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 0x173ef2fd663c6862566d381eebd35e8561d8d0dce7ff3ba406a6fad004071d81. 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/1e45a9a7-315f-4f0c-9769-b7e7d8d4048a.json and https://artists.proofprofile.net/proofs/artist/1e45a9a7-315f-4f0c-9769-b7e7d8d4048a.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 0x8f9ab8f1ea010cce78cbb9268572ece9d829508ec4b31223c6e101a1450fb7ea. 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/BRTRB2078965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0bb46c19eed4c541a57ee74fd71dbc7f71f5f7118f76992e1158d56ca70d9c. 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/BRC4M1700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fefedd64d1761a0740a98736d14f0d251a1aef30a693626465a4b2c7a6ed239. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:57Z), 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/BRC4M1700236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be487f02582f254180161d8eaf26c36d9538bbd6b6e8b215a10a587f87c0587. 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/BRC4M1700237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c81dbf9c4d5a2b56139eb65b70a5b101cdbf7b410f3bf1000fe66c3805de808. 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/BRC4M1700239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bf00f4b6f208f23edc0e88a0c8d8607694848dc8037f05b7d04a205994033d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRC4M1700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe91e0cdc05c0ce8ea9a9e94e64bd8142c57a2de8751efcd1c4cfdc3bfe46df. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRC4M1800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8583f96111e8347882a8bddeabe0d1df4b8715f6934c3531423af50ca96c6ef7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:55Z), 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/BRC4M1800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2152d13d66a62fb0941ffef7a2ef79c31be5e00f573425c29138aef065dcb983. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:30Z), 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/BRC4M1800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f889c415f4080aaa8431511432cb8b680cb3d6686ef8d35a2eea4f75fd7069d. 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/BRC4M1800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0ae78948ef8cc722837ad2da1770abe584f3c8421f0c98623ff1302eb9965. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/BRC4M0500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e615f4f62e271ad48b1286327ea82681a11636cece4497f16d06f2c248557cf. 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/BRC4M0910279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f907fb7ccdb215c6fde25dcd8570c092720b0de7ee707e9fe037a20477bee38. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41858164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21486460c9384b06b1ad6b9ed18629bef64e731361608725ff2d4318364b725. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR2X41858166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12063a3975d4dc8d4a733e0d1e202e7343428e3dd0e05689a2fb1d1e842936e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41858168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5f9ce2ca2ba7867045f70c3500ef792071be79b702ff775e0cf39fa7cbd25. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41858169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaf539d2d4e265ee467c709649ff63a83a69e689f6b78a22c13d74a155b3ec8. 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/FR2X41858110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882f7a087faa0e85507de120162f51fc50e6bf670408e0a508c62f80d9ae7f99. 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/BRC4M1901182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee88aeceb5d28af2831d430ca0b9828ca30eae1bd9c62ec1525183176b66fda. 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/USCGJ2162704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef894913cf6e74f08379b4a34bada66838c927040d210ff197566025ce50290. 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/BRTRB2078829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e060617d088cb466b0adcbe0de933624872e61abcf2d0ee5869e69f4b7e8d3e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BRTRB2078830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce192e2bf4fb1a40490e82b7ed42a3db7edf9e958b9a30c05a192574f3576fc5. 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/BRTRB2078831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcdf81f6336c11c0e4b57b4c5ca7fbfa4f7b0c1b1728d50cb95393a14b7b973. 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/BRTRB2078833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde333b3205cdfb5350e0d74e48944fb51e792328e7448bd9980abe3c0f40336e. 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/BRTRB2078834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6b6d44365d340cb99dffc656119ca28921df9c02d5678cfe26ade1ed7620d. 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/BRTRB2078835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8003d873e5cf1cf7d25a7937b01359b974c6e776f89bf52fff844cfc29629720. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BRTRB2078840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fec485cc5e9b2167753f0a9c29a9e7fb4fa1ffd16798f7f3ea768fb440a8110. 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/FR10S2396921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a95398ea4e1722098947265ab404dc145cae22137a3286a6059cbf3bcff97d3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S2396923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43843c4c4598f1b27427cd1e7e0a3ad42b5d65e4a3249758ade47167e022eb7. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FR10S2396925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc15d5b35ecb09cb562c276671eaf18480865f733a6632863ad2b394b7d34cd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:11Z), 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/FR10S2396927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ab31a5574074dd667d8669766534a17437e298f575b029ef349e0c8ac8540c. 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/FR10S2396928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddc14074c18eb73da5b9786503b647733cca720bc65864f37013aa18b983cb9. 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/FR10S2396932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19740dd92c00886f17b8b57ad794c596e6d0a8500d3dcecec69aed26a05f4f4. 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/QZW9K2456815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd2acecdc220f0652d8380ddcf5564f56e2247e8b74ab8e6685f50b9e80ff3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:53Z), 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/BRTRB2501920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c3c9eefee5f2de5e2824b96d8b8a2b12fefad386fc1311568cf2042d0ecde2. 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/BRC4M2500025.