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 0x7b1c566dafb491e3e325d8e6acd3d677107f466214cd4a375c543737b143d9da. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f0e273a-9dbd-46ce-9413-62e558c8da54.json and https://artists.proofprofile.net/proofs/artist/6f0e273a-9dbd-46ce-9413-62e558c8da54.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 0x55ac1b89685bdc3817a253613a2070fab7db8b208538f7ef55ad0c69cdabb54f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES71G2124404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96667ea258433df09c78f5bf675ab3d9c32a7cdda5a31d2f0a267579027d96. 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/QZHZ52164595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6a2c54dad0e243a8362ef2728bcf7427653a8671f592e8fd1e71429657fd4. 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/FR10S2147993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6754c5ce6d3f9aa716bc6645c51d7f0e51a2308b3fc9d0b914c94c759498bb70. 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/FR2X42159786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66898644de55d4a9f6748ceccf78c52bd39556c8eb69b06bb5ec24b38abef27a. 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/DGA072166186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6a2c54dad0e243a8362ef2728bcf7427653a8671f592e8fd1e71429657fd4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2147993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e1160c962789b390449e7b2eef1dc8360b1691ca60bd7f2c4168352e60d95d. 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/FRS182081278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d7f649f7d00f759ffdd94340bd80c3bf0f9172a6f438a2c08edae3847efbed. 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/DGA072166205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7335e51b719d88cd38bdbe6674f1a36186ff24c1b470483af87f2544bd0e17. 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/FRS182043950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bdafbd29989d8a348bdae8ac9da3bb370e2839b927c9f0df78194048447bf8. 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/FRS182082038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffd9cb62ce0f7ec73dcf34458f608a25a7a9826d6e93479c91525ebda958024. 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/USA2P2316575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed78b3d1645b46590c22ed7d2b60cd7db5b027cd69d91579a470b7822d041ae4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2254504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e3586a9de4e14eb2937aaf3347a48246315be941dac17d15129017f8b84e05. 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/USA2P2248482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca94ac57e0da32d6ab42f322fe3997752645e523f6da8f5c013b52b771914355. 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/USA2P2307687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e035dc3488323bc6f5ddfb7cbbc106f2919f7474042dfc1f8fe5e119f2667c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2301270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe0ddf1eb343ec351dceb248eebdadbd470f7190774ed7fb95d92376523c9b6. 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/USA2P2337099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112c70327b549e8a4a325d14621a4f500833eca93fb57a9df81e9aac3abf013c. 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/USA2P2326994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50bfcca4225b377a87ef44b1f8789f07d8e339d8c4864c8d76075a568b3c98c. 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/USA2P2357560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fce66c1e986e1716a85019a8ac8d54668ed9f049e6fa256cd83796cbc6568. 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/USA2P2357561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24a01178189c94c49dbe58abbb8aaeb543af4485ead0a3e78ba99b8b611d180. 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/USA2P2222681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540a559bfb04c240aff6dc5dfa035ec885d7c9a74e79333f45737095601c1cef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2340115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bec69d7320182d3c65c28b5653ff71e6ff435fef5ae9aaea5168453c4019be1. 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/USA2P2346998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e3c35963d25a4cb65f6bd28d2573e1f7e61f0e4bd1fd5f45e97afa07520c36. 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/QZNJV2215785.