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 0xfcc180be5049da21a1e4ecd570b70d112bda28127af0001793ae8e5d2848555b. 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/05466718-d1e5-4813-99dc-121931d76f54.json and https://artists.proofprofile.net/proofs/artist/05466718-d1e5-4813-99dc-121931d76f54.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 0xb338b5d9b1f0e6e54581aa2253da319cc98781d046562280343bbd059a67b923. 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/QZNJY2453108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdb6e0687d598c0912207cd449917f49792f6f0c13b178e677a6daa436d334e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:11Z), 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/QZNJY2494408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1a58cf3d4eac4be5b9f63ae6fac99897b302b6c1dc728be1e9cc1a0a75a9b. 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/QZNJZ2471938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40758ee4176e3df9b049124a2b3d615ae61d9ddcac5bc6e324227b2f3c6818b. 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/QZNJZ2492912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f0e0a53340703bdd42e7e815c905e7834b514f5885dc51f9b0110c320c457b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZW9L2442478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa205e88102fb2d37ce5522116897bfb3365d68492f6e166194b64a3f2aeb1e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:08Z), 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/QZW9L2446240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f10aaf5e9fba46f8a1ed85b3a8f73310a2bb7420fa8bb0fe6386b36e12dcb6b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:24Z), 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/QZW9L2474794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75d53b074e91c7d98bde610888a63876f5f2fc91ce021745c895ad78a8af9e. 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/US7VG2512027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f38af820b95b0f0d7a8ac774926f04295c23b46a2fc4f3c620115ddc2b5424c. 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/US7VG2512018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d9d57fea121bcb02bb5876457522be3558faaabaab30a1d62ad8f8c8b193c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US7VG2512002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74763521576ed385abc629f21a61901ca4de8f2d447fde7901a06da518e516d6. 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/US7VG2554492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b9b8536a134aa1f4900121b7cba71e56092250cef7c13303844bb09216c981. 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/US7VG2554494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626a4c11493ed339b9654c8ba7616d60937b8696f57a353839c7f6a6c4775135. 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/US7VG2554496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e800eb975f14da129b345096a46f720a1f75bb7140be26c3b7760320cf78af. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US7VG2554465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684775f366740f8e7d158a7de2d19dae8d35faf02bf5a2b566e14d926b968d51. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZGLM2559158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f050f91365e9750432a3e054b04d533603723c0c26df4890c02a03cc1d41a0a. 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/QZGLM2559159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c26fcc21b3ba26e347569875cda7977989f4f9f4036680c850d25067e39585d. 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/QZGLM2559160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb950378e9d3eabff1721071348a71bb70ec9ca28a00b8de12ed2006cf6adde6b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGLM2559161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb86ebe727959bcb66197bef059e63bf1855cd0e5488c4c51d9b3f1d19324d. 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/QZGLM2559162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9623fc8e161817c10a2a8f0d74373d1ec452fbb52655cbb58344490ef4ebbbc9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZMZ92591464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70748124e924b0c9df9b05453f15a2e24179c5c5ac375d7d37f6eb104e0f5421. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:41Z), 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/QZMZ92591467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf2d900c5c6cf7c118b8278c7bf97cb39bf2cbffc3f615b7dec7308c494499f. 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/QZNJW2539070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb00610f7bba6ef3397e2a09569b7aafb7fd7f954a38e22ea1b540ce820cd8e3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJW2539071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e14c330509a3e77d76877da6ecff4d6db2adb7fff9b6649effee73504617672. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNJW2539072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9017b715e2ca9de794bbac0cc509c015252c5ba225d54fdaa9f596c4e192cb0. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZNJW2539073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7dfd902d20be0764735d4906712656f3b4e41c71df7b90e889029f7e347aaa. 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/QZNJW2539074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef05011cacf886db5af90eb7d7f6e4508ca385b7db082d5e22d23a7eaafcc9f8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJX2553146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37df66aedf350b5dd1bf8387e445e8b285a11a0b955f815a08aa283e2cea6ca. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZNJX2553147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8178568edd0d54ccd24a1ba9fcf4b46d08163fde28aaf3e98a912b6cf1da0d. 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/QZNJX2553151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43560f20237428922b50f898faedc5ef5d8a12c87b40ea64454a7b4b52ee3db1. 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/QZNJY2531289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f9db5f22d204e4dbe35ac48bcae8e9556f12a2316cc845dafce18bd6b21e86. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJY2534956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd4101ed46411a1881f702de43ae10b5b64bf26f18d7f1f7267c000e7428c1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNJY2534957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c41cbea746895322d2f9aaff9d3730464c834e578d99cd13ecf65f4e87514c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNJY2534959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f333530c4e36edff4712684bc65e8762356cec4030d7cc4e5f84616dd2099cd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:50Z), 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/QZNJZ2510997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb75b06bf49096cdb09009e110cb6869a71ce686846cac5e757203469f31fe9. 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/QZNJZ2510998.