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 0xd179bf1f7e52b4342efff7305a247bc9f94fca77d8daed0715c465349d1e7f86. 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/1588ab4a-2586-42cd-ab47-84ce90deedee.json and https://artists.proofprofile.net/proofs/artist/1588ab4a-2586-42cd-ab47-84ce90deedee.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 0x9b57e68c6e911585891cf8050436b9ba2ad4cd8afca88d4dbbdc73b774736c46. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CH0010300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e80769501ae50b2c8a9efecd8029428144bb655a2920d3343dfd6dd5f5e1b6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH0010300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2031a96bcc8d850b34be211d4b93a61d497aec5cf44e3657dc851cf30e58506f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH0010300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ac79db7b66d02ce6808159d27db885b8038ebcce35cdad2f458330b0ea706. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CH0010300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cdfde3e5a115aa6581288e17a6e3be9f3ba7b5054e533b6e0ebf07babcd5e8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH0010300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1ad0fe19bcb3f7770723dca6b9db515c58a20a61b1273795ad1f1775273c04. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH0010300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7d675aaf4757a9b84ec4a07a73637376d8c5a81fa8403374a92502efe90562. 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/CH0010500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8d14a83486058bd40fb80d6fef53b0186b28b7756b451ec55f94ede8db0677. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH0010500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd776571aa75ca2f024d049ab8ed2d18231cec7752d4b9b87e1703f67898977. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH0010600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c8251f20eb2e74b876e9440e990abe0dbf6d0adfa3f85ee6883408350066a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CH0010600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc586a8eea91fba532f8711c302d963030de3ba2bdad3066ad9c15a850d02b8c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH0010600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe56a20b6af96057e1aa017e976ee0f5ed6e7d457971d408a4d4118418bb0cbc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:28:29Z), 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/CH0010600358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c17f155f3d4a4660dfacd0fc32ce37607078aab9cfa7f6ac39fd0013799f6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH0010900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63388f884cb9bad558a97cd88cb5e8240026b5388c63d51f94fe46acd494b59. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CH0011100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a89d38685d1b82300050ca7e4ba6c2b2705642ed2a69c3616972257889b4b06. 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/CH0011100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59982f5266cd1f639d10361d286d28b3590f330d8fd62f746cb5407c3a8ec199. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:27:51Z), 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/CH0011100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f43be272eea3cba3b67300ca92fd017c4b43dfe5bb00e1d5480d026a9f65ea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH0011100354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621cce68e8aad553222e2a4f4fa193967ccbc3796ba037bd56480a44806400dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH0011300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78f385b5de4978b221aaa8315a1414e90c6e5d3b219e3880890611ef1b71ef7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH0011300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ee692559f95aa4645b9898248ff267731c7985f39f0c483c5692d945b3c53. 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/CH0010800021.
Zäme uf ds Fäud - Dr Agriviva-Song / Viens dans les champs - Agriviva-Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f935a39756ce421ce1bc95f5d20754a552139b6a5e81a5a76616fe03d2b3d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CH0012200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43591923c4f1002220d6dec2ece534f0b433fac8303c7649c601764fdc480557. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CH0012200005.
Oh Läck Du Mir - DAS Trio Eugster Medley 2.0
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32862ac300ae95ce3a1dd09d9aac5bbbd13f1ea4a9af5f9fbd1bbbffc02c1f62. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH0012300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d36891bca7fe98b37f785dc074ed625ea573e53cca5390cf6e0c340d80a0d7b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CH0011800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877eea81996720beb94c2985620617f993d9e6458f98c3fb8151df725753428c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH0012300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c4835690c118675b967878d0736a2891f65f363f85f4453fea1e4e2c9a6c02. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH0012300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbadc2f35d008d71e66a5c6923984a0b835443ff3e335df6e19eea957a8999. 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/CH0800712104.