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 0xc109c5c90b73f51ef5f74b69016b238fb2b9b9fcdf9db0f63d64bcc50160a1c1. 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/1810b07f-ba69-492d-8a8f-886e14e92700.json and https://artists.proofprofile.net/proofs/artist/1810b07f-ba69-492d-8a8f-886e14e92700.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rodnom kraju, rodnom zavičaju (Oj Sandžaku)
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 0x8ee4ab4f2ba6a23f645e336fd5866d68fb0733a01dcd427baa349dd683a3633b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBSMU9826226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8f4fa032e37db6bcb516be5e619d5ac6639ce1f8a564f25a8d305e50082b7c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BAA052333555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f40d55b5e869e4a233a33a9709262c90efa8adefc0d02c7958d0d0896ab60b. 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/BAA052333528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b1e070a953eba5ac56ec64a0f46439d3eb60f4c47bdcc9815449cc591f4e35. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BAA052333531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761e13ae57bd24463508a0581a33ae1178aaae64dcc75dbd3908aefdbe30a873. 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/BAA052333532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ac078ca252357f8261b0261ebfe9c81f768a67550587cf5332804abf75b331. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T03:24:37Z), 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/BAA052333650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b7575db387b72cc27c4469ba0fc6961534e57ba213828935d6ddf263c0ecd2. 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/BAA052333655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e4f873bb0fe9b5590e715a2f867512f33979957bf860ac7af0debe56936613. 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/BAA052333684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3228e11307c5c1a6af6d44df3f960492e3463de0176507908621fe772b83dd9b. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/BGA671234496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968a6fcecbcf67af55c2481fe9eede79b50c793a620ebc965228ec59d93cd0cf. 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/SE5DA2201786.