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 0xe1eb9de55c845990ad40c046248187de0b6dfb640d7a2cf259f95f37cc0e8e35. 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/7ee19764-386e-4ccd-ae57-2b85b6e84fda.json and https://artists.proofprofile.net/proofs/artist/7ee19764-386e-4ccd-ae57-2b85b6e84fda.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 0x107e96c3afb9a2d37074dd4dc9cec2ec1cea5364046fa0877866b8a150e971bf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:38Z), 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/FR59R1983318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb33175eca787f61c69c296c70936c7cb9fffaced99ab1f25b0cab00808653dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLRD51967558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f13c7e24e4fb3dffc4ab749bce9e2e9d94af9899cab697f444c0c7c65ccd33. 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/NLRD51967563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600870d9d435306cb9492f8f982034f987977fa25939b39d4ebe6d4f538f296. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLRD51967569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733cea7e50186af1fc0962f37903fda5928efb4dbb27b0cdeac6b6c90a3635fe. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLRD51967570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9bb9966beeaffe893c22dcd307c89b48732d34120fa1ce29179d5861a0d120. 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/NLRD51962432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04588c5bfd067bb32f19e89317c6d50a8e733b03b63d9ef466366b0eaa294d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLRD51962434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8910bf08a02c1a9bae1e64eee5990d859172543e95e94b7ab7d36d2aec873114. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLRD51962435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6d5de86d4ca00337e10da065218b1845303a1d039cb76480e81fcd827c198. 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/NLRD51962436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd214ea4b91096aec07e8220ee32b1ac9875bf1ca5c7bd70c245c9a990576a1f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/NLRD51962437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad68b8d8f6642564717abc00f1c816e426f94bd2389160f442a60c5d8d2b7194. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/NLRD51962726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d03265a7192baee7ebd94c270183d7fc474e42a2a967af8b2568f7d86d9586. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLRD52072581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b9a2f8b222cbfa054153d4eaf51b26ca7051f151b9290264ccdd96a55ab4c5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLRD52221557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0851a5bc18c009f95f7aec7a9cb51bc8114832607e11adb5d9d59b1a7c003f. 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/NLRD52221631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc6b15d5b3924a4a020eb92976b5a3da33f9733962d5cc86cc076fb56091aa9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD52072627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88d3b57ede9fc11a96fcef132227b85cedf685284197332eb22171a3510e77. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NLRD52072628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b49837456e1bea1572474963706095f41fe9a4f5c0e657bd5814f062604dd28. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:40Z), 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/NLRD52072629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac54a539459b41283e09dbe2c04bd0afdb4258f104e4d9275c4aff46d1ad9461. 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/NLRD52072632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6641e9fbee1e4024fd9d28668c465f5018f24b931486a66da7cac7ac8170f8. 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/NLRD52072939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152e256f8fe0895c7f0e97c3d3d7cbe1da6ac57cbeadc6a961eef9517977330e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:30:33Z), 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/NLRD52072634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f81bcf41991d0097eeb1b1474704fc5407c1eaeaf21246898ff8b4e5201bd3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NLRD52072636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080da70c46b074a03494d9dac2906b3d762aa32fc432fffd3ad4e5139b341c18. 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/NLRD52072635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f14acb0085f05b0bf35d18630412d50d1d44eb295212c7a8acfbc9ea97bc51. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLRD52072637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b9ab0f22ba5ad10d5ccdc63b32f741bc4d6612d3da719dad3db7e30853abe1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:02Z), 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/NLRD52072638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3fcff955f2f36540fce2b7e07f7615ef47c56c8ac50570e94b22685386abe0. 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/NL8RL2404992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b0bfc07954706be4e655a74a8183f0e16687a0401887eeef7b9094ee484d59. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/NL8RL2404993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2e4a0f6b34325a583fcb3dee8d01b74b6de63bb2e429db2ca0af32cd9759ce. 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/NL8RL2422492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aed993230720a9f145ae5c654a1bd0b8d6627a2b074e502caa80de574c3584. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NL8RL2429720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7f5c8362674574587ef8420755d06cab8293323b06dee77bc0c99011b1f9d. 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/NL8RL2443356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c29f353ddb52cd1bef500173260266b333c464a482e7d3205d4d948f383ef7. 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/NL8RL2443359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a515752b08961402a4a3ee0148304f0b6883792ffef72156773f42c87973a2. 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/NL8RL2443360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2e4a0f6b34325a583fcb3dee8d01b74b6de63bb2e429db2ca0af32cd9759ce. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NL8RL2422492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358fcbe488aa9ee70676400732e41e418f55bdd02ea2549c2759d8068d00aa30. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:48Z), 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/NL8RL2443361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2e514ead7b7fb19511ad5b54155068af5d3a71e6e4368328b4b46e4f6e20c7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NL8RL2443362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c848928d78f2cbb17865c1c035b14684cc95552e22fc535d36c72bb278eac. 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/NL8RL2443363.