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 0xfbb90c560d1f16e3236bbc22b11dbdbb0e78bbec5814c1a1a73c2d7277cf729d. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58664c6e-fdf5-4377-a5c4-c5c64d14c347.json and https://artists.proofprofile.net/proofs/artist/58664c6e-fdf5-4377-a5c4-c5c64d14c347.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 0xcb27e682c2668b9ed62a58e32261aaefeefb29949ced35459746535a85561d7a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:48Z), 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/QZWFN2340082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2667248c7a06c4c89f5849da7cbda37620da152dab25a60b86d4a5d001e2f836. 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/QZFYY2485992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941cdbc5b221c3f0bf05450b5cd7792e69fdf19b5b7815b194cb6222f7b14c5c. 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/QZDA42496444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474c247df803a1aff02efc3b431b07e7d95efa1162453c17bea62f5c51d44465. 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/QZES72489331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b77743f7d0b583e161844ee147dda987a3e2ea334e135fc9441ef00d625329. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:31Z), 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/QZHNB2475607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00217c9e089d94555b41b20f28e1aca0066d5fd39ddafe77ae4096529dbaed07. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWS2479656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5435905c233c478ad9b00d8019c4b37bea5770cb05a9018bf2f8133cccc887f. 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/QZNWS2479657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f95d21a02af1edd1c2f0e98472b3d96fd15913c531fce4fb74a8a679a5b6de. 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/QZNWS2479658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6667187aadb97405ec4442b113e2532a9d426345f204ac198a1aa85221a1a08. 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/QZNWS2479659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe57dc13f748a917693f34860d4d5b8c6e5392b397a4acd0bfa39cda3804684. 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/QZNWS2479660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e3e25bf5ee817a47886ff32c75daff6a749bbb943b6796b9d6f7a89c13d10. 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/QZTB42487240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c16a2f874d219f5aa204bd552fad2e99c07242fa9780885d358d4cb8438c5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:36Z), 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/QZTBB2489963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9824aba3ceaa81845ae3b47879b5e1cd8978376c573f41351cf02ed051ef1c0e. 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/QZWFV2421238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe819037ed000cae9018be3210c09d851861efb563473de50495bd85facc27e9. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZZ7U2433535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6947449092bea79055108eab09957c583163a1d709f6608368fca4925fba84c5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZZ7U2433536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dcda32779d255b5454644990b70a0039c0be2ee3aa5e68b634c77c2ad9cf11. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:42Z), 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/QT3EZ2483075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f611b5002ec13ccdf4d1748fb59ca7ed6bfce9d478af73f5e507686a3bb205d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:28Z), 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/QZWFF2512110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ab5f6aa599e497a91bb6eb7ae893db4217f1306c14397b63b5993419664b70. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:19Z), 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/QZPLS2570841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02531a2d32a3c5dd6a2c13ebcbbf757b2cf32e2ae020a0d30b420e9833b35650. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFF2512111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f8c2efa6e2d3bc7e789cf3ef1d844c333b3e5df7ed40a4cfc90ae3e27809c9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFF2512112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3113046b557e1da9eebe31b4081bfb17df84adb316a953c4a54a3df0a1f5d7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFF2512113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a53077d6f9832eb5c9b9e0001bd77cf0aa28b6abc13e81a40d2fdd169dd37e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:12Z), 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/QZWFF2512114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d505b9c733d31193790f9361699d04c0dbe113314cd0442811cdbcec318ae. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:36Z), 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/QZWFF2512115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a80eb509ab273db61e3a4e05d91460ac7da214d8c557f82b0e6d7ea0e5f2b4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFF2512116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ada362189acc78b910842560b9bcc3f29073bb4ef58a780d2be6dbed2efef74. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWFF2512117.