9548914e5c2c8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM3DF2264296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017d725dee246d245d643ae128277c812f2e031b2ad99583bcc79cfc24222e6a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM3DF2264295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e719eef1b3288121ce8fc2cd68144b3bb75120927066657d8029e531bc0d8f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMANG2234071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb1690045d96ee2b2be5bc3e320d15e199ae6edfedcceea4742ddb5981c58d2. 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/QMANG2234070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78893f012539ac19bdc9b1bacc427deb6e27ab003e42dbd924da312668a1e0e. 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/USWB12400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f53468aae3fc02eb821d0dc924300c9c59833edd30b9e8bda67f0b7ae20018c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:51:00Z), 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/USWB12400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7080247171e1c1891614bd28f2af8b38ac0179058dc4545dfc9b8fd32378b1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAIB2470551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b600b0bcdc989ef2af66ed70b6c2130ce1c8969aeb6ce1946f44f8c18c9a4e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/CA5KR2486087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af3a5b2235115737f7d594cfaf84a2447974caeb507271fd4d22792d7c05d1e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMDA62447660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609d51d946699a31cafb9fe2e9c5f8d402199a6111a45c269c17230c1437164e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMDA62447661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350c78eafb282d3aaca8aba623838646fdcbc7cc13f29b2011168753817ca12. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:45Z), 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/QZK6M2554450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f2193a0c6f93dd963bb45586ae9ce23869bb529b23c5b44014cb68106ac062. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZK6M2554451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab0fc04155927086719f1af40fb36e682eff1f95ba89bc67f67570b4a3f7095. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:56Z), 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/QZTB82546299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaece9d3814878c57ccafe6ce956c89a0aea0b7657214aa5e24500ec74aaec5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTB82546300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce30487df49145d5c87d86f93fecac614c098e21eaa3897f0cf3c56d90649f9. 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/QZTB82546301.