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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1818de86ef10602a146e89a3d2e5f050465e76022d2aa6b28c0a8898a09a3b. 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/29720182-9eb4-4290-93a0-74c66e22ae13.json and https://artists.proofprofile.net/proofs/artist/29720182-9eb4-4290-93a0-74c66e22ae13.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1c29eb5a3ff7d8ae9508c818033db0085085145490f9db920d2fdfdcf90c7. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBEWA2307341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2802325d707245fef376ec0719169c161b45a44084d1fdff2a8e8756e6210d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBEWA2307343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5c181c27ea99c8b7932e83d6efb31614c10b29527f24ab8ece7c1c659ae5bb. 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/GBEWA2301601.
Happiness - Jody Wisternoff & James Grant Edit (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c742a0b9dec4f5b2aa8b65048553e55f52e3a536553d13495e31888bbacc91e. 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/GBEWA2402656.
Reflections presents: Earth Day 2024 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f942d4c592a161bd59e5bd589f1084296762d9def9fff2f7c2523f2589fb10f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEWA2401753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0200c3d80e017613a24a921295505938b09ff86ccb6513f330656ba20da23ba. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBEWA2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0200c3d80e017613a24a921295505938b09ff86ccb6513f330656ba20da23ba. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEWA2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8ac9f5654d419881dff61971304fab2813e773cd4d4af9a39a58da07ad375. 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/GBEWA2404040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c81f786652e0d77be53ec49d0248e4deeec7986cca6f40a1faf689a77ad7172. 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/CAU112100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c58f1f56782d68a4e0f31d1b5b3a647dd0cbb1f65aefa74096c64ec5970f4c3. 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/CAU112100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f75151d984f9a801c775ae02b309714b8f401d9b24bdf071018aa1c51508e2. 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/CAU112100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe123d6a896500fb90696fade877bfd077181fc8fe7037df9438e38ece528dc81. 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/CAU112000368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e2551eee2f06da25e6f7068e44c0dd4f7ad5e6f405353bb4bc96b0d54170d. 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/CAU112000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e86f18f0d59229d25c07f2d90c2d72d3e0ddd86666a3ece7e0b93ca017595e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CAU112100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db4818d2d3cca64e55740ce1c0de76ffd3a5a83afb54351fa982f6439ddaab4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CAU112100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b57736ce2719d179019c954a1eb5ce7f1ae2829f8ccaba3c594d374ca5d15ee. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/CAU112100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1540abf3ef29f941b1004cbb466e33d53198c1f68738db8e384a460eead58. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAU112100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015edf0affaf13f7a714aa7ba100d3c8e50c631f8d54dd61d8f17e761c4dca45. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/CAU112100052.
There's No End In the Beginning (Acoustic) - Album Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3909162243317c6804d52b6834d7d147a4bfd173827ec1d11590dc710a45bff5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CAU112100053.