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 0x97d7bfdb3ed6d4690d44c3fd4fbcbc58d50c5f9d3a21f73fe7c7e52b46a55736. 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/3ace1a36-337d-4498-a533-d86f52cb49f3.json and https://artists.proofprofile.net/proofs/artist/3ace1a36-337d-4498-a533-d86f52cb49f3.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 0x123f4a3ee27d3d100492c30aa607e72ec8d040f6858d0fe33b17f00e1535b02f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/HUA791900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2269ab41359db453af89fd950bf7dd36ea5b11dc0a00671b75b3241cc5f5859b. 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/HUA792000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2a7c3ffc0e8e886a5c69a7239a0a5fe58c5e380e31831c87c5555cb56a72d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:16:28Z), 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/HUA792100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1ac09441f821c73ec49bb6fa1e64514312e46b36cf0dd11be32c4dbf0a562d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0L2373009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0eff24fb2693c144212fd5d960c439b42fbcc394d3cb6f4c44e32d1cf14bb2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/HUA5Q2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78c2254c2f8b61d3a45d7b6c8c87b3b145f5d7117329c94c1ac49d8c7b5210e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR10S2462005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ab5090eb86d1e3b2fd2509e8ae57051d415de6e661f1d1340167f36816998. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:11:13Z), 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/DGA092498088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d69ee38484efdbaf3e056068e742bf37ec0eb71928478315654f2e7aaedcc. 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/HUA5Q2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e95eb1fafc49148490b9760e903e883d50a85406154d3f165fe29800124528. 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/FR59R2544062.