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 0x62866a50e4a5f732c8d64a2cf5689b4815f851cfcd299df59dd9de4a90f74d7d. 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/9863e832-bc5c-4748-b327-3cbd98ad17c9.json and https://artists.proofprofile.net/proofs/artist/9863e832-bc5c-4748-b327-3cbd98ad17c9.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 0x3829bb236a9ca8ea7b57cc89803182f5f1b404e9e05fcc0ca35e7e7273dd5c27. 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/FR6V80234607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314b63905dd4e4f8610fd69d2abba56a2763374c2a7e28a8807f5cfd46cecad. 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/FR6V80234609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff80125ac9ae85cc4627716a892add484cd2694b7c091054513a2a946576ba8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6V80234613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06396f5a8a1eed75a83c78b9a9fac63209755e7949cccba886ec55ef6e8f62e6. 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/FR6V80234614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b8aabbb826474cf25bf710af9a15ef0429165a589d38307b8ac5463eda3ac. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR6V82393947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f1328b539dc881a5b26f624705d35251bbac68658a4935cd585341a921039f. 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/FR2X41540841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc5ae50e8ddf343d65250da7d0b9b6cb898f236db7ddfe4bcc7af6265e04421. 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/FRPCQ1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b9bd786b7cd8d41be9608afcf907f76016c4aa5f7e7bf144a6b8e828d8198a. 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/FRPCQ1500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a053685e944419790897fcdaaf4ae1ba01d1ee453e28670f68fe65b33e3bac3. 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/FRPCQ1400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ea5702842210cb59b3f6c0519c2dc4300441bb29642df7a6716c1a272ffbf4. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FRPCQ1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345b5888a17bd93d753b26c1b1962d47c08a310d8df5d147d7f0f2cd0363384. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR6V80198452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f518523b582bfcfc057d8f6c3d2304ae495515255fbbda5cdca51736f0415d. 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/FR6V81578502.
Excuse Me Girl - Munna's Music Urbanpandza Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde00c2416c310eee11a78b3ec018da846a087cf968ea8e50942e703f4854a257. 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/DGA092213979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145c06b94b2a16d0b3cb08b7fb52104b19a27532797211fef96167774872b7a. 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/DGA082241054.