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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fe8972917305473ff61f91f2e015adad3dc928920ab4a580c9bec7674453ab. 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/78970497-cb11-411c-9fa6-1db9d8774c63.json and https://artists.proofprofile.net/proofs/artist/78970497-cb11-411c-9fa6-1db9d8774c63.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e15a4b79e032dc7c12d5dcf3e18b232818dbdf76d91672d007dcbbe0b22a5. 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/PLF242210887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72712cabf04e17056b80de15fd000dbfa5fb71d34ce604cbdf74b6f658ebe482. 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/PLF242211110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d00eb2f86274168ac9e12925f29b887cd13e504b948ae2702f0f502e9fb28e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/PLF242211375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83b724af55f220f312a0dd341e42a45385fbc6f68eecacdbedec1d2f54b109. 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/PLF242413366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab15ec69bafcd72eeaf37d2e477fd3667cdda07c1233db2cae80a93d5bbed349. 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/PLF242413543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5068578d17a3d95480f89968eac1dd8157102ce256f7100d2cf020e9014ee2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLF242413899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d8e824dd2c6a4f7ce3bd6106e295b43149c6816fd4260fe7f2094305d2c49. 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/PLF242413972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab59a2f9e584de859f55987821420c09495154bdefba3ad4d3c209645538141. 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/PLF242414030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce029b317cb6819a2e05b3b54dea32afa01d47b6a71ab4cdb779420aa5ecb8e. 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/PLF242414025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab15ec69bafcd72eeaf37d2e477fd3667cdda07c1233db2cae80a93d5bbed349. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLF242413543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83b724af55f220f312a0dd341e42a45385fbc6f68eecacdbedec1d2f54b109. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLF242413366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5068578d17a3d95480f89968eac1dd8157102ce256f7100d2cf020e9014ee2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLF242413899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab59a2f9e584de859f55987821420c09495154bdefba3ad4d3c209645538141. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLF242414030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d8e824dd2c6a4f7ce3bd6106e295b43149c6816fd4260fe7f2094305d2c49. 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/PLF242413972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de91b94531dc477527dc527a128a38229fa9b527cc4e507ad8baf51264e8039. 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/PLF242414031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284021259c8b05352cba70fa4c86ffa04bf6e7fe066afc459e1edd725a1108fe. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:03Z), 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/PLF242414032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1496cfa39886c68b2a063430e8a4b9f740c71724a34fd6360ae2bcd0a2e0bad0. 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/PLF242210557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef08093cead64553fe437f2d8a5222e522ad26296080e9d55273d5612613cdb. 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/PLF242107622.
Cząstka siebie (feat. Obserwator Świata Faktów, Dawko DYM KNF, Ponczo DYM KNF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42dad5ef200a0ff22e913c44ac3255a6e27d2be0a60ac713480834c96be0a06. 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/PLF242007048.
Odpowiedzialni za przekaz (feat. Finu Dym KNF, Obserwator Świata Faktów)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac4ae9b68cf5384ee8274f65c7bd979ccd620bb80a78b7c614acd625cd13311. 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/PLF241704991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f78af49b7d6c6d21d27efbe772c2271e85642fce02de475975e53611f8333. 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/PLF242209417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca3433558d17b208592c922c2a762e720444f5649c008ee567533bae834739c. 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/PLF242209614.