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 0x6346a2177730fd50dd7e39dc66ea4bb8ff1dacd0e1a3136f2d1aa86c39ed2fef. 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/642d7685-98fa-4b39-94e7-7bfb01318a21.json and https://artists.proofprofile.net/proofs/artist/642d7685-98fa-4b39-94e7-7bfb01318a21.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 0x6d8aeac27169375064e7c5d6b755fd9b27dc5007526671019f1de503bd70c397. 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/USDY41904124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2029d81f4b9eb8893511fbddeffd7968bf8b6833ca0778e6264d99b823fc76f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:06Z), 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/USHM21987794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2dc1914a9f0eee879665fa8960e4ad8e5db52116d7752139f31da50e741ba8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USL4Q1962625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6824a0170bbc946331e09d1d31a6e6e46ba8f8969b0875272489e7bebb6b5fe9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USY282010207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2dc1914a9f0eee879665fa8960e4ad8e5db52116d7752139f31da50e741ba8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USL4Q1962625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7506164ad734d1d825d82e766551255d86ebfb4e1592f3df5fd2f51090c75259. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/USHM82190914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8671505760bd658f711e9a15ff369ef111e9df919cdabb5d2eaeecd4dfc5a2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USHM82190915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356065ef38bfb0cce616081a3562cc9ce997bc26da02288ec399cad4b58599d7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USHM82190916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49334f6a01adf53aee4ac6c548f3c668cf469c3389d5b6d3fe6f758c46ccf788. 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/USHM82190917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e5f967c2fa432d6d1d988102c2d7a98ab1a353372a4fa36012b3f87c72e393. 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/USHM82190918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c830e1d8b1ffb9dba970fd082bd91a09d0f6fae3123f3019dfc1cb8afeb009. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:48Z), 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/USHM82190920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f90894f2a7c4910b13cb36d56ad84d694b551bb09aa67336481d1855a2431b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM82190922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d3a9bef146f34335075527a76e4730b691f6d12f4b9a5055ce4137483d800. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USDY42273059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd63aa956f6e520eeb72e7d840dd991a444a0cf99cf567167fd21dbfb5de4e12. 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/USHM92231733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641408176e85a7df64973dd2fa341f2f912263254763d12493463d75da28d5b. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/USCGJ2395641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afbe922a7687209a198b69a9fac7a303109e07e65782789a5af9c6652e8fe02. 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/USHM82306965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e49dedbc85a2d248a989175bcb6d36231fdfff8e91fd37632504d3d5f42dc0e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:08Z), 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/USL4R2331237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051eef3e676867f8c323f9ef5bec6f1f2f771cbaed0afff9f4fdbda904ff2bf4. 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/SIAEW2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ba1b0a9a413d10078cc8d75a8b894955acffab8381935652e4baff243e4d75. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:53Z), 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/SIAEW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb382d1aaf1b66a269e856e9b6fd9d40adfa54bf5a2e13418016e0f596f5366. 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/SIAEW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cde30628cc7e74cbce7adf274ed4162b113d61307877be711b58f9a609870b. 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/SIAEW2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d3a9bef146f34335075527a76e4730b691f6d12f4b9a5055ce4137483d800. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USDY42273059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbae3423a6607d8b5990bfb65798eb8d1ed5de4ea3f376b88b22016beed44f5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:17Z), 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/SIAEW2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a23c6035f449b0b5c4270cbd5299ed9b6f0eee22951967c45c9b8420ebe211. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SIAEW2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40e81103c6c85574728d610bac3a8e6f516d4466c23690c11ebe8c8dd94b4ac. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/SIAEW2400007.