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 0x0e4c9e853dd7dc62f09eea38419571d4b22bf5257da492ac72500bddacf0bd32. 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/cc85f6cd-a4db-4e9f-b334-dba23b160b4c.json and https://artists.proofprofile.net/proofs/artist/cc85f6cd-a4db-4e9f-b334-dba23b160b4c.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 0x298de6f0030b39b551b8601c04e2948716edc06b4f4dcc55bd911669b3625457. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USWB10202124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aefae923b11d0c431aa6a39015e0f7097ae1b550de0cfd27056e5f4c2001e2b. 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/USWB10202125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2974eaae07de1530e650d980a515f723099018630aec55fe1d570c6c8c5a71a5. 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/USWB10202127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf9670b9d578f48c66c7c995e5b5da6d3ff4f26f3027d5a48b91099158822af. 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/USWB10202128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a58a9b6296b7dc411cc7dba8849f5a562c283f0bd65b0cb40ec7eb29404af. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USWB10202129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ef2c32f2983d132e59dc311d4c68989bd0e21e2ac65c78149a8aceb2c730c1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USWB10202130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4bf8fd4a8fcbcc838ac4e6050f6d48b3d4d924da73c8ffcdc91025e17ce247. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:43Z), 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/USWB10202132.
Vehicle / Lead Me Home, Gently (45 Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1fef49bbc3e864864eb9987e79228a38222125fa9beb935369a85206f2584a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:22Z), 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/USWB10301418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d1af52e1ccce86d19e656d9fded020b916abcae514ff3c28fa6bc2e786da5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:06Z), 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/USA560583689.
Friendly Strangers: The Warner Bros. Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145ede4a2841ccb6b7df0944aba0abbe048642474f86888ea9a3ee723bbbb5d. 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/USWB10107711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7695e66956ad0dd4201c46da99ceec5a2b32e9254519efce0190b9174f2afdd. 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/USWB10905072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce436efaca61d5aea78678bbf75509097dd4f4c5a0948242e30e70d7a064683. 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/USWB10301407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce436efaca61d5aea78678bbf75509097dd4f4c5a0948242e30e70d7a064683. 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/USWB10301407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145ede4a2841ccb6b7df0944aba0abbe048642474f86888ea9a3ee723bbbb5d. 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/USWB10107711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbda6aeba9d870fc98f900ca16947f8f458fbf57ce85fa04198c66aad8d1b1d. 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/USWB10301422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbda6aeba9d870fc98f900ca16947f8f458fbf57ce85fa04198c66aad8d1b1d. 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/USWB10301422.