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 0x8412f1f2c2ec6c0c280b4b6d738f296d05b4303ea510289202d5cb0f31dd6108. 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/d0ac022b-08ab-4148-bc03-66540925fbe2.json and https://artists.proofprofile.net/proofs/artist/d0ac022b-08ab-4148-bc03-66540925fbe2.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 0x2067ed6464d0f3fbb7fc3bc37fdb645ba38f0fd4ff3afa9af67dc8823bbdf3dd. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:53Z), 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/DGA052306425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc1104657ee3799ea1deb38814d2d59169e9130c54fb64385accdaec85f569. 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/DGA0Q2392720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6753b2292e88f1c727f8097c8c87fa3a8b76d612ab49070204eab8e24c3cea6. 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/FR59R2453510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef76d68d7e7e96dbbcf3c9f6d45b0c91a9fd606777fad9cf019bf83ce66a3bd6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA092436195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabc501370f7599ee72bdc16b178b16bfed1b89274a512923e600b244179f2e. 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/DGA0R2454937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2ac0ddd1e058f617592aa327985ad30018681c72c37995ae1abaa49685de1c. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/DGA0S2407177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8f75027537abd71069d857dccc571d979b919dba8e49f9dc1fd35d59acc615. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR10S2523938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74506a3c05ed102b3374e873d32c194bad8274372ab81683bfc75f2003e81bd8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DGA092436192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78754202e5112629529975b45e66995863cbedb63f2ecc45fc058ba33d1a3303. 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/FR10S2523939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb968efbb3494a25e532c6b6f23c2347b1e948373d876a314bfd0d0ac85287c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:26Z), 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/FR10S2523940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef76d68d7e7e96dbbcf3c9f6d45b0c91a9fd606777fad9cf019bf83ce66a3bd6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/DGA092436195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218f90efa8f247372bd737131d6b4235e2444d51d0bb5a8d78ea47904f255cb. 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/FR10S2523941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae784d10e1e5575bf82d04f2fd393374a7a931d71b90196c6c5a9fd0a71cc2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:35Z), 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/GXF9Q2577788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97dc78632f2fa04beb6069f1be39777460da47ac4211a29c7a8d62f6744224a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR96X2574755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39fa53e724e6e3231389e8acf3fcd2e11ab2e4b46f45b4256ca35e1d5492c59. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202506252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488be72a9ce7b298c8d70954ce4b5866256d2bd39250abab433b59cdfc6ec52e. 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/FRX282577748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb52f66141ed19ec0ba1b9172d10c7f1184fa06ffda821ba72737a85310e3d26. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:40:48Z), 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/FRX282577749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e41698857f5c04efb51e431c4130aa55aed55be0406a807c6690420548f3fd. 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/FRX282577750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aa01772af41ecd6fce051c96ac3ce225819b53d13dfda38c0ba621e92b6ac8. 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/FRX872531345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dacc1fbcd6d43ca9bf482b949577d5dcd1178c8d637a412f112befaa396d519. 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/FR9W12240955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc434c43983c5421a3790bece4b936f6c733252e775695dbdbd7d2ceb015c7586. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872373719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be8da8b90bf79e9a6abd57d446b5ad67cf37ca025b732381f41f95a2da98fcc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX282281352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95047b1faf15864788895346693b665ccfa45d1fed0adb28cf9a248e8047604. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0L2374500.