1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x56dd9c054ca0bb18d5af90559fa8dd586fc2650425f992604336685d00d96f4c. 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/be98e7b9-1e8b-4381-b138-f2b0926b7d64.json and https://artists.proofprofile.net/proofs/artist/be98e7b9-1e8b-4381-b138-f2b0926b7d64.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 → block OTSBitcoinBlock must exist at that height 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 0x941a3317f38180dcbbcf59a9c646e2fdbcb83003b94d7baa2b08bf52195c68ef. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLX091904033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83645d77196dee3abf9a9d37aa0ae1fb0f2d0d08c19519518e3466d584c8cf. 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/NLX091904034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376ceee7b46518fd274e986aa8560418f9500f9f89b4e68b677aa38608d6e53. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:21Z), 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/NLX091904035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da71f41419084c20e7e26288b9380cda9c8fa3cc37b11f0105ffbfd02b1183. 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/NLX091904036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515ee9d9949fdcdb26fc672dccb225487f234d6e4d9106143d38e4e0bfa3fc25. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLX091904038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c8f215ec8762f565d8d66cc8eaaa309ee4f90759954d12033028d9a7b8221a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:05Z), 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/NLX091904039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa8cfd5a7230453dc1f51ac820868c7cfa0f9b9e8f9e6c47ad07c4be7b48974. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/NLX091904040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0003dc6376638e70dfeebf70c60e4888882fbac5a9b0b7b27bdbd03733f2dce. 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/NLX091904041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82ba9e1d213d1d7087767a4137bc700f3a5b5938d98d7c86ef96a4f9fadd17. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/NLX091904042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d84e67f176d63a1dab8296215d6ee221582d9cfb1e0183d00b5f69660fe42fb. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/NLX091904043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57bce9da89b6fb7e4afd538ecbd2c0d6603891f0cd264f195e808f0c6752ee9. 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/NLA630500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cbe33d8ab4bced9a337cde3af5fe41954f66845749ce6997c212e99ec6e975. 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/NLX091901027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4441910190a83b4880191336ac7431b7571f128d5238a07107a2ca2ad7699d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:21Z), 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/NLX091901028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562b6762a93c2b7721db92de3e720ee64b48ea21834cbb6ede3f2353557f4c3. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NLX091901029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac82759854ee67485b282e5aa282e93c0b820b3bd61644b559f60d538b8643d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/NLX091901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3421aecb87d8bf785fc5c9ac9a4d5b45ae8d467d2b2c957813e07a16ef1b6a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/NLX091901032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b8235285e9534db9b2c9c58b2510bfbf00b9dd6452d9b7b5ffe0d9505a4ee. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLX091901033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c181c9ebe89bfa5a8d5ca19976148ae9b8d29727aeaa54d4bf08571dfa5d6. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/NLX091901035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab253b628d264d537e38be94939d9a732b70d9e88250ea2f6b8ced54f8359322. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLX091901036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608548100d65784ddc4f5bf550075744211b4c0770bf6b065b5dd11ebd313424. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/NLX091901037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9b493d0c36b4c7fec2ebfae72cd86132dd97fc9ad17606d91f1ddf38f50f29. 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/NLX091901016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c706a17a360a811344ee8057d985bab9706fd37a3ed7b7bd2b73c6a07c5db. 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/NLX091901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e918abdfd55e09b5a6f7d2c0748c04c24a885965f8792499df28b14714cf23. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:59Z), 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/NLX091901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf272306ab77e7d03e377a2f2c21090586cd454a1cf7b227e0d48d27b98464d. 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/NLX091901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0fd8a84319687680e25d84abf647c59c0f7a2ddf6ce1d78e3d728cd632c458. 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/NLX091901023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229ca9d619c37b6d5262fecd7a301d6539e7a500ff4011608d2dc3dd60e61f0c. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/NLX091901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735bf0b1e7d8c6c5ae96ff402341da4ba35cd9bbb00c406d7d80c9d761b42f28. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLX091901025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9726e5eb13958d1eea26abd7d860a595c4da48b7badfda7e8d0df5c7bb5ae0a8. 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/NLX091901026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393b917e5f1ce34cd18f669ea0ce1f0c9f332fd6ebb457ad2efca09bae1186c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:09Z), 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/NLX092200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1105d606e78eecf881cb00230911569c48fdc196f965d121d988837e13e55341. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:24Z), 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/NLX092300210.