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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d783d41a09ec37fdbd2e7c23d8a74585435a4f74bd71dfc164314c23e4dac4. 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/26769b9a-9de1-4199-8d90-a757d4ea05d7.json and https://artists.proofprofile.net/proofs/artist/26769b9a-9de1-4199-8d90-a757d4ea05d7.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe8000ec6f898aade295083a24dcfb28f20b716566c49f9db481c817a69ef28. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US83Z2206911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf629767c5173464a99b31635c363b5404d745e0e9d100b8c68523a9826a1bdc0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLHR22200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbe5148e59b2a2dd1a1d5df6606bdd11130cf3b034b49cd196a6ed61ac55742. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US83Z2238317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1776c04ddc8a3f4c85aa1303a8bed5af10067e8a4a457999d5e753ab56398d18. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/US83Z2238318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0d16a88c471e0534b7c5b74f263ae47494d726409a96fe9b477d740f7ea27a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US83Z2238316.
The Otherside - Weird Sounding Dude Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e97777596c21f5427948be8e956e50daf187ff4a29998394bacb711d1461760. 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/US83Z2316905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcba54f915e561466d5eebd56470403fcae0b7c7eea6848de16ab5da3de15ba. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/US83Z2501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf219e5b9abe4358e38e402b0b11beae47538a7f69636eaed1521bb83a293311. 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/US83Z2505897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3d3a0ce120805483d23883e710ea33084d8ec2ce417c89757ed5984efebac5. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/US83Z2505898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5276ec6e08f5a8b238c3912b3ad6cd1502a62db5ca4d41d0c9f8c18b5764cac3. 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/US83Z2505900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9424673f4728da5e1bca1e8b609a6a278f365d82a9690e07268df2ffc300cdd9. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/US83Z2519246.
FSOE 846 - Future Sound Of Egypt Episode 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65727d9ffbc51b89f9fb28d2df2cfb9f2754bae992489ab9191827039541b2a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/UKRMQ2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c8e67d0648face91016435f69881c6b222d89bcaca16a9d2190942e16feca. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/US83Z2460466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1fbcdb118e09d846128c29738dd0f8e233b1db314aa7eaf85569618d851250. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z2460467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6768719f6cb822f417ad6659fcfd66010bf03412b7bc511a75842367d25bfada. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US83Z2460465.
Colorscapes Volume Five - Mixed by PRAANA, Estiva & Klur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa77c08a1974436098a6dae23b477ff2e538e53aa2a6bfcb7dbc70a530ff56c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2374549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc832f5330317a878b1e4f451650c48c27837c74446a6638a5d8352d6d5425078. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2206910.