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 0x70437bbdaed60ac475a24de5423dd63b26a3e25b44fb4d8a51884c946172952a. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/623272b6-21c8-4df0-bedf-0c8b48a2ce67.json and https://artists.proofprofile.net/proofs/artist/623272b6-21c8-4df0-bedf-0c8b48a2ce67.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 0x5f8d0dae16d52f7c045d254a02f5c4982ab27c30a04cc27b2e12c7b78564f827. 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/QZK6N2508047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9cb754f301330924a82b7261e19c20dae83faa5405b6ee5b88a6a5cce60d92. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6N2590105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f763068ac14d1163473f81ce01fb955725cf2ea200248418225cf63594a63. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWX2515310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d71a95ad92083d4aec0d611cf647f015f39cce7f0e60057a6fa26bdb4c034. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNWW2540651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513a5bac90558689ac337762d0f3b273d668db4870a0de019568b40b485bb2c. 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/QZNWW2540652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20bf5a5315ab6a978b38dc3a7e26e94fd83410b72ebfec535f07117eb98af42. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWW2540653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1692df98ec8e17afbe99a7b8646752f9777a344c2c5b10f8493cc02644afa0ae. 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/QZNWW2540654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83533a7a0b59340a08a954fdacb58c8d76742c31eb39cd97b8e07310e4fe56e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZNWW2538415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eac367dcd0885028fcc309689f4005aaa8702c70f610bf748d0216e9e5c2f3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:55Z), 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/QZNWW2534743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6869f86c23f18aa23e9ed4f7b76f26222fc687e60f84639e61f63efdbfe5560. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWW2534744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c636587d1afd00b08d09a9ca8d1516d7b1926a5e1689cffe58dbb2b0d421e3b. 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/QZNWW2534745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf390b0bb8cd594bbe18379c42af6f5e3c411b10776f34992a904213574514f31. 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/QZWFG2547940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51410b5f6953f6fdc97e6839de9014234ad12e5814d431dc88aa6b16035c973a. 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/QZWFG2547941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6a323a89c6b8749c0c49141c32b05317dfd85b176d75604b738a238434ce01. 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/QZWFG2547943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbdf3a771aba82fa5f5d1851f6f8c7c2ec2d9765c91e80090d86d6f4eeba76f. 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/QZWFN2588368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965a69cfcfebf95df0b6f17466bb6d55203268549b7996c7fa4c77f897a2224. 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/QZWFN2590935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aab23c8ab02455bb5c13717a0f3f7c8ef3123d7286640199d325081be0230c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFN2590936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec40be77f6bab5f209411f8c64a0979547e3398e02853bb2f8f27134f9018909. 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/QZWFN2590937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dddfd22afc5d3e183e5eb28c96d8363d5763ba0991c3b823ae69612d25ce60. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFN2590938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe981f99ff80dd8108bc6feaec0f2f66b75a7fcd4213683e4d91b8bb120a69d68. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:54Z), 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/QZZ7Q2574148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadf0e911b22ebb7aa06fe003147563f45add693fd20126b67b45f5a42f9419e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ7Q2574149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe630dac8788b83d9a747321b7699be841517675db7f74d145a68b669fbfa4709. 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/QZZ7Q2574151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21c82b090af756563568b27c1b2d3313f4d6ae88358f57e2b20d98ab56282f2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:27Z), 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/QZZ7Q2574155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe201fa17e744040cd8e332a35ff078d59d994df9cd80ef95398415fb67c54e8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:18Z), 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/QZZ7Q2574156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d7f1427a9dcc6cbee70765e76a69233b481dd333b854823c0e9af08708b072. 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/QZZ7Q2574157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be77330a105304834c363db4ea40042f906ea9c8b20f083addeec31f5c31c08. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7V2547191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a47703b07eefbfc601a954f2340b6bbdc3fd900e8671372af0e7d2c5824907. 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/QZZ7V2547192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b365d5dc8a8b9c0ffb480bce663bc8ed6c0e7e86c5ff4c22bb704b04d2a0d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZZ7V2547193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0239df8285afa4180901ecbea32fa5ad6e29264864aa7f9a432b3a6cde8944. 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/QZZ7V2547195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c94b61e9c2ffce09621534846576fcbacfb0333a3d1582d3b1a675328aae1b. 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/QZZ7V2547196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65672d0b0e24d46632abbd1565513f8896fdf65e076de7065d0d72c9f99ef18. 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/QZZ7V2547199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457c026130cba665ed539a86f9ac828546fd485428b52336afd2e84cb23f15f1. 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/QZZ7V2547200.