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 0xe0c88b878393fc979a72dbf69f2e8c089c50882330ddd7dac58407472f6f994b. 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/22e3cea2-5e24-463f-b375-b98a2b772251.json and https://artists.proofprofile.net/proofs/artist/22e3cea2-5e24-463f-b375-b98a2b772251.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 0x12097e181a7880f8e747d3eb5218ba492167aed0cdbe2d46cb6ee0705f665b35. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEVY81700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43552262dfcd097fbf08e2b4815fa463c7f7943c0e3bd2d569f033987b6d9df1. 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/DEVY81700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef90068f650d4a3d49c5d291f5e8d509e76340e1ae194570e48e7b9daac61d1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:18:13Z), 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/DEA811800520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fe4b46bb05552e287b8ef4c230209be8ebb0542882e9485659877920455330. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEA811800517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef90068f650d4a3d49c5d291f5e8d509e76340e1ae194570e48e7b9daac61d1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:48:26Z), 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/DEA811800520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e3de7870b9a46a2b8b86f9e974fc00a9cc148b5ab071d1b758dcbf055da77a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA811900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323786f662a0012b01aece4801e3168442dfb1b71461644f634ed08ee660547f. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/DEA811900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65ff2584546872ac7080b6dccc0baf2061be4e395b39e18904deb4e934fd419. 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/DEA811900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8066e274bc05e7a3267d56c22fdcd1305733f3fd0b23fed6b50c46fd35c3f6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA812000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc854527aaa8867324ab893bf3cfb1e7201eafb165b524e6f0401e051d1b700a9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:06Z), 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/DEA812000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503ba8048f065a567f4cdbf9568b7434e7484368b2927e1cb217e38d7170ee78. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEA812000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce53b52dfebceff9f78eac2d4d9833c1df3281bd53f8356f29e56d04e2183aa2. 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/DEE862100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311facaec52f4a432475312abce735756ac9ac63d3bfbd5c07e6255ef1f0b906. 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/DEA812100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00a3d59261e0679b2b5733ff563b409ee13f3030432240769c69b43d812b682. 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/DEA812200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2831b135b31b7e1fa28cb93bcaeac9cdbfee5506de2495ede146a3ead92a55f. 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/DEA812200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43779a8f2b29cc2d5bf3cb56def7d9096690a9a3689960c3f476abf3bb7e639. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:31Z), 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/DEA812200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95809a916301e92dc9101578758922a7df49268f8b3b806fb8c5bf45b884e9ae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA812200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8288cff1ba167f4c0bab62ed41b2f7a12be220ba10e96854ab77e3fb766a18. 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/DEA812200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00a3d59261e0679b2b5733ff563b409ee13f3030432240769c69b43d812b682. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA812200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2831b135b31b7e1fa28cb93bcaeac9cdbfee5506de2495ede146a3ead92a55f. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEA812200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43779a8f2b29cc2d5bf3cb56def7d9096690a9a3689960c3f476abf3bb7e639. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:39:01Z), 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/DEA812200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c539a79a5efcc661d397d16c3871aeaee591b506bc0e4ea716102ef46750ac. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEA812200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c623a82c0b24d092da1f71080f0d1ac3b727e778cb5ef36f0db015ad1fb97f3. 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/DE1CZ2300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e020b0678c119d992ae972a33e62ba1673e2c609b79351182c1e0c4097b5c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEA622200743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3984eafbcd149bd828b3b92205510fac5f26cea9abba525f071f967544da22e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQ021803871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b19becd5a10730aa92457dad4b55acf0a97a614c10ba35ef1c875e99c199767. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA622100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502bdc6c4c608c800cacdbd85a51efd73a31062ec7ccc14519761469d8059a59. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEKF22200579.