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 0x153b55d07c03a389151b746e687a045903a9f3abd4d5aa1b5f3678c92fcf0f37. 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/f203e23f-f8e4-4662-80e1-1737d13f2719.json and https://artists.proofprofile.net/proofs/artist/f203e23f-f8e4-4662-80e1-1737d13f2719.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 0x2583089a9305a942b0228c6ea5e49c93bf7c77e68c01a3f1f546d50b083d734d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZEQU2063953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da00e89b965304ec385babaf7d74437d4bbc6d37866831e627d5c482a719f4. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZEQU2063957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e83763b75433b92f34533a900c5a33107ebf9be44fc2baee9ea948f53e8e3ba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEQU2063958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205b2edc0972a1e9d08aff1b8ead87385fca0c5140ce7e19d9c4b2b66827147f. 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/QZEQU2063961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a2ddd88d3975f22d5337691f4b4fa2a5976f351ceb59473c020c2f651bd1a8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:46Z), 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/QZEQU2063966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc816b26abc72ac77fe1f1e23f07e50b31d5925a9a95a482a49d401e7ba9d2c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZEQU2063941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d195f365ad3fb4e41f15efdd417fd33b696c4819364fbb1df074bac14c4965. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:46Z), 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/QZEQU2063979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d6d852e8872b524f6f8b8d66d946cfbca6aa8ce05cb8d3437f499987d5cd87. 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/QZEQU2063929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070075a4ac23bbd69c4cbd1ae038180e73ba393819743a377df2500019e1bb8. 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/QZEQU2064256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081e8e3a3996004fe620b85b5d25600598870b6a0343cf36c1d0d6ebf51acf9. 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/QZEQU2064257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa222374b5d6d6056ca2c8d4746112bab175a85266f64b855df5082e6c9620cbf. 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/QZEQU2064262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a2058b7a826f84b4fbb0db5bd459d7209a9f38e983318092667602e8325868. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:59:28Z), 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/QZEQU2064264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc3b0ec055b4665898c807170a24b21bda3000bc8fd86fe3839e26cd1099282. 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/QZEQU2064265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7301a46ee27dbe2bfc1a28d18094773f417ca90bceee33d839dd04faeedaf1. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:37Z), 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/QZEQU2064266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b0af3a1dfc3bb996a805a1a98d479a7d98e0547619585d193b0d69b613c4b9. 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/QZEQU2109690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb552ae4092bcbf67a1dda358a9962f1c2f49feba87b724794ab91246a41c3250. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZEQU2109679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86014cc922ec6d6a8a57dc9aa3b6bd2c9ea429c31267baf0b7f24e5d272ac1e8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:30:02Z), 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/QZEQU2109683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1f479b6e34d25a8fb82032edc7ce2c4ee5d8c2a4fe11aaea315bb6e1d2db4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BXI8I1900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb155720ffbeb6cd025ab962ae0f3aeab76589244aa42eb563d39c412e98302e2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BXI8I1900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e89c7f442bd77de1b82c89df4aba12e7519a0ae1cc30549b083c6f17201b0f4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:30Z), 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/QZEQU2065072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb114475e48989ea60bac54a7e20547782a799e30fa6cec89c87e581fc364fda3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZEQU2065073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6be2d4a66504eea11996a0acb296fe261a5f520bf090d6790d0bff7a28570fe. 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/QZEQU2065083.