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 0x4152cc33f38cc7a4260c0534dc60cf8acd8b51b36596eb3dfc84a70c20289777. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8c2cc6f-8c8b-4049-a6c0-244a9f799078.json and https://artists.proofprofile.net/proofs/artist/b8c2cc6f-8c8b-4049-a6c0-244a9f799078.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 0x8d27606744c6cc6b10a7e4010a51a7e8f5a641ec9e591bd4c1af2a7a2f99eb90. 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/TCAHK2350524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbc112d92401b531237818079621b8e6de8313c195d63b88293115e17091537. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAHK2350528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f00ba120ce56f19ebb15d20afa5d6b8b634057252bed700a5661f8cb986a796. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAHK2350532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cee78b7baf394b52911bdbef36b7837b36363c357d77d6eb12960ad5793c22. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAHK2350537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964e6a64334e3983043c44d741fb1d9a4c793d191ca8cae09822194d9647461. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCAHK2350541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb85b97e589081a4e6eb25a3c472f75d9425202f4ba4da9efeef7e6cef00bba. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAHK2350547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23d7e3b382e66ffdda4649f03d1ce7c78befc87966633c3a2054c607bb87377. 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/TCAHK2350557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5c2b5afdc03ea212a9ae976ab385c9e0b57c487e8d2d398968ec5daa9feb15. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAHK2350563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d564bf85dd964c2e0fc091536d04e8aa4d6543bb42a72c761e0436cecbb6a3. 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/TCAHK2350565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b12b607d36c543bbd8264782079f5819f559593de2019938e818e46f342b30. 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/TCAHT2493301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb79310bdf72df3971fb4fd27618e191521f97e0450b7489ea8b5b609ab006c. 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/FR2X41591144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1367da97642a18799f0b66319868f1183d66a9475906517eff9486175bb3062d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADP1879375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53f4ec3b3281f9cdeb5d558ff221a0fff21a33f3c5137de35ecf924dad8b47. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADP1879378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ed0d7ec5fe9f41ed8497d5c8e21e65bfd65a4d47aafc4a7f7d6139c4290044. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCADP1879379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15483ce9eaecc6752a454291c5e124b7c12ccc1cfd7c9052c16aa75aead5b78c. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCADP1879380.
Intoxicated (Jocaso Remix) [feat. Petra Sihombing]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b6d49ed78a327e987b2a226de937a89b2e24ac6ee55bda231efc2a301bc663. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADJ1758319.
Intoxicated (Cvx Remix) [feat. Petra Sihombing]