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 0x8a7808c0232481cd6c7c79c51bb8c838ca81304afeee83c592e9c17c4103da6b. 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/ff3efcf8-2f96-4791-a617-29eac936c07d.json and https://artists.proofprofile.net/proofs/artist/ff3efcf8-2f96-4791-a617-29eac936c07d.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 0xa47f64f3b72d38211442730acf2e8b1e8d47abfb22faf29071c046e797c8998b. 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/IL1042500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176930fbd58242efe4d9ea1ebea1218471b74b65facd6ec33f40960dbc50fe2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:37Z), 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/IL1042500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca8e1b8cef2dbe216b7bf7a486b34a8d9cd7063ccec9993b3e5f7d93d314d48. 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/IL1042500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81032538072ca8691b44c2328bad9610f725b1a361c8ea920c4ece4f60dffcd1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/IL1042500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a04e125da2d5256f93eedd3c837fd988f67fa2bed39e9a0e19afe2c8d32eb4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/IL1042500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622df4b1672af2db3bba6913a544124a8f2e0956da30523a44de9c9fe4fa85c. 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/IL1042500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d0dba6d71a5892d8c586eb206af3872ee27b313ce6bcf60dcdae6d88937a0a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/IL1042500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636a5edf8a16e7724eb18dd892ccf89ef6f105d80a3ba835b2e1fc7810a49520. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/IL1042500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc44821d8080f4cbd503afa1f5e802b324aadb188a0a9d84a8a4a232b958d9d. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/IL1042500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222fc64f0c3968ba94535e7bd19dc3e146cbc75f08fe19f4dec25c0fc94de3a9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/IL1042500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f26e44892b66d4d11deec7ad9760041912c36a79dc8f0555a526a7155dc408. 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/IL1042500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a468fc194e2642d8667a5d71335cb57c8dba5e7f634f2df1a071721814347b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL2952308001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8851b3c6b272d93c80dec37dc9a7239ee1fb0d6d5e34e91bbb010ab0e64304. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL1042402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02421fffe02214fe95683969251f24b976726de168879564eff8bd4b62bda38f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL4431400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163317f88e16bb1f33afefb40f9629a899447cd4e518bd4066e8bd8d0ce929a3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL7532421560.