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 0x30708e64748d561a67a99b99271134cb44809b57bea591165229a21903ea1f96. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee33e12d-afd5-4e17-aefb-b2dcd5892773.json and https://artists.proofprofile.net/proofs/artist/ee33e12d-afd5-4e17-aefb-b2dcd5892773.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 0x03a01f70f2f7acf7e04e16050b04f7c22de17e673199d0a5dcd3aabc4f6001ef. 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/FR96X2350879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefefb26ae7975782fc08a050c1b13ac6ae5476ac5416a88fb192eba34b6dad23. 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/DGA072352203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa389b38938f073487082b5c638172a1c1cb01c6ee0a818a5c8d14a259726a53e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA092379157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8918eb217bc569f5408d875f99e4604ef80ce40235aa38802dd0f6493e379e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:21:01Z), 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/DGA092379160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f0f692b7106e91ab6e03bbe17f099fc6d851864769209929226c44f0b517ba. 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/RUAGW2507051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c339be7d370c84ccdd2eed51118c00d372ad19b5d8c739a9894ff12796d376f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUAGW2507052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013bd765e6885b1bb885b1de058962b9711d3b9258ca552a1dca5d909ef03f1. 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/RUAGW2507053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c72621168ce16d19db25ba8873a2c777a6f2dfbc033b231908d4c7b6242a1bf. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUAGW2507054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864662ad6941a8da2c5e6f123851a5aec82164f35200a308f49998354922ff4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGW2507055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fcd2f35c1b4984853f51fd092e54b851279e62a463944c13fb9db4d73bf6ba. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUAGW2507057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96040635619309ab5e4c43c15cffff46e10fe177914441f12c9ae6fa97a74562. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUAGW2507058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a663a66b8116a0a0c00832528252afb959f42dae95caa11f7a2d5e31e1224ae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGW2507059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ef23c07e24761118fec35dcb5d5312db3f03abe5843d165b2078644e715f9a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUAGW2507060.