1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x693c72f64eb70b44dd63928b5606ed041033b422badaa14c41183f87d6ae4364. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af4a2748-0f08-49ae-a499-4cbcd74b2f3a.json and https://artists.proofprofile.net/proofs/artist/af4a2748-0f08-49ae-a499-4cbcd74b2f3a.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 → block OTSBitcoinBlock must exist at that height 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 0x9b6dca408be92735029c19d43e3a28f487c09c3f49992052f40fd55487fd0e92. 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/USSP52328038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4de61a1df396a7bdeb11d01613132a6f204a5d7de7e2df8f6f3bf3061e1587d. 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/USSP52328041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacff1b46ae6b3f89e790b89583043baf867e560ec9ddd822c37451cd39352cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USSP52128034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e0f9c759423b36b75e87a683ea8e02311ae96cdfc4f13aa95772caf250a95e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USSP51828022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940d39f67a5f7f61819e525eed9dd3ba91e62aef01a269cdc4e9564d597da2e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USSP51828023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50d9214994387befee39c85480447e227fe096e62abbdce2c994e797b3274c. 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/USSP51828027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466e8f27d169c256b0c4487959ff084dc159f72df235091a1d53bb7ae7f64f92. 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/USSP51728017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40a3429042fd1c14032f9198dd8e2376f5bc4448cc2e63cfdd5b30dc86bdfb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USSP51728019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c7313a66bb0409889cc8c12db1567c9b883e39ef6c7b0ba5bc2293a6fa10d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSP51628011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf262afbee422748c57ac61321b76ad2b8fca24061a7afc4ba815fc3c10726299. 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/USSP51628012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393125af21176ca239c59070ea3d74e796f4ecd56a43dde6b8cc8604429244f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USSP51528005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac53359fd11bd7e69af0bf95d11b27f222692bdb77fa2eb123e96219b61dedf0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USHM81371984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0253cac2e1bc38ea0020c9bcf52a5fb56f580e8e8d9250e282e101cc20c02. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81371992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013331746d21e0744ab55c26663f7f0a5616b813e132aa32896eb594d39e7fd6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM21210986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7280c894449b324777cef0620d34e85e9c2d54c5f135eea643508e0753976d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM21210989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f37112dd23f58f4d3b983f1a29a83e3afbb3ac8d60075186f75f123d025d44. 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/USCGH1474170.