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 0x292eff15c0d2fd2f01d4deac773f78da121fa59a0a9e13660214f266e4e4d3e6. 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/190c95cc-621c-4102-965d-e6f8e6604e67.json and https://artists.proofprofile.net/proofs/artist/190c95cc-621c-4102-965d-e6f8e6604e67.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 0x9e7c0c141888a3678b1254cda0c6eca9f265426f2453a5a5220a4128764aafd4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:52Z), 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/GBSMU6044719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97a727dcdcb06ae3916be13bab90da3199372eda13bf5c9dd71c5760338a50b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:25:00Z), 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/GBSMU6044720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f62af15f8a13573b6b11a2f40e32deb541189e4fccb71b9b1abd516dcd1303. 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/GBSMU6044722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100f7d2b40a5d15e595b08ec69cd39ffdbde8ab1def714f612557a6fbd515279. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBSMU6044727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76997723075c524a57716d7e17140a38a100369a0502e0dadf5288b06aa505b. 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/QZXYG2501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654082a7857cf5567ce42d73bd60039da43664ebfbe82e78a2865fc90c3d097. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:01:12Z), 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/QZXYG2501093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11970a550f95be8ea5f7955ae81ffb5c8c0e53594ee41a07c87c34b100f9fb77. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZXYG2501094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3969cafd59c0f6735d690ba3e041e4f0c23c815b416e6d0275117a46cd330. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZXYG2501096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb99425b7d2f3c45c7ecd2725949363f124688ac83088d52614a121d14d1bf94. 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/QZXYG2501098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3867281c9aaa443ea3f04715da229e875b2c91461faf917469609bf06adc178f. 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/QZXYG2501099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27575bc1a19db41c0b66ce345728c4b3fbb94dfb9d6306e46599765d3e09b24. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMEM2575712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c94a37605f9b79a0e7a2730936805c9378fb17f4858ef75b1148ea382907864. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZMEM2575714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa161a283c953cbbf19d81856c156954a73a6ac62723b701984003b5dd98126. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZMEM2575715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb887388f00d53fdaeef14f045d432652ce469798ef96b689b55db63b3fa3dd1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZMEM2575716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1915d1a07435186b57ea5a5e0d910884507bceb868201b32a7ccd7816dc50ef. 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/QZMEM2575717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2119ba118cbcd25a6ea550e3296d6eb81d6eb8ab0653942634aad619a6b03b3a. 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/QZMEM2575719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b5185628d8ae89df57cd1e8e8ee750f49ff1c499d9ab31ff1e376ae4d408d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZXYG2502121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5340fd65ec55fd67ede1e42fc64f0c58b93dfa251023430bf3d888a53fe27e2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZXYG2502123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c5683d2fffa0b83ae241f7a5128c68f5631dc5b125501dcb82306f83bf877e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZXYG2502124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0193227342755437e67f276282cfe5a897a7084b96ca1ecba94ce553c75305c9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZXYG2502125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169eeb51c4bce55013f008f160d1f0642b014c717fe354d0322e510cc046d445. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZXYG2502126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa016846e922fbab179dfa6097fc2f066fe794697bb5520ef7d62bcba47e2bd12. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZXYG2502149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe936423358e63ae9a85361c73d539c958f22ae111e19610290c75b64ae453a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZXYG2502150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ce7f69eadfadcaba885904d6a7cc0c5efce1f86bb8bf3cf174f5d5fada693. 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/QZXYG2502151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f7bb4e4170b1736ac5dc73e7863f15a396ca8b8761b80ac9043b2d2b7189db. 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/QZXYG2502155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7387221f9e6e286773d74b46e83134fac9c03a1867444e940fa944d71c0b75. 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/QZXYG2502158.