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 0x7daa4d28e9dd9e10a63952ccfcf08be10728383d2c9c695f377846feda97a0f1. 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/48a54f7f-9eba-4b75-af90-d1acffbf3bdf.json and https://artists.proofprofile.net/proofs/artist/48a54f7f-9eba-4b75-af90-d1acffbf3bdf.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 0x1df90d1eba3da3b2bc36c4ad3ff3545658079eadf372ef131cceec8e778f43b2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:35:08Z), 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/PLE781300566.
Taki dobry chłopak, a tuła się po świecie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b966c30f90bc59baeb423c3e6a36b7c6f7f4f7734af863a057534ba08f4e2f1. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/PLE781300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f230a574e8ab9b1d82a84167202e79368288de41b8543bf7cf4ef51dd608a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLE781300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc103fcba32160d7fa6d4e0513486843e9fa6646264b9658222871a5ca3525f8d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/PLE781300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246756d54bc4fa20c62c4afb21e257d4116b730077aab684729ae51b6030b58. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PLE781300822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11975f379521d5d5be249513a99b23873b1a76e59ccafeb01da0d696e4d5b85. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PLE781300823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1f28a2aa6e9a70b33037b64e134b3ff82184be12ec40b1b2718b27e1b04626. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLE781300825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416bfd58cfd050ae0adf533d6b9d6d958061fba4a0d30044b165998811ad60f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLE781300828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa4a021ad441ec6233d44185c1ff46a3bd0ef3cf1becbe4c29c500ab7ea438. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLE781300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e16bf57d82b6a007c1dd68fe381f0e22199baa9f59baa5951444788814f47. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLE781300833.