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 0xc8db9210984fba8a3b202093f1ef547b05f159e1b999c1c2c1558d5edaf447a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07ab1785-ae77-4fe1-9aed-2dccc1e5dfb6.json and https://artists.proofprofile.net/proofs/artist/07ab1785-ae77-4fe1-9aed-2dccc1e5dfb6.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 0x1eb1401612cc0dfd092eaf9ecb7a4e2eed6cdcea3f070fd0a1af98fdbbb69fdc. 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/IDA401805313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0fb41247787cb8171cae53c0a8307fc054feffac54f51c8a137502299ce47c. 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/IDA401805322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d832b991169f93eac3fcb483f5db2c292374cb269ca7a29521eb9787d89826f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:34Z), 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/IDA401805665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab47e3ba414c76296ac6fadf6beed47b8a856ff48628c89ffe33bb2f88ae3b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDA401805666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed6a340bfdd2a7bf195eb7c4629dce7698fe7d58b9355049de698628a85ec93. 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/IDA401805667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c348e5ca7f605c94697004a801b564dbfa9479edf9ebb1b204cbc71aa3d459. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/IDA401805668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec922e76eda522de1f0852996bd728e1fd6015fffa0afcb61d984da7c72b421b. 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/IDA401805670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a88db35259e60183770847d2e6b1bcbbc1bab0b5423290d9ed16d74e58e8b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/IDA401805672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab47e3ba414c76296ac6fadf6beed47b8a856ff48628c89ffe33bb2f88ae3b. 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/IDA401805666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec922e76eda522de1f0852996bd728e1fd6015fffa0afcb61d984da7c72b421b. 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/IDA401805670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a88db35259e60183770847d2e6b1bcbbc1bab0b5423290d9ed16d74e58e8b. 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/IDA401805672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbe992b75d128be021e4e819691d9649f7001dfe4df66735ac0dfbff72adc5. 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/IDA401402059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3f0e4f4eb1652536cda8b3224511e20cf7d189c4e5ccd748dbd3ce99662826. 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/IDA401402060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8676542b9e92ded0e840bf7b3579cc5f11caf4dd893bdc664f6b1bf47318e7. 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/IDA401402063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3686f983a47be4c196c2a4b1571bb7a57d5e31643ff769db70cda155d320473. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IDA401402065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51707b21070914dd2b18def0d54e8613f698f76891c6874190a1de805007c02c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:14Z), 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/IDA401402066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47066faa90a829819ac9a8af1718fef2202a02fff00b580b56e2d8096635e28. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/IDA401402057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240d0d4bf9fe881f4b961db108e19420da366a68a57244ffddbd4f1b48cb3f99. 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/IDA401402061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd4f542e515d8b9c04a0c8e570b8f17383640e6bc96ecfe367a6ae102f3599b. 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/IDA401401583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447983210075c0f39b3429c15a73738285ff524afb2018289d2044a5b6291554. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/IDA401401587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862abc2fa7914037b45c4b41dd9c3d4ad1f3bf90782f9e7665fd2e3dd17a1d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA401402072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e26ad0ea2e1f8276ef907320adcc50392c5f95ef3aa437dcdef6b669bbb483. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:31:21Z), 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/IDAB30600483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252f50a57a6ff4503e17743abb8b8b1349763c1bca8faec8e86f106e5a2effc5. 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/IDAB30600484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04197c10286ccbebdbb44fe9eb442126b1a1f050e760f2ca75b4b87ac8dcb983. 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/IDAB30600490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cfe21c886231047ead1527777cd73a82eff7123fd7f72ee8f94e9f19e90cac. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/IDAB30600491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad88be0f0fd038e05acd045d4d24c661b78a407e0ce3e8605f8cc8db7953b01. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IDAB30605243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3215568b1ade70dfffff03dcc18590b2ac4cd3965cecd3a438c0c7a478108f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IDA401300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dad4cb90ffd64eb18c2277136acbc15e85f7e5daf92c4154abffa9abe797e4. 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/IDA401300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40a7c02312a3591febb123a6a0500b4992d196d9472bd2e0429b062ae507a80. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/UKRKJ2100346.