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 0xd33ea986ab10df606dac241587cd75e871e8132b714b32e8df09cac3ddafc599. 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/125b163c-46e1-4732-ad83-637596066189.json and https://artists.proofprofile.net/proofs/artist/125b163c-46e1-4732-ad83-637596066189.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 0xf874f816f7c694f6b053824b94cc871915e44f2dfa231fd81c08f92c09e0129d. 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/USCGH2370622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11251c8204576c8342e55f4560748472aedfd2314abb50d8e5889e039f2f178c. 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/USCGH2370623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb0f4a584508be4e0dcda6f55d434614c71de7a21177ed0cb0de55b15c4eda. 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/USCGH2370624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e82fdd0bae73a65c6e52ad80d1042f835afeb86931c128d3f85d8b76f14260. 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/USCGH2370625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fcfcbf8d74ff73b3423b46035037588eecd780672d6884f2b9952bf9e4dcaa. 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/USCGH2370626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a5b1f779d2811e763bc62b9a2fd2e1955782f2ae544269b520c4191ed04bb9. 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/USCGH2370627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86fb849e4320564895c38fd6f39d3527425fcfc368b47902f4a23798e316ad4. 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/USCGH2370628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805346e34c2c8d9bee51bb842e4b189535e19f2b8975c6c77cf548457fb24de2. 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/QZVEM2398937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b024aca116c0b1f6631ff21cb46fa9535f5dcb7acf3fd424786fd49e1e0ebb2. 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/QZVEM2398938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc2a4099ed50bbbc9928939f286adc37f06b7162f533b599424fe909cd05981. 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/QZVEM2398939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40343c430fb69333bea429825816f48340b009d10d11c91f79950c2d0d4b9570. 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/QZVEM2398940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688afbcf64799bca94ca6a8703401bdbe97164ec31dc4d92e0ebe0502bfbc013. 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/QZVEM2398941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d84687e4b0352046dc3b64058084a4c1e5d5017f8b4b260a16e70f135899a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM92218580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a05c0cb56ee0f28b74dac4ec186c66a539ebd2443ab2690a56597f53166815. 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/USHM92218581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265355ca04c15206d30b40a12427b9123bdf6279d5a09d5d32fa81d0d08db75d. 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/USHM92218582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877c4e856c0a906e5fe9ce8e896d689826009d13369738888c6d4c101a5314a3. 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/USHM92218583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5200cd8d604cc88fc68abbb882eb355f439fdc3045bd8493e214be3acb3fe6. 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/USHM92218584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170cc68784f7a1d8121a451cc17d201db72059997cb9ee561d7308ec92633d41. 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/USHM22236175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bed8add02a99708566b03248640de4e6fce434b188b7870e210c1d09a89952. 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/USHM22236176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d67bbca4724629e0d042b8a01f440552538e8e8c65991a78f9509d154eb28. 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/USHM22236177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecda00a4d8daf69528c119d92d435cf58c29ca95c99cc56cfd51bb26d0996997. 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/USHM22236178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70061041f4d5610c66cb41da2a53a37cb4f13b3415fcdeb6233414a31051504. 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/USHM22236179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459c60570c78d5bc9182f770e1762a77209dabb8f804ea104205fd6bab2776f9. 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/USCGJ2236704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd6ca2f8b50095df5dd7e8ef2912bc855ce54091da94079a8d160cf302622e4. 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/USCGJ2236705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ad2366c96d7f6eb90fcdf7504e98141111109b503577ec8999070a2ce5e8c0. 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/USCGJ2236706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3417f0fea5cb57e1b520714224d91b378eb71c57c2b0d1d195453374eb846eef. 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/USCGJ2236707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c2c54655cd82bf342be543123a578a0679c154be88229437ef0cb4efd82517. 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/USCGJ2236708.