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 0x03c8e385546ad8ffeebd6146d30f0dc801d388f94d7559507d97f651b931ea4e. 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/207f9599-e59d-4ef5-bc84-46018f3a9562.json and https://artists.proofprofile.net/proofs/artist/207f9599-e59d-4ef5-bc84-46018f3a9562.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 0xd3604704ca72a04156606ee67c2603cff6a1a62f881a1659f2625810086e564e. 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/QZMHN2491019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafeb6c9162db2a526f834b18f555ce4211b993e0f2dd052a2354c57e14f1b1d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:17:50Z), 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/QZS672434309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810641222f95c213261a160bf1f28f475635d708eefbb28906a309166ba39640. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZMHK2497945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c1a9ec93fe0aecb6c806a6b4f595605af06fd75345f92e2dd2ba93966c295e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZS652484890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7bb3df2a40c5f87b536261a031ae53c30c873ca79f72ce05e09fed41bf6b5d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:34:20Z), 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/QZS652445791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83bf41300ec16ce55daad356e33f8bd307f63eeca8f1c0d2ab1f3c1d6a559b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QM42K2499105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b2907a4c8d9423dce737fbdc93f1604475782f7435743a1af595209431557e. 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/QZMHP2494032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e83e2a02022bae0d1e92e169f32067038ab160618e1d1b875f352d7799427c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:33:50Z), 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/QZS632472559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ca5434998c5127aaa8aa5115aa000d387f9ecb885f84d24a65db7163bbfc5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZS632472911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b81454960e90b3712d04db0c9e96deb224a465cdbe7feaf6e46960fd90e71a5. 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/QZMHM2452372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b92018516e6fed1c1dfd9546cd7996ac8cb37f4edddf78fc5bc57c1b822ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM42K2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec5000bc7c7ae33b8f6cca65034699713bc602eb391ee749c0de972ea20c6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS672439452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed74774ee14c2f67c3001bf3060da3d8b0232c3a1272abb5c8561c7322d4e4fc. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:36:14Z), 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/TCAIJ2496959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc01925dbaf1ba36a721eda75fcf1c291383357bb370016a4383421189b5d5cc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIK2496969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472be9494cd8522bd27075ad5ab5a8df53c04fba7a23bd2f365a63f45a2fcc69. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIJ2497006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8eb1914109e0279001ebbd47f10c89b73f71cda3cefe3710d691315bcbcc76. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIJ2497017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c368937bb24e805412b105a716c1894009b04506d3a989055de73b4d6dfd649. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIJ2497036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b875eb932bd1b067ff1a773e975207674690303d003caab4793cefcb9f40d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:07:45Z), 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/TCAIK2487354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9295e4c73e9f6c6f12c232e461f6998430c97b7af0faabbdde31d49c8a3153e. 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/TCAIK2487361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f37758316b0fff1b3b45e05fd10e8468934582515cd303174775c7a3730bb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIK2487364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c11eb4582ab5fcfd8644f5e5a99a76e06314ebcf1b44f7a1451587f6050f50. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIL2487367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4262fb1b7d0db09ff9b1742c30293367d81f0f43813cd6ae755271f0a201c87d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:05:59Z), 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/TCAIK2487375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c07ff85943d0e3d7f4b1b2c64d424817c9826cc3fda4b78100f33c9de8cf28. 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/TCAIK2487384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cdca374bd45a918e843170fbadb6f2a87fdad02ccb46045a9510386e1efa8e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIK2487385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbffbaa322660e6db7cacdbcc6981a7bd61c8874ec1f8b0a3b87c31147f6880. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:08:32Z), 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/TCAIK2487388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943a11b80d1b61c706e9301d59671025ecb27b1691a741b9a99c41fa9f391250. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAIL2487398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb968b8f40df2d8538e9717454b8018b6d96cec9a6d3b917f202ff3014792a38c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:26Z), 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/TCAIL2487401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f0172614037f365570e8b3d11104d0595b0390a0f2824577ad205925628261. 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/TCAIK2487404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc615a2d535baa36004fee5d86936ddcf6cbec0806bdca88bb29be6f677e924f4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIK2487406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4fadb74a3fba78e5d5136d62ae8d6a4c0f1ee14addc6f5a3bef91b0d1a39da. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:24Z), 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/TCAIK2487412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb201f7e2adb80c9a53d9f7422d2afe26e279fca2903aa5e9292df1fcf96922d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIK2487418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5977c7b985e8684334b36bd694f1e938c6a43b3890892a57e709c2a26cf8883f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:32Z), 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/TCAIK2487422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ae7393465cc9d1b904669fd055cb448d0537be9cfef1209bd667fcf09c6e22. 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/TCAJL2570015.