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 0xfbb97dca33254b73ee2fe488d89b0d5e108fa205a79402e06de18b9505df591a. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da84ac9f-800f-42b0-af4f-ff6c85efcbd8.json and https://artists.proofprofile.net/proofs/artist/da84ac9f-800f-42b0-af4f-ff6c85efcbd8.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 0x995fea3017765d51bad436ff59a2a1da991dd3289a311349c60a349ae1a8ce64. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/UKXN22300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4592b901a467dde867642bce03d1b6594e3df741700eb51282560574f2fa8d0. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ARC019700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe4f1f93648de5b47046a4a665dabeeced9555ad29814f700f3c86d91823be. 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/ARC019700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aa7a697d644b6c276e48bb45734a7b0abb0eaded6eba18da8a6a4f6160424. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARC019700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c9429f4199bef758260b0ea983ee67fed74feb8836cf3b3ecf1a607832888. 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/ARC019700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a3fcdde642ea1386a398e77726480ea755aefbb2cc62e2aa5cecfb039726b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ARC019700005.
Chacarera Santiagueña / Elegua - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5c4f5cd436c9c2ee41450906407263ecef7f6717bcd9363688a4f4c71763fb. 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/ARC019700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0b5abdae1f7503a9154e5b2a80d3557fa5be40790514870bd25684075f2d5d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ARC019700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b093aab166acbbcb4494f00e927915ef8f4ae4c4a459fd4dca5a60124a396bf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARC019700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aabc5384a59531582de22fe13b3b3dfab175beed17018e03643fdbe8268caff. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARC019700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdb821a46d66403b051887162b541a5a7fbfe6c32e4864deb131317a4607a1. 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/ARC019700010.
Vidala para Mi Sombra / Canción para Un Niño - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94a2e26d4d79d52be648931d525d454c9349a9cb2b487bd803da8a4f58adc95. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ARC019700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201193ac55a9922291dbec653a6e1fe803d23fadefce2ab01272f2a30997435c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ARC019700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45858b0d5821a63babe60ee36c74621644585a0c6bc2af142e561f72d97d756d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ARC019700013.
Centenario Hamlet Lima Quintana, Vol 1: Canciones para no morir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e99caa5241b2d41751048f0b2f56d92d8a7a7228bc86b0def1b979dac069e1f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARZ022300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c7d1ba36b2ee6a8e189db9721540f2468b316f3747ed78b99d296822bfdb47. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARZ022300479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9f622c6f624689eb2aba402ade226f532ccd997af25893ee82ba268727fa67. 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/ARZ022300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c2954f4ea2d45bcedcfcdc5613a10079cf3848fbf6b46fecb79b2fdaa97665. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARZ022300484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd79b29018f6981ed698188c88053b0bda90636a10007c2fc9f640524e3c285b. 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/ARZ022300494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5131ec5853671649500fe7309d3a61d6af80095331a5b6222cbecc115d5d8137. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBSMU4676410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f40a68bbb385775d053c1846f5e992e5b461c752dca2d4afb4313496782bc9. 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/USA370357024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52170bef47601ae6ffdeed3887cc53608cb2ba28174de5757063d430d1126c0e. 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/USA370357025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3687334ecd476c39a288b9c1525c426373bde5f5e75dad99d26e47eae0e80aff. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USA370357026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015ebc9bd502fa4c5414221d9428a2bfdc304a99d2384147074c67b741a3f3e. 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/USA370357027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24cba6624b142a3cc4f30dea2bfa350391b4e4414aca09d90ef6c0e90cd4dd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA370357028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce1719706da4dbdc31955c2c200aaadd0499080896a33b50ce5f5d53ae433ea. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USA370357029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5067b6b0a88a5b83efae5c1ccad9b3f99367eb6c6433a4219b217772b7a81b7. 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/USA370357030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b764b7a999372cf97b19f546f631d2a9b30e317eeca9d58c7243283e2a199fb. 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/USA370357031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68528680b0d016e431efe9e0f617a20bd1130d2a44397d2fca5002dd53dc1849. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA370357032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6485f1f7d7ff426dd10467aa938db99b34d6b97366b7c12f481e23089ab790a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USA370357033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef115327fc523147b83763d0219858866fa08ca8966f9283795fbd6be68493ec. 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/USA370357034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d2265624135bc2c8d5cec036b051cb6044b70318665aca573b17db1708ffe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA370357035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5713e23c467f655f8605ab8ab250fd975a00b6728654c7f548c4e245e3053894. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USA370357036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf41ad496b6092dcd3d8d4285edf9afa3fd3c253e48bb7d4e5976caff69bbbe. 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/USA370357037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc6597b890fb439b4407882805e908043b0fb3f8651a2cb71725c4521d55f3e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AR9S51600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf214f3c6e806707621b1d82070abe7f89d7ba3f048e3aaf8d66addfba6070bb. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/AR9S51600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a98efdb6b73812ec9dcc9f416377935cb7e419f0de2f16fe5e775a4c373f168. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/AR9S51600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f458713777e6c631f6d1c4873f73e391e7e7692fa51a25f20650aef3fec8d. 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/AR9S51600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ad0299d1c3fd1d7503d79992df59835bb189027a956de3b15f05c2abfdeece. 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/AR9S51600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78660557a30c2d99cf79be42b67cc3515b52248577e0f46f7f0944267367fd6. 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/AR9S51600208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d8bfe7feac58b8812914f78b10a72a55fe5d6182331f7bcb06ced8c6fecf9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AR9S51600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bf9fac5e94193caaa62efb2c795ce537493244cd3ae297efe1d5b75bd89990. 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/ARF050401409.