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 0x664c62c9d1e7376d6b2524702b61d073ccef4fc129dd48803c7e3e54a65ba59f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0896af0-1fd0-41ec-b27e-0dba7f70dffb.json and https://artists.proofprofile.net/proofs/artist/b0896af0-1fd0-41ec-b27e-0dba7f70dffb.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 0xa5354a7a816ff99a31a328fa17ab3c2a9c8fec488760c3be82e2ba90bc7eb8f9. 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/IEAAR0100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13629842864b63a0681a82e3180f758a96991b7a262fc1f9d2207e9b2936bd38. 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/IEAAR0100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ae001da086f77dc13a120e2e3f536fa5e95cd67164177113b5371bbe9f547e. 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/IEAAR9100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e10b8976365cd8e4aa65ca64c94287e49b7cb1fd647ade39642788063f7747. 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/USWH19101169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dc50109982f2860479d66262cee18687ffba5ef58dc9895511d7312a05d949. 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/USWH10200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c70f7c23da921e88b4f9fb48a035c10cd595df4b184acbe4fa60364ac9c1c8a. 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/USWH10400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6191d1e8737b7731411714b8243819d6e787de7ab6defaeef1ea907158c9809c. 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/USWH19700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe0b978d63fbe38fff8a6e6027eb2843536c7e39b065d2ffce5b624635b828. 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/USWH19701150.
A Quiet Revolution: 30 Years Of Windham Hill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d75e0233e2b937c7496e74723ad0cc192d4df70cee5450cf65bfde632d8cf5. 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/USWH19401079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed93cc1cbde0d6858b59dcdf074e9255b2aba31bfd46b4fc59cb09a0df1250. 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/USWH18101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820de10f0fc8a539b2fb48e2e6a37f132f048acb2d1b0c18756147c0c172a26. 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/USWH18301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22253947c24a8a2dd2b327a4df7f53183a5f60caa789359b1f66bc96581aa96d. 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/USWH18501049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acf936b7a9939d7d82ffe1d6ba2d7c174be909b6784693c932f8bf4a1e437c0. 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/USWH18601031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd53704fac3c26f405e9c71c7cc426c48da5d58983d8d8bd6748b7d17d8e9ab5. 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/USWH18401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159235d1a19c7f39ab40870fa3fc533a4eaed576c6867d66d679abd59c37c5f. 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/USDC39400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eeb1967cf3ab0a0b220f9eca066334b2cb8c99cfd56d3ec0fd1e43ff5725f6. 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/USWH18601068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb394f298fa4694acc0aa306306e16e9b7c98e8c34f526da5cd31e12263ed834. 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/USWH18301019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd8b0725275a0c2837e9684f5a88e4239ce7e85de34b5d01ffc7f96ffaeebcc. 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/USWH10400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c72423265c55c3d2c53ae1ba9372d075203442b2f67df8a9b25b6e550a4501b. 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/USWH10400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ff745823dba061baf6ec89b34a6994e35e12151503ab0e1d6321d17b7b4b04. 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/USWH18401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8856945a8c5b5ef7c6c3a1f6951d4977f92c28394ce2e7370cb97ed07c310d27. 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/USDC39400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5a851e067ae1daf0bef57de019a16fe3b5d614fb3c6a63912987f4df68cd31. 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/USWH18401014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c30a16188e1ef1bc8be10c2c489a4ba35188f3f6981e9fccbc6d88d904b95c. 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/USWH18001015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1423538e9966b5a1e2c0ee10d6515b09a851a41736603ad45cfe054d38ad4eec. 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/USDC39400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00f4208784322b65e6c02b0d924b7d88af4e3bed96d8a2fb2297692f236eab. 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/USWH18301051.
Celtic Christmas II - A Windham Hill Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580daa1f658b8cbb76bfafff4290ec8fa625dbfdc693a105cf20d48b7643c82f. 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/USWH19601183.
Celtic Christmas (Silver Anniversary Edition)
Holding Up Half The Sky: Voices Of Celtic Women, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda843f0dd8f0ac40d714d5d3323d22628bba7eee50bc9fc62f74edf9c9fddfd. 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/USJER1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb1af853dac6daf2fbdce3b706ed500dae3f09b259e5ed05eb39f0f8bb2b657. 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/USWH19501055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba35796e9b0581bd1c6ef90cb246b4c2e984079a6928d2e08e0101d053fe2e1c. 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/USWH19401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eea1bdec868c9072ca28e26d4ca381245fae3f4600a192edb6c4fd72bb88d5. 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/GBVQM0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca68230461860ce06a52c8275e392f858691cceef473aab86c83b3445635446. 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/GBDFK1310003.
Blasta! The Irish Traditional Music Special