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 0x1f8adfb983d0dab77423dd68c6eb142383e0b64d9cc3f8632aef7b4acc185167. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9645914-3b49-492e-b386-cb0180f904ef.json and https://artists.proofprofile.net/proofs/artist/e9645914-3b49-492e-b386-cb0180f904ef.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 0xa0b9ed5a4586d2c56cb04be58403aa9487db6610432727fa727db3d3ba96d932. 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/USCGH1710241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924bb56a1bb887c7fd5cd4b1e2f88dbfd30f2f68240fbfa8db5fa15e3d784fc5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:16Z), 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/USCGH1710242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a586ef2bd69e25e101461cae5319341fbc0d9dcbee579e3d563554b8972672b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:04:36Z), 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/USCGH1710243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc922107865500ee362ab17256ff7ccaed4d70824d99e7ee6f0db9be84d2d37fb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH1710244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4460376b1ac1f3f557657c1b730df6e38070a5f2fe2c36181797d52a53d0a5b5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:11:40Z), 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/USCGH1710247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63781e2e30b9dbe9c7a99702a5780ec449c1d5d0b4239482ae246d048ae36424. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/QM6N21841709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146bb84a8b173431e1577bf1a345dbb302a908b1d068f438a8efcc4291c413d4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM6N21841710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e16a57826a91eea385c0266990bd6cd606fa909dae03cf9caeae2b27ee8f03. 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/QM6N21841711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d479b55d6063704e984a6656a0b88ae98c29f65f54b1d703324bbb9a0ac9a97. 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/QM6N21841712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c842ca3cd06959c84e65ba5a1bd353f311c6ecf17d9d68222175c71bb59dbf. 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/QM6N21841713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160179de8a0b8d8d4b839bd5bae206ad5a75e0c9cf63403233536c3eb8b46ee. 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/USKO12100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2474fa07dac4c6e08ef24c55bb6a8f50a28a011fe2e1f9b60cf8fc646c70c5fe. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USKO12100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2060568ad9c9f5d40cea827c95990a6eb152f384a68682b5a755679ce1f7597. 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/USKO12100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb36031ff995684a71257beec94c61b28057c37ea99c2d75a80ad8a402ed162. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:25:56Z), 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/USKO12100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a4d0f4f839c47ff0b54e4d5e3b1f13805dda4deda0118f9c24eb5b30f6457a. 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/USKO12100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75319453a06f9aa60aea73774bde9636966d936008c44da9a357df0725b95584. 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/USKO12100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d26f01a6a483587087526ff61e4c8f17520a8f363dbeabce5239ad2e9e2b6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USKO12100070.