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 0xd74ab6ac63efe56fb7c5aa1a86701f33f07faeb96f4144494b2338a15748c5ce. 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/5f2101d1-b096-4d77-bb7b-63ce4aff43e7.json and https://artists.proofprofile.net/proofs/artist/5f2101d1-b096-4d77-bb7b-63ce4aff43e7.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 0xe03976bbdf9e6997bdebdb4bcb65d152e059df4798192f7f26d208471e60d10d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US4E41521202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dbe3dea9a7ecf5cc43b78dca4559617fa3e197f05f2e4573f61a6bdf60f8ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US4E41521203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0007c19538bf77161ed35e949ec7daae6ef9fa36cf01b89773627a1d22f577c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E41521204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6288e93a5b5691daf9ce108d347f6273afa7ec4b8d22404050723c2091c596. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US4E41521205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb428369ac0e28322811bd53ed702b9967d8576c018ef84daa59cc168c78f1516. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:41:38Z), 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/US4E41521206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae2443333a1d71a9a5c0cb6215cea1e0dd1c2ce9002297ea58eee068b0411f0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:09Z), 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/US4E41521207.
Sermon Of Mockery (Extended Edition) [NotSet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fc7074783cf9ec2896e1919b1f90b277b8ae38dcaf11d7062c10693b15ecaf. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMFME2141954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724dcda8c31bebdb27044f10de39b9a27425dd7c68a9dfa96c198b9fd19ccfbe. 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/QMFME2141955.
The Day the Earth Shook (Survival of the Fittest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb657608be32849be87b53e3549511bcd8c31ee42bdafd7e5ec4f2873664507c3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:14Z), 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/QMFME2141956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b575f3b5c2732f46b4558aff2c150ed04b8af84a4b8613380ce15e60087a053. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QMFME2141957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3043815c302b31445fb36e972927072a09c35d21179e06ca09f1fd8c2c8d733. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:19Z), 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/QMFME2141958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624c31dfcbfde0626bd4377376b99fb679b85ea2046befaa3edadc746b5c8190. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:26Z), 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/QMFME2141959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb062d784a3e2072e1820c45f0a152c66594bfc4c8b07e8ba630ff2ab7b02755d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DE1AM2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722680c82106fc11ae4a84b4d52007995e8224ad1084558384eecd9bb1ae078. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DE1AM2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ebc3bc867cd54e4117a05b832a624e34a692e0dc3241238a687a8038324f66. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DE1AM2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7c9250d7a04d3e3332b1c4320568026c1921012d2b417610b8f924b165da6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DE1AM2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc976614202c710e8e387db089ac4f462adec1c1403fabcc70f1060623fb3fa. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DE1AM2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d4a7687d5e7429cb6f9a239ed6e16a21ec78793723b806e28cc7a2698f7070. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US4E41521216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b8a527434db791327fe870118390c1ae6b7358eb514afd987885e4ba6af226. 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/US4E41521217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499ee93fa4aa2cb3bdee8455f59c7ed02aeef2f8f7be4ddc407d519da10fa87. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:09Z), 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/TCAJX2512685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a63e122a0424dc17129629816593445c812353235217bce36a6959598b8778. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJX2513388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e02968704028a7367e5ff32a196dac8c168c572e22d707bd8fd16b09bf3aa8. 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/TCAJT2513715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4a468dc829fb1eb80774295603b1cb73e0b2a0192c7ddbcf6c0a1c07752fc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJW2579730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc35c3969519ea0cdfcea115b187d97ad6cff65b97d8f750e2d633befee3a340. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAJX2513526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba911750596c63cc944339f545618558700b30367d1ab7c3d418ca342caf6bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJX2514336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779445375ea6b286ad6bb06ed75f7b9e2feaee7fa64a90b622a02fea1b04e6fc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJX2514340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2501a6563f5e67d44b0bf45ae80440872680ba18181a331b57ab90239a6f95. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJX2514348.