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 0xca10b5593119a601e8da3086b04bb51fdd0b223a52bf4d085992e084b800324e. 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/6e69283d-d125-42bf-b243-38b4cea59883.json and https://artists.proofprofile.net/proofs/artist/6e69283d-d125-42bf-b243-38b4cea59883.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 0x9a75317e76480509b0755136c664818510216e0173a1da1fa104d8fe7fcb0d4e. 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/GX89G2248564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c63dbb39da0e0091631785898ca865c66163abdd19197edc7c5e8b26b7ec51c. 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/GBSMU8477461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe088de2c378684abc7d6f498cb6e230bc49a3eb05979785eecb8340b2806da87. 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/QZS652333546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf82c2b3535c435dd0832526fd44e376067260303f873bc4901913dcce9971c5. 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/GX8LD2364042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fffbb6fd78ccd0fafab7b31938357bbc6be16764b559002d71ac5a6a9f41e6. 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/GX5MY2259516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fd42a4e799f5931f24da51bcb17005a63bcab639c175586b87bb6cb6450f03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6SA2294589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32285ce2331d885e1cf47f65f28224f4559db8a86a76736dbf7f0f44d8fe2ea. 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/QZMHK2247986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc49b5d6b76f29784ef64f7fad12d12184598595d769387d6c0691fab1a93c9. 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/TCAGE2279345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a1e0779dfa6c905c5c325b6f6cbe0d81ebfeb5ef740882046e73458756b632. 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/USA2P2206495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab683d41d466c3a97d990d85d6ff7a087caa095b774365b92c87db7bba8d46. 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/QM42K2203755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4618ce061847301ac6ef64006232e5cea3374b3b7e536ab0faf8547b9dcc3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5752268323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fe9cf4ca3e64b5b35c9bebc657c3fdb1a868ddcccb72c4a44b5e587af4934f. 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/QZMHL2061320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba74b93a19b319872be8d3bb60569bdee30dc84b568ebe8b1f360781d28546f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX4R52103542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02daa045ba0706894b233f2e89c55c795f213c86fb7656eb9f809f1404cecc1. 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/USA2P2120014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413d811d6d01059b3e18319757f30eb2281f88e1bbdd8db70800e91a52a39668. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHM2086008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e465e575dea47cb01dc78a83b353682f613a2e1dcd44d61184771608e2b9560. 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/SE6I32121804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c71d5ad1cc9c31525fde2bbbfcb527112df1e2b42cc6d31b8e829d028870fb. 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/QZMHM2055818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453233713dc5a419c277a3db00e0cbdbed735eebc968d57ae0d7c3cbb57a0fc. 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/QM42K1999402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d8eec7c548cfe0d0fd4d6f988aeb082c905e717fb6ebb64ecb2d659141017. 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/QM24S2107370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72282976fcabe76e5182a0a1e346d8745d3a87d2095fc037b73fef9eb866747a. 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/TCAER2076588.