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 0x8e76eb9aecbde1acce744dd452b208dc748fcaa2c13f1e8cddec0921ba72cc4e. 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/8b374b4c-183a-4893-aead-e91d42964183.json and https://artists.proofprofile.net/proofs/artist/8b374b4c-183a-4893-aead-e91d42964183.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 0xa3062a67e9b394616af33a2c90c087e3acc11bc15a7fa4a5cd7a3a461f53dc68. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ESA082312711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56306dc421dfd12a4bf5636dcbcb24a317ccab24ad617a357030fe62167f5056. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA082312714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cfc00e7cfab8dcd0c43fe84d7f7194450629696922b582908df1770b1c80fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA082312716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a2f18591f5669125e4648579d303573f3fadfd1b49595e023808949bd8ba3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:24Z), 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/ESA082312718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473efa846f4ae22adac9f766dab89d3d0c26951e39330434760c8f44294228c1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ESA082312699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3f311457911c42a8dccd7717a87a76c03299cec59ddbeae91a04643b70adb9. 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/ESA082312700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e7db9ccbecff7c37580cc5f346796ffa125a644e1339c7242f5aa1c8994f83. 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/ESA082312701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111d50cbc6171eb59e9e708c1333bb8a4fcdca2da52df7624e11c12158f1aa88. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ESA082312703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe034a507085dcb58015cbb7b810219c6576ffff6e5d3674bbc11d06f2fa3b9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ESA082312704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325cee5edae47a8fc6b30441fb48401984db967947db316a0f9031007891398a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ESA082312707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03871195b613f3d1f54c6347e3c7c1324437085e1110a1dd1f88b4a728cfe3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA082312695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebcb8481206f88079469409f9afe2a3032f110d2c845577034a5baf66685fed. 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/ESA082312696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab976c98d05baf695f53664f76b3ad6a54dca928e0c622de17dca2fe686334b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA082312687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e085559afe492a7cc85d741b2f09a3e3024f9e02a29e2f3c722abbd55ee2f8. 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/ESA082312688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceadfdbdd296b9d26fbd2b5f1b871e1473ca3a8c3a51cb60db66f2a2e80c6e76. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:12Z), 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/ESA082312689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca7b9dadb5a87291fee0e6de98addd46610f3d73b176faa8fba71f610855eab. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ESA082312690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da123439a801f19be64d62dc1058b7590fb43c2136a9e5cbc315d37a43de272. 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/ESA082312691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f4f718b3555b94127fe9ec00a96added96c9003d9b8c97638745b84427335c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ESA082312692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96102324413ffa4aa5c051d68b87a59dc18319a92fc2bd315996b6a39a3fd314. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:45:57Z), 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/ESA082312693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec94db69da160fb31a99ed67f2425d5ec6a6927c4b6d674fe88abd46daa72af. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ESA082312694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f56ed6366c4060d430c95ceb28a2857c52df1029dc589f1e86a11a7490e184e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ESA082312697.