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 0xe8441e076396fa0af61e800d0075aa0cfe2abc566d112a30705417f20ee44f46. 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/04569bea-6e77-4572-9bc4-d36410d22748.json and https://artists.proofprofile.net/proofs/artist/04569bea-6e77-4572-9bc4-d36410d22748.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 0x34da617272515924b8f16201765c901f2c7cd5270c55e24e4ae73cbb2b126e2e. 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/QZFZ62299732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a25166b726395ac53c0d9efacf60b6018a2e35449f4bf96e81143a59123344. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZFZ62299733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5af01b82efa00567abe6d4ecf6a4f6f2294856d61b7399d9ead594dfe9cd3e. 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/QZFZ62299734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa161ce052e23366a314d904ae5e644ff3aa347a7be1fdf268938c124bc7d15f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ62299735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd633e9876ef572b4e02bd3045c09ac039d37f9ca6570000fc3f58e9e138bd6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZFZ62299736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aa868196f7e4f005f57c200ce29f6107d8e6ea2daccfaa1ed982cd22821c4e. 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/QZK6F2288391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54117a0033f6b27a14171f503151a36fee447d2b231b14b67281ab8937bcc1c7. 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/QZK6F2288392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0372710e4f8d236c77f7ef8f159afaf171010c9b58afab656200fb850c538dc. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZK6F2288393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb9dd2e432a5d0c93e866000a40fe54b048024cbc10c490b0464227ef7d6cd. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZK6F2288395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f8246ecf0a745283d885779a23bbe970a15e63ba43910089fe98af0059f42. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTBB2270675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0952ce28d9bc6daf3e84064e33eadfa18b3ca800a48563d344b239bb17919f1d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZTBB2270677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c533cfcf0e39062157ee6a4786a55abc6f28f051000145094eac2856fc8117f. 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/QZTBB2271277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28367ebb175dc76d261309f54fe029f70e46689850c631a5c7c7a594cf648d8b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:03:28Z), 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/QZTBB2271279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6398864f8e0f8f0b94437464470625c6fa1597032258ab97d52a6b1d7a1c463. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:27:18Z), 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/QZTBB2271278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4138499889da63eb92c66338b55464ff5f63212159a2c6617b708196e92fbaf5. 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/QZDA72340219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909a99bd0d8ac2cde59d8305bc5178bb7717964bb2e11d2e7dd2fcd441258a70. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZDA72340220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f1a9661dd9f77247e23a4cbb0d267915b96f995c77027a2282ef128d9d3997. 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/QZDA72340232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab3ae7cdedebcd6ff367934ea2e8adb9b14be7b0b1daa6db85183caa50c4b1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA72340233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa686f3d7431838fb94b48927574c3a6a2c5b8456514c6abf023f4bdd4249f26b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA72340234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb6b944efc803780dfd946075bfb083c0c90bb48ccbd7d9d7d31c6ac880eda. 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/QZDA72340235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb63188f5ea7b7ea711a05deb92b193a3277ea7dc5d17cbddd6a2e2e4e877ca7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB92386177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd520ab67bb997eafa1fd40c309862b475a26d465fb8472ed1ec4b6870f18ebd8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6G2444881.