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 0xc1c4be02bb3cc631bfd39e7b758382ad809e5c9e07eddee1c44074eb438dbec4. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cce5ded-361a-47ee-aee2-09ae1b3ba77d.json and https://artists.proofprofile.net/proofs/artist/7cce5ded-361a-47ee-aee2-09ae1b3ba77d.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 0x76f3670925ecee1f91f108a6d2778bc0169aa4f06c80964a6fbb289d54001491. 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/BRVR10500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456dbb3a97c694abcbda69402de31fcdc796bdd1130027b22a68296c0a97b234. 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/BRVR10500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6b2f8b06cb95106d3fad9b1a1227b2b003cb1486125041cb5a3d7377e9b91. 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/BRVR10500693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f9539c4331950f42cb9a8d340067189ef8b92ef12573a98f4bb74d9b5a912. 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/BRVR10500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e431fb181faa7e3d78b62bfdc0cfd7b0f04f90aac3e61909eed7f5a0957738. 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/BRVR10500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc444862073b584728cfd2fee1b6d26e76cbf0d4b50b0e93591a0374bb391540c. 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/BRVR10600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52675ab9a52b1cb6cce1401ee29b1e46268b5c9f7e799c37aa51c1f45fd0f7ee. 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/BRVR10600174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe233a2d766a67feca266b1fda16f447f0a3fe5b9812734ff3056f140a6184ac4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa9f328bfe8bd76a414b5464ee73aad0b990a346a207ae1dc96fef65bd972c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4922a1355297fed7865f7b2bf98e0adf52a89c766e98dc862c179157107fc70. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eace16cad38d365bd461e101352dee1ebedc78b5f5a283eb08ed7691b6f8e6b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb01e93622cf5862b096c0ea76d1f4f5fbb33f090a3816c92f8e2bf186f7227. 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/BRVR10500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11623ed71735ff045fe62f10de4f79661904fadaa77dbbdec96123a964e60f72. 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/USDY42138092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f238a10a1a707111b49a9da0314ff60e3065db9f28382b81de11200f944fd8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDY42138094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2387231e3bddecc08575e05925289d299ba750419432ea4427c78139f696d8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM82046096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171dc9a918038984cae4411df6a2e42f45f1c8b27f0eb8727d1fe533c564022c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRACT1601718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4922a1355297fed7865f7b2bf98e0adf52a89c766e98dc862c179157107fc70. 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/BRVR10500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19e048f9a763af3402cdd207c15a8214134f29bb59d1c07dd1ddde2e12dbb02. 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/BRUSA1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c67d7864186a22b4f8c4dde4c2aea04e97a858d214adcd910e636dd0c50ef8. 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/BRUSA1700979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fa92e6842ce1e13e5d1a3429657ea22b6301d65902580931b42da5b7ebbdb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZMZ92036635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5a156ca278f9d372d093979ff6d77a83e77d67a2c3595b35bac3a4f5aa7dd1. 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/BRTMV0400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf90cf6abad4a5688c4b835a28d3841c90e3ff4e3a20347d2ffa22445cc81c. 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/BRACT0300749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf0ef22423cf86aa90cbe1e03834daa0260c38a32d4349654923aa098867ccb. 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/BRACT0501072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bdcfa1532e84b42b96d5dea7e9070da251679c43d0af1093e04fcb70834da0. 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/BRACT0500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a27af1f447628be5bba8fc265940b648f50202cf755d2bbbfba1ca49867ed. 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/BRACT0800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7db95fbd941a6b72f274bca78e615c95d6fde59296763992d13619ddd2a063. 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/BRACT0700770.