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 0x3d079956ed3a6081d16034c2ea3632e45c0009d910311c5a1f2268821e8e05eb. 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/6fdc3441-8f67-46fa-b5fd-66d007f7a7eb.json and https://artists.proofprofile.net/proofs/artist/6fdc3441-8f67-46fa-b5fd-66d007f7a7eb.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 0xebe129a6bf43db52784c25e0893dfca086dfc979b21a81a53438c87083beef21. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZEQU1904086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8735ff8b644556e4ae068d3a9995c720452d9146dccf23b6ab36540db70099. 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/QZEQU1904090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d330389259803049cc69d5227ac9bc5f6419442b77144809d429b8032da1c45. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZEQU1904088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b83798c2430ba59bcff7932cdcefdeed287ff03e6ad2b3eb23d42fa641f928. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZEQU2036741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd23079ed596b2a31d8df04abc193abf7ee9c1c34d6acf785c9a7dbbe04445d1. 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/QZEQU2036743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185d4ba8254683ba60ceb720406159aaf871af4a86ee0f3785d34ca5cf5f8297. 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/QZEQU2036744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3f4dd91aa8b39685048930bd312f2f91244dae7b63170f8229eee527b55ece. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZEQU2036745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9074fd9432712c98c3f8d1c812e1a251c069a1e95d1c691e43c2e0103b698aab. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZEQU2036746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950135642483754be885fbe71a204f7df63c6342d85debc9e4314e80dd0a8b9b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZEQU2036762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b2389f68e924cf53eff7148d298e1e6690163830a268a101c73c25970e8db2. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:49Z), 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/QZEQU2036758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2767ba32b02d1872c80e53364bebccfcc705e80732101773086cc04ed383e59. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:47Z), 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/ESA112559811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143a8470d6cf65626001f2a194bb476308447c556724edc451420e57c0668fdd. 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/ESA112559816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e55b03323b4f8152b220e3887935cdacc99fc6a32ed930bbe250e17606221. 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/ESA112559822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa23a89b5a2012e5c8a2869aec475240c28a06bcc2c273ef81561f144fd6fac. 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/ESA112559823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54b72dd96f5226a228cfd719b53b018c26abecbe5fe13e611c0ad5a07b97920. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA112559824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dae489e4b01f062be79565110da08f81b7e87f06c6b39955edf0df13a79794. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZEQU2126346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d44dca4bfe44330bdb8116b5ab45c04d42d9dc9a0dd7c57737f7e7eaa640a8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:02:30Z), 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/QZEQU2126347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce67d2eb290390f6383d9984dc9ae744f29420b903a63cb0287844bb18c6223. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZEQU2126349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23605e4584d2e642ff927237783f7ca7708b915ffecbad9c47bfb52ff8742cd2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZEQU2126352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29109ce5e6d73f2ba0852c6483a5beaa7cd27caf15cbd4c4d24a8519e4e186c2. 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/QZEQU2126364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d99bf980c0770b1743b028811b3930a7441d7eb18b68930c929abab1921514. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZEQU2144815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1784e0e84692f9e25bf7a80905b2a02655b9d9bb1fc72fbf19185e0046a6f360. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZEQU2150725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ed65151a1b06245834906962f3dd22a97a33427a3fa9f4ab2dbd83923b230. 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/QZEQU2150731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d5974b4c49b8023ac784285208df87fe798730a28e051d3fba29dc41ef6626. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZEQU2150732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518e2ffb663c6890a32b92f7171dc931906ca4dbc9dc5f3af4387fb3afbde78. 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/BX58E2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659f479b584ab5dc3426857289568621a9db0b79b8ce8d10e158582dd2da1e0a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BX58E2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c609d948d5851b73d5522b876f6af5bd7f45a54d0e27a9231765920edfe4eb4. 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/ESA112316495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2630659b56af49bb58bb19f7798dbb387a9e30977f0992df3a409a8e41af2b44. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:20:07Z), 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/ESA112433407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278058b2cf3ab719324de7f132bbd60d4ed511e13e9f4ddeb99b3f6d10b547ed. 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/ESA112438994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9102746a9208821a9b59ba6dac4e05d17f2d91525b3993f2b8f6d8c5a61a0c8b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA112438984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffc9ed2289ecf38a356b108c6e3fc27fcb5ca219d12ffd36aea8243c86367c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BXS8E2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fd0996fcd577126da1f976aaa533287828d088abb33d65012a372cef58c5b1. 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/BXS8E2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce0ff2568512560d809a814b0f5e7823f09ad19536d1313cf87ebef633534c8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BXS8E2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9baa683232b46fd0277fd58bf6f50c722c5797f4009bc72599b46a9967b66c7. 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/ESA112558470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d18fed3923b94e82590ae683eb5df69a66a40d7d5de40a6ee5701c43f747d. 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/BXS8E2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266daf66c679359034df42ec68ff3dfc161042330b0f81a633a8f5f1f82ae7a9. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BXS8E2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71067221d8e77ca9116f5f565909c1e4b2bea6a0df4112c3ec504fe3e7019a. 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/QZWDW2534122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa7c14c4f54f972b088cb9529b926c14eeee6c5687a1fbeeaaec82863d448e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZWDW2545408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63339b803d7ff50e9c4a85b4b89974fc731ab7b3456984aeadc2e6169c528430. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXS8E2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f0ec5d17d8befcde9e47d0c0478915fd12a8d7ad9b55c1a8fd35b623f2a864. 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/QZWDW2596564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0c2aade2dbc292b59dae28d4e65f55c661dd124921ff81591390f500286a62. 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/BK2C92400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c0158c35b167b33b5301a299d4e3118477abae35d7cf6495e1c6e19dd61b6. 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/QZNJV2583486.