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 0x0a8308298ab89c3ab2b2825fec496ba2162104d7661b46bb1a40847ee83370a2. 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/b3aee5a6-0e59-4553-8feb-0737b81f95cc.json and https://artists.proofprofile.net/proofs/artist/b3aee5a6-0e59-4553-8feb-0737b81f95cc.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 0xe1983f17cb019a3d1a887485f69697597bf0f3265fce990401c5e982a232f330. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ2J21510202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49584f58495349a8893bd126a7845fe56bbe1b6746dbca9a1cd3549e5e90a0c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZ2J21510204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8232ceaae4418509917c7d74c4d252a85c886ec59be932bf637bbfc36b8fc14. 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/QZ2J21510205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d24fc1a9477a9aa95418e614437b9346f38ba1a1cf7ddea98363cd72c68e7c. 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/QZ2J21510206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864e18d260077fa26fd5665b27e63ac2c34d9094887dc57be707fbf2b7f03e8f. 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/QZ2J21510208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f683df4fc4ee654feac5149af43b4a822a14ad8bea2560135001004debfe40. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ2J21510209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e976f770b186c021eaac15a83fc758129cca1fa5c32d48876cf5daa192b7b9a. 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/QZ2J21510200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d24fc1a9477a9aa95418e614437b9346f38ba1a1cf7ddea98363cd72c68e7c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ2J21510206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c25a8c6936da30979f5cf9728d78884715f4dab7e88c955d22a6286c056f19. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZ2J21510201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49584f58495349a8893bd126a7845fe56bbe1b6746dbca9a1cd3549e5e90a0c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ2J21510204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e52b01f1e3b0ca009e4ca96038e4eee1228cefc84902be48b3ccb711073676. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZ2J21510203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2182a2f53f9d6c8fdc0c7900cabf9d04489e2472985cacae836efc50b8262. 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/QZ2J21510233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886102609c731143e277a0130734d42c32ff2079e27c0bec933846dd33e60b3f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ2J21510228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7458950ed2fe2f359221d0822107933a94ac2b0798b5fbff0619ba1130e64. 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/QZ2J21510229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864e18d260077fa26fd5665b27e63ac2c34d9094887dc57be707fbf2b7f03e8f. 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/QZ2J21510208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d176f704a6e111b57927ca881661c0e0023390f02a319cb38bfcdfae6624205. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/QZ2J21510238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806d3345aade6ebce78b93b250a2c74d6415dc8ea512429efea49acfe798b885. 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/QZ2J21500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2e1a64ce33f689169585eb6e98dfc3939aee3a34737160987fc7bd11dde33a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ2J21503126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ee96d6a920e129c3dc0a51360440ebc9f317da444691c1f9fd30948d5557f6. 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/QZ2J21503128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573c1d431ad3baa7dcc57923cc05299f8cf054ea96385019f01c52e0c63359a4. 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/QZ2J21510234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1983f17cb019a3d1a887485f69697597bf0f3265fce990401c5e982a232f330. 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/QZ2J21510202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f683df4fc4ee654feac5149af43b4a822a14ad8bea2560135001004debfe40. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZ2J21510209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c25a8c6936da30979f5cf9728d78884715f4dab7e88c955d22a6286c056f19. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZ2J21510201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e28726ecc47cc82ee8f171c5636c4ffb236f809688311795a6d96b412241432. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZ2J21503123.
Adorando Mkaddesh desde San Francisco CA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9d27a39c4fdde5f2db0d5b10aa59ef110666273bc64e93f6c821569acb7d2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWFG2577478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2292666999b671a223e97be2041a6066c19246a9963859f1a04e17c382807870. 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/QZWFG2577479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bec63103819a356d73cdd7bf70e002af5a41e592f31134511435d620577cfb9. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZWFG2577480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f88b19c85222c82b6f1d03bfe6484c56d86738c28256d422de0667885ff565. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWFG2577481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c524cddc89a92cff9d509b0619ab5ab2722c5aed85c311f4a9ca59552c9b8e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZWFG2577482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc200bf104dda55a99943ab68a120ecc80864b023cbdce0bacbc824a087eabddf. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFG2577483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fb937f9d4233650ae9d165e95d67128ffce058bc6c7a9d29b3c0f659441901. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZWFG2577484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa504605f6481d3fa09a9d9f77508dc69d5019fd0c8755cf89c668f100761f17b. 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/QZWFG2577485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7797ad4d81ca59d6add2141c823a333b6c108af032acdda538f18910b86388a2. 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/QZWFG2598958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e99b9c8b1b004753568f33b0d33369411ef7cd5e0ccefc22d9dedddb55dec6f. 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/QZWFG2598959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ac563dbdc10b09d1294d900aaf179c50c543db0109ed09d7fde91f838a6253. 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/QZWFG2598960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5cb7c6ba8a4ef2b2aa59b41249bd8c5a86ccc68fe4ecc98845784217093a29. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZWFG2598962.
Adorando Volumen 2 Mkaddesh desde San Francisco CA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d28814d7a0cff6c80414124a00c2bbb26c7ea3577c06d2246057243362c18. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZZ772517228.
Servicio Dominical Tabernáculo de David M´kaddesh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d8f303e54b6667ef4024b0290ee054731af7cc903e7c4068614dd64c161db. 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/QT6ED2581908.