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 0xeabb73ff20c264fed61bdc40738fede3eeb5aae60d882d178ac8d99b9b3f4cfe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77de2f16-fbc6-4f76-9b73-b15b5226df04.json and https://artists.proofprofile.net/proofs/artist/77de2f16-fbc6-4f76-9b73-b15b5226df04.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 0xbb4dfb319492a80a994770e094ff2988172de679c4d82bee5370218618d7fc5a. 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/BGA410801036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf3c03a599a80f2619c9c3504ebe8400042df84ff64ab949eb62a9114ae465e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BGA410902221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173150b0e1031e22def9b335c85f994c49f63e903ef30b94af5fdb61d90a7ed1. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BGA410902017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb97f4f47f7d27475812f24c111459ab4f4bd5f88d667241f3e4976675cde5a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:09Z), 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/BGA411201029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1579938e2d17643d790f793ac942c212f9b3ec953e353ccaaabfbf07ed53f3aa. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BGA411301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1c5d630bef5d10ed6116d8d3f63718315f562131c81e1164e449d7d016eef3. 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/BGZ411800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34826e8c750cef4612524e5224ab1bb5dd7ad33336aac96d84f74aaf24f09c9d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:58Z), 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/BGZ411800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28269415b2c972df04138f24f8fb171d9b811daaa0b8c15d96210f060d9b2e8. 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/BGZ411800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0901ec5bb2783e34a9ebb33fe7157947e346255c9defd224ef66a87ad5eeee03. 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/BGZ411800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db91eb0a077f59c1d82c679e4890de44cecf6f26e5dea44c7c65f73cc70235a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:09Z), 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/BGZ411800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ecaeb73e343cda25f119e4c40a6f0680c6e3c77f3057918c543243784d682e. 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/BGZ411801523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61abf59d63baab42a43e426c336182ae87b1084f750b1e030fffa9a01b44323c. 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/BGZ411801918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8a8d2ea28c55ac4fa43388ad92a7ac463aa99adad2d929418c1533c8e506b. 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/BGZ411802156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6b78dcec487fbe8bf2f9226d5c940beddf7731429616e7cd2cc8d6b51c4203. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:25:29Z), 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/BGA411905073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89851670ecf7cc6947ef7e498de2106ee42f558e852ab1d3554cf89329facca1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:30Z), 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/BGA332400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac44a4d665600464c86160c7095b202271dfb0ac01c7740b839cd61fa23ff648. 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/BGA332400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20361ce82b5af426f628d3b86815a31ada2a326ed2ae9da410fea0fd845b35e. 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/BGA332400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9e16b66983e768ab9a08ab7fedd4d8676fbb2544596fdd036b2fc7d019671. 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/BGA332400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4219005120a6e2470259e860748040bba26af70f84fb351fd7607cd7a16a6c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:57:13Z), 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/BGA332400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf459db65ad5c82dbf471b37fa5fee06db63bef1521f84385ef637d85fae5676. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:40Z), 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/BGA332400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e70f48c1b7ccc6b8144066014b07aae57002f67dd016e148e5d9e40a1e63c. 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/BGA332400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6952643afa8bd85f6c286cafe416416c08597dd7384b6f18d81ee716b7b6e355. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BGA332400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e2db6b559af525a9ff94d80b18d91e174a887906cedc8374abdd1b19d00db9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BGA332400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcbc2b45dedd2f0343f4494acc5eed7bf5a0a042fdbc4d3dd44866d64c5cc7f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BGA332500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95666ee6e9c4c6a064eb64a9f7ff95ba4964481e6a66cf55fe5a160f317e0535. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BGA332500202.