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 0xd69582abd02f15f706c08d311ff821ebefa60c96b15dfaa57ee6c9c52fdabae6. 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/47b3cfec-4be9-45bf-b4db-24b151c99fe5.json and https://artists.proofprofile.net/proofs/artist/47b3cfec-4be9-45bf-b4db-24b151c99fe5.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 0xd8da4f2a20ad5e34606019d41c4118710194d582659f11e070b5d8bf80b98d9f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEL021602018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8392a7433936d89ad7171424e290712b1f502772bdda3162946f256f39b9f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEL021702006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0035264bc7067c637aa8b500cc6aa2b7ea1db83d33c7063cacd63790d2e25028. 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/DEL022302016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c3f22c3c5177c9121fe4a759a55382c2a6235946b865ede0a07a512b3b0631. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/US83Z2421234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05b38cc0d99a90b7d7c3952b7a1cb0e2d501846d10ba29bbdc0cccc8466610. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEL022502014.
Something Unreal - Oliver Huntemann & André Winter Remix
Something Unreal (Oliver Huntemann & André Winter Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e08835ab87d3e3eea159a8799cdd55fd201ba34cc537465b82a08da17f13b7a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472278735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ee90996cc2eb4187519eb6a2a42cec80d06e4e4cf8859592a9e9c703077c29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL021902012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245157102e74b0c191f3a60aef6e46fb687793a60487e7621dec16de31e41d11. 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/DEL021802039.
Acid Boyfriend - Marc Romboy, André Winter Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7097b87005b0b639ef2f75e5b2080edc89c6fccf1c45db016e6777872a5e7edf. 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/GBLV62302955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3685a77df3ef6baa4680c2338156e2242bd4d61844ecfabea10555afd8064b71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEPI82411068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146aeac596641c3639708799710e76a7683acb9f86ecca1e2442071c4b83882c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEPI82411018.
Surrounded By Spies (Timo Maas / André Winter "Smack The Spies" Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65fad9b19be229e38bbb868596f256be0c75bf32a82b20d579ea4ac1ea0d421. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAJC2200096.