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 0x9be3aa506a94672c78d242500149b3bb1b70348149924446bbf57009e21fb9f6. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9be167e4-8d0c-445b-80d2-68c6509297ba.json and https://artists.proofprofile.net/proofs/artist/9be167e4-8d0c-445b-80d2-68c6509297ba.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 0xea6b39699c8676beb4ae1a53f7eddd623f832ab85b586f97186e3044b214c01c. 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/DEZC62037761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b5cbd08d9a7e5a56aa8c6e8189df6b8ff3518580958d91360ce631c5b15ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELJ82047576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad0b5547591cf8a9377374ebbbf64012faf06b5cb1199f76521d6fa205c15fd. 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/DEZC62180445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5849af8ebd4ac18b1d82a7f4a8d3b968e324b09c0123e458ae985d6710acd4ff. 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/DEZC62189080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1167a13a06fef3fadf730d404923392867aae63d39dd5c165086fba12e01c0. 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/DEZC62189081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106ae2660d4f80b2407c8619d283eb2e7a6ab1768186266a24b066a7fbbb288. 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/DELJ82099198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae90eefb7120b482c9302c33e185ce406d4843bf5f10344c8a7f8476ce5d7d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELJ82025177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9c56eb6c81c720a6c94a1cf58380dfac778d3cbac7d797483f6eea92c3327b. 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/DELJ82030591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9d51a05c95fb0134fbf41bfe581780c08699fa20616b0ac1927fd3097e55a0. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:23Z), 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/DEZC62028498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde01617fea83cc7f6379a122cee8697b4952effda1a9592547d544bd3ee26fd. 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/DELJ81957737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebd04ce2c9d4a14beba745a13db008579c78a753357ae11cae74556a5b00ff0. 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/DEZC62132544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e51c9fe0294647c7b2417f3264c07c3f80749431014f63f75e391377351b2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62130941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad0b5547591cf8a9377374ebbbf64012faf06b5cb1199f76521d6fa205c15fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62180445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6b39699c8676beb4ae1a53f7eddd623f832ab85b586f97186e3044b214c01c. 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/DEZC62037761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ce66adbe064a3b85f6ebeff44f7dce589a3459f5f53bb8e70cd780ccc1afab. 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/DEZC62019668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b5cbd08d9a7e5a56aa8c6e8189df6b8ff3518580958d91360ce631c5b15ea. 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/DELJ82047576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae90eefb7120b482c9302c33e185ce406d4843bf5f10344c8a7f8476ce5d7d7. 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/DELJ82025177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106ae2660d4f80b2407c8619d283eb2e7a6ab1768186266a24b066a7fbbb288. 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/DELJ82099198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe87b1e11989290e3a18ad845fee11b7db9a7a561976180c02874a94d6470da. 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/DELJ81812885.