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 0xa20f8c0864f2f05291820556a843f8ebde43b302f52e1132556718f5432fb4e9. 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/bb7e94b8-143c-4124-b2a2-5e24ac40eaae.json and https://artists.proofprofile.net/proofs/artist/bb7e94b8-143c-4124-b2a2-5e24ac40eaae.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 0x960c010e61bce7627e5d820d296a5b404c1c2a2452f2c7ceceeba84744cbdf96. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/AUXJM1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c32a8bb2d89f1fb4a308053ec96a83f06d18ed864e78d00e0db770c2b55581. 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/AUXJM1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59dab7688bad9dba8878c3679c7d18ff194d0d3568ccd7ecf7b5589ad2c3da. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:13Z), 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/AUXJM1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393382bd004dc02f931d341553094a34bdbdda630ea22b3d064d23cdbe8fc344. 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/AUXJM1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec951af61460d5c03bcd501a1117337f95ec123a04ad6aa6f4ebca78a474ae0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUXJM1900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ef8968c6ac9e63e532624c737a80eb703f4bd277ff006e907b3b6167441129. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/AUXJM1900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e3be9f2f590f1588a6ebd91628f7f6e584e82ecae6ce0a8b1d306216d495f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:21:05Z), 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/AUUM72300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e3be9f2f590f1588a6ebd91628f7f6e584e82ecae6ce0a8b1d306216d495f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:11Z), 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/AUUM72300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9248a898f4cd05d409b2be599e336935c364444db223b8648c8545d7325022. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:32Z), 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/AUUM72300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3337330a2231629d5c01cffc5c4f37e487a0543e1540ccaea3573fdd033ccca. 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/AUUM72300386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bae60442be67647ec5a7ba3b566ee0a7aafc7c2e09e03cd38aa6a5d7bb05f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUUM72300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1358274dc2acc76b7314d9a7291e633a56b2fdb342999aeb0fe490a43e7a1e. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/AUUM72300391.
Alternative Rock 2025 by The Circle Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55439367fca316368751eecdb59a4426e8c1308526f653e1c896d5c6ca209858. 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/AUUM72300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b29fd9271941f56ec244f55ab2dc96cc43fb2b1323038771e9d7f32339c6f. 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/FRX202245620.