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 0xeaa6af9049ed3da18abe771674b73ba9218abc6298e00258970807b9b0da0416. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46142587-e822-48a5-9518-2dcb362efb94.json and https://artists.proofprofile.net/proofs/artist/46142587-e822-48a5-9518-2dcb362efb94.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 0x0950c0e931926c8025d1206a3393c3c916a62485730a94fee6e8948b034ff989. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/DEUD42425640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31848d9b1afed17b5294644818cd827e7c4a62f35c03c8a23fccf56ca547a755. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEUD42425641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185c1754978d00099915bbcabe9ea3891787a7e926ae6bf7b36651c626add55. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/DEUD42425642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a2097a81e97a687985c050bf08e684c690eadbff6380dbb0162ef30008d0d3. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/DEUD42425643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2883cd38be27165767b59495a0de6e73c0e83f92bbea2fe757f5a3d11e5f2. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DEUD42425644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d203cdc7650646c271f885d0dcec55dfd3042cd7dd77e5ddcbd22b3f9a41aea. 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/DEUD42425645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4bcdfffa196ee503440f725a265faffaca7d6aef0f2ec76a215f4eb38d4c0. 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/DEUD42425646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea4a5308a5a0181124d36a09ac2d5ad0975c5bf95e9dd0f2cfb116b3f17dee. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEUD42425647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb317ceb7aa9790996bc90be2d1089d4f56712ffd747cdd785abb6f64ce0bdb8d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEUD42425648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48fa34c9960b9473d0331904e26e41ff535bba140f0b4e7167e501cbef5166e. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/DEUD42425649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3302bf43e205b879c3d5b41f31349e1c954ab2fc19302ebc0988a635ee1be6. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/DEUD42425650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6814cd1ddaaca6b97e06cd1e594ca1e0dd114f3b9af5c30a01dec7ba1ed9c62. 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/DEUD42425651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598af56a0f5d037dfa2ca9b4e89e13e28db7ffb37fe0a0a60e7ac862c1be75c7. 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/DEUD42425652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef59fd31e6a6074b8a55e2d91b85e2e091782418ec796b3f1d17663ac9533b2. 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/DEUD42425653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc515fa1dae6805a9f2d94be7d965623886e236f6c52211ba0a471c49ab3b0e72. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZFZ22586308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81325c358528198ce3e7267ffef7145483b37a753ce075551412417e5cf0fa2f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZFZ22586309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccefa98a400d4505922acd169432f6717493ee94a41679a15d0eddfe901250d. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZFZ22583617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c3123417f0c4fea899fe7a829b2a4c8bc308040c40acf61847385c3e9d22e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2316670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f57b97d69f8145289d4a0b990b84acbcfd2f226e78ebc7663946ef27e5e7d7a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:11Z), 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/AUGBT2316672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ee30156eb49ac0a0a18ef19d03b6fb010789986e32279735d3e6dc448d8a8a. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/AUGBT2316673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497ea65bf6eb3bf4a7f9393202f54a3c712af1640669956d2853e65fd1dc59ba. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/AUGBT2316674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79fd659cca1eea333a5c92a23665f40bc919ca89f8cec1cb4a21bc302107d2. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/AUGBT2316677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b52689b3c093dbe03df28c37b2a728cc118336cb30d92df3ba2763c4ebe3e4. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/AUGBT2316691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf421f1412ec71ec66921e948daf2640d31c92c62751d5bc231924b31ca7700d2. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/AUGBT2316692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6e3b44d5e3e75d19e79ce2a4ebfb0c07f112468de28ed5dc419b04a46df0f5. 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/QZDA62532964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d5a1b2d1f6f549bffe99bde8025d2e87d04c503a30f3703cd7ea285b0ca2dd. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/QZDA62532965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0097cc4efacc33d97b288ac96f44111bf43acd70ccbd3b97cb9b6d945bee3e7. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZDA62532966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cccdd5ba93688757a59b81bd017ddcdaf01149536da1df34d6c8d3bd2731d6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZDA62532967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a320d603916ad1ee8bf7d7aa6f9ef1df309084bc0c64d9344e8eadfc689eb. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZDA62532968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ffd0f83ad4d2b930d9a113dd918e8a9f2211b9e983feec362904b9dfc52ae6. 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/QZDA62532969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8e6a4b4649331268c4bb8645ef0d845e63d7d2dd93f92b0e18a695d3cac54d. 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/QZDA62532970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720cbe70e881bb735f616b34bb0147c88511432ab83205ebe60771fe940e8a0c. 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/QZDA62532971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd474993c03b8c0f81d35202fdf76d30253ec2249bba8f35bc685155f0d63a. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZDA62532972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2d2069644ba19a79f32903579123696b9d10b96d819e9ef2ab882f6333abc. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZDA62532973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec64a4f355d1aaad029f9a00de4a45001a75c6101ffa47bc0792ef119145ad. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZES92526718.