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 0xdc885f6625ba85305bc8e84c54f13e03c583b50e7e8ca5a1a9da0c7f29c58885. 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/fbeca1b7-cd76-4920-859e-d8d0411f1a90.json and https://artists.proofprofile.net/proofs/artist/fbeca1b7-cd76-4920-859e-d8d0411f1a90.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 0x0d21b9bfd94219524ad10a576647c4a2e8ef595f9fd9fba0a4a6db5cad0128e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062380646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee3be5f9e3054d32eb9a6344724653e6cdec17d43aa43bb68447930d8273ced. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062380647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b65328fffe279e289bd96d08b8f90fe61cd5cfdce43dd0f3830ab7fcdf8a71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062380648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc94c149ae3add6970e5a36398220564569cb4de77e1313ab1c94f72c67d0e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLC062380649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655ef64d93f97fcafadbb76f3687b1630b44627672e3b598877aaf21fd3997e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLC062380650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6a8f27e09b129496da46be3e1d3c5cebf84009b75285fc29a06078445793c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC062380651.
HELIKOPTER NAD BLOKIEM - REMIX Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c66d3ebcf0ae0766d37d389b08609eccaa779bd20b2a025b69fa74c51445288. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLC062380652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d588fbe3756e0908e3f6777a6c90a00ab832013d7c6cb015bfc247bb68abcf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLC062380653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf15b39a3784c8d61bdd3fe317da61c24fa3b58b08a95d00a0405e31679e8cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77de856379f3152e6bd12527294b6e8b66fb7faa1bbb5be9f8d081f9bd59b06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796b4439c122f35fcf00e9fce5f1206837cc897d7f59fee58af164c8c8c257dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8021abe0cefb27c5c9c2f95ce2288e2e225eb26a1eff2a22899006a715d3e7ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLA552401142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bad8844230713fab399ba941aa530212de68567e83252e30334e992c699aefc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56260e5ed4474e5475823f0375ea56ff1d5c87849b9652f769ff9a8d64d39022. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd891d6631d5f64986c6b87859c27494b74c40e20ccfaed3252425c62cd1742. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA552401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8dd0f4b003d30edf7034d0e23683849a41f98431cd04cb632ef612e21d8cae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062406323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34736a7db3505766d76118745f9f6ed0a33b6cb822de38ad45e29314fc25a3e2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLA552401146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7d32e8875488a3a2a8a4101517d0f7573539cc119f5feafaa0793bc9ab55c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb270440cdede56761d31ea02c8b686e39f2a607314295e0f95491f9c380b0c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA552400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd1476eeadddc17452a19d5e4e34624d8f631b59e4069cbb6e35c20182106d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLA552401148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222c087946813e1b566a8e185e9adcc1422016dab9a9fba8e71f2e69051857c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA552400827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe142afa817130874cb2faaaabbf8264768893cee28474b1e1511988a695d7c06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062394754.