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 0xd7929fbe34d6fd26e9c7adb6c1d54302db9b81b6a954aa322781902a8161e59b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9bd1324-3276-447c-bd0c-51ee0057b79a.json and https://artists.proofprofile.net/proofs/artist/a9bd1324-3276-447c-bd0c-51ee0057b79a.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 0xee8e899e877289ec02fa8fab1e315fa467a95e43bc8fa40721e55c617fbfadb8. 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/FR59R1752208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5170fb0695901ccd2c11efae6f076aeb0a955f407d9b353047baf1ed2774bb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:37:08Z), 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/FR59R1746276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90650f2863d6a26eb4413fb65984d5b0598c3c58ade6377ee57b8a3e702e66. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX201647941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f350fa06e4316781dc0ce83ae0c3bfaadc42d03e24b03b5c42cf2d0a2300743. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/FRX201616126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffdd566357c6ed5fdc8f6c724df9a95d585ed95475a2f95bf340d9d60d0c5b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FRX201616133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cece913f1f20e3da2aa190b87d58997704de7357e904fb7a39422502e9e371a. 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/MAA172100377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f2ee5a7589628b83b6e2b47f0e2658df228a50201b71991c957ac7e8881b17. 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/FR59R1752212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80775e11abf8b7db2bb32b7576b742fca5707b6af9859b41006a79f9b170685. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX201616135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31c77a2130c59d256766ba490e5ba6d02e65c653f1d7b10fe565c5af4d67e8a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FRX201647942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90f0cab2395fabbeffe5f4eae5d1c4667ff652bca2779c9b9a7221043f8dac1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FRX201647943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc501dae674146d0fe22c1143155de8112a5b4e82045f2f7bc929b39929b02f1e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX201647945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0824ea1a0632e7b9d1dd236ca62749dea377d465fb4ecd0313ab64cc1de3a9e1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX201647946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23a80cce7bed51ef362da6ead1513aaffc77351dfc5f105fb4877d92ac1bcd5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FRX201647949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a92cd30e9ef917e1445b93a176ee323250280ec083f8b0c24cc5fcb765702. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1747970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a659474f2b80cbb0ca68a04e59f04b16d09c969edb15004b4e818c95bda6c8. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/FR59R1747973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f6fbaabb39ea9f20c3fd620defd34476fd382a500fb9c3a5eef180aa1da6f. 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/FR59R1747974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf7bb991bf80b262cb6de9b10ba1eca173653c4d940adbbb7fe622d4b9d95b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESA011987768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7686b285c9618c6ce62df86b5e2aa9288e21e8baceafcca46eafefcfdd304787. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ESA011987769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff257b68b87a54ad31120b514df8f45f7f8ab0a56c30aea4c50a0617008626d8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:37Z), 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/ESA011987770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43b22085142f9160eeb31d5ec8955a9fbae86965f6412f39757b11a5d3ff347. 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/ESA011987772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc66a52fab80fe18336bd5f2b228f4b47122400b3163be047a4e4da52444e6c7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX201616118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2985eaffe543ce955b62a22d815607c7b79d06e608aa91136d52078a19b80b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:46Z), 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/FRX201616122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e58e3bd69c8a505c618893f76327a18bd1fc042210db2f3ab9de867b0ef294e. 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/MAA172500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d11aaecca999a0bee23b328ad78982afa78edf53765cf4fab2091e765cda8. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:41Z), 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/FR2X41558428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f44fe18da0b4314ea97ee05ee38490fb0a33edb811423a84e9c92f39fa9610. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR2X41558429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971807dd0a2af81bf2d98652e0d4aef3965407be4c3da5f99c6b7eb988161387. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR2X41558431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c824965a18dac2fb1c00c1551d06dadc34d0e12817385e2ea692bbcbc6e55c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41555508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc27d4181dd643ae30cfd9307b084555518f0cdd08cbf1c3ba066a5e7541d94. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X41555485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfe50628c212ba6928194c04712cdd6038060902c4fb911b0d62475b568cbe2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:56Z), 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/FR2X41555486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2f6ba1e4b79454e175ae01fa5d749d0893b9a818da5d98ae89c0e919661ac. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X41558436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2910cf97281004ef5666f433aefa56af52e99594b714dc28fff0929b53973596. 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/FR2X41558437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cb3b7c1b0ca834babe4dcb70c0899f95964f38b3fa3324ced87d6bc147c05f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR2X41558441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8dea3818579210eeb5727d39fba0a2a634d7d8a8c004d10a7ed9216a6291e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41555478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89226886e8a0f678897c7c449c26d3a97c5ef7ce5f697e0f689bb1e69d1750c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR2X41558135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a0008337454121821951d2254c7f09bf784567c78461200da3d0b77e791c38. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FRX201848067.