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 0xd01695aa69aefabfe3985affb9947d5d7c9d0b44afadab7a5756a2226153a659. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28658b09-9cca-4e5e-bb8c-f4c6c6aecebb.json and https://artists.proofprofile.net/proofs/artist/28658b09-9cca-4e5e-bb8c-f4c6c6aecebb.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 0x15c761f0451e805ee58c5baca9532da615f1b3998fb9a8866b660f238768f954. 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/IEBBA2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa449cd016f3f5643e3c8d1b7dc2444d5e4170358a7911b8efc5c0996d439fc. 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/IEBBA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71506a1f0886aac6285da2ef90246b207a1152ca4433b71dc83e9162dbc8329c. 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/IEBBA2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a4c6851ef26d2b87999fe2626cda39f70979328023b1094944ab802420ea48. 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/IEBBA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf27846208345709bed64889c4c6dc4c278f24a7de2699e99a91671e6c3869a. 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/IEBBA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011035aa0d270c7dee07f14d6e3b4b628ea9b466b18855d4e44778d070d230c. 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/IEBBA2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff28cab83ab1f2bc1ffcad9069390d72161a340b9d873777bceb539cb859e522. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IEBBA2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944c5e4d39a8ae37c79692f0e075db108f1a533ddb97b1d8cea29a23179553dc. 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/IEBBA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f47c1c178db6a8a24ad8c1371b9d43fcce2dc577dbbf9a3dcf73a3516e72804. 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/IEBBA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44947480d2a4f1c23f8fbb08f5afaa835fed54c303410e59f73c8b2451e24402. 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/QZK6M2193601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92542ae4de21c6d3058622281505f908dc8ced07f188994aa99fbb0c088f2f6. 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/QZK6Q2184830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a9a22b7a9fd80937596b99d416e872357b9acd6ce94037c568b574ccaaf5c8. 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/QZK6M2193602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab79d1a1c48816fc1c09e2b62b1d4f67463fdf6b9db6f55d4600b4b6755a0695. 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/QZK6M2193603.
The Great, Gallant, Brave and Bold Edward Fitzgerald
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce113139fbad09eec6d7c21269e2ea3284100515dfe1af015a0fb88fab6a1497. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6M2193604.
A Farewell To English (Michael Hartnett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b2f0d9e55f911d650d5b55e8b635bacdc82a3a7a8c23278debce313ba9c5b3. 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/QZK6M2193606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec8f867bb2bcf59a84399384f1a3f80bc7a23586fc870bb7e704126a74dc15. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6M2193607.
Round the Roundabout / Timpeall an Timpeallán
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9febe462babeb525ca44d0aff15dabe1533eab589efddc2749eab1ca9e8cc1a5. 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/QZK6M2193608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9969367b3a2eda92844d38faf58d37dc29a65a2c84d1462bbc2a504229c504. 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/QZDA62029425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47104526ee895c8bd4b99ac52aee87b67cbd9e60bde565380693aa12186e80. 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/QZDA62029427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1bbcd99e93a165dd12677a04dec60c31966631616941efafd2135b2265bfc9. 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/QZDA62029429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f129bd375bb13069ce92e0d8b1aa29c22ef311c4a56135506ccd03a96fceee. 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/QZDA62029431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed77e1092476cb4d37973836e0c81b29b5471960e76b8ed6ed35b6e1c56c77f. 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/QZDA62029432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40281ca1097b21d56a9acdbc91ceb5f6a829783cd80712b32b80b1c33f0adb6c. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QZDA62029434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9473de0cd5f4f9fa7a4a3e73878754984eb991f972c204eec97dfa06e864e9d0. 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/QZDA62029435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03576bd82f6fdf6a9b7baf862100e7341a464cbbd378ad652edc6f2c9b73a4c. 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/QZDA62029436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24ab194653121c3fdbe262aad3c012e53d1a242475c72dab5590ef606e20aca. 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/IEABR1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb2a87de699418ad8c1c64ac7758d6fc5906850d5aa7bc612361d14793dfc3d. 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/IEABR1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fc6fafd6f71b3dcb8332906e6736a5cf655fc63612d26c4ca0f61ffc0eca2a. 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/IEABR1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba8ea70a81b6f85dc7f5678ae553d8de853f9f2b1921257c1150c2d05250283. 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/IEABR1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01923d731d641f414aeee9963f203d56b66d8d5fee8527ef1e8976f895caa8. 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/IEABR1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa449cd016f3f5643e3c8d1b7dc2444d5e4170358a7911b8efc5c0996d439fc. 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/IEBBA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92542ae4de21c6d3058622281505f908dc8ced07f188994aa99fbb0c088f2f6. 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/QZK6Q2184830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eeb4c86c361b965cae67c7edd25e3477ac6c905618caa8cfec7ef739237703. 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/QZPLR2006408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163a3f2027f2bb3908c300c29fcfcac691f94250b5663b445d871bc75e140027. 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/IERRB2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420570725fbc37132669fa5d900a12d0dc85643c80ccafce69a6178def4a1bdb. 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/IERRB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8300e0d2f9bceaa82862604dd560011cdfb092983fefbe9696bc1ae31f86833. 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/QZNWT2421828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099f0a16c77ec207bd1606d5c188184ed55bbd9e27635f9bcc02ac7273b80d11. 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/QZTAX2470405.
Phil the Fluther's Ball (arr. D. Mooney for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ce5787e92d298332f12e1b8ef3be5388d21cffd89ca3613f6d67c919952ae7. 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/USAR90414005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986467e16abac22a1f526ca666f86a554f9e6317ed605a48b2b424821659b85e. 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/FR6V80821370.