Intwine was a Dutch rock band formed in 2001 by five students of the Tilburg Rockacademie. The band received nationwide notoriety in the Netherlands after lead singer Roger Peterson's participation i
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 0xdbdf8c33ad174b042ffd20bfccef7e6949793a01c740988532327f19820fa899. 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/df86df17-5ed0-40f4-9ef8-e03e8084bb84.json and https://artists.proofprofile.net/proofs/artist/df86df17-5ed0-40f4-9ef8-e03e8084bb84.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 0x8822cfdad4dcf6c9329e8a8a239103c9d1988ba38599312b6fbc6d5a59cc420a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLE320300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255861f30bff3288c9bc4964970ef84a79811f0c3655610a77e10c28502f074c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLE320300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0a55311fdfdee161b27dff00731266ba8ce6c063f29abf9726d968461fe35d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NLE320300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e265c31c1ddad70372a922167a8208f7652a9595b16ebb07730435d96536fb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLE320300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd663cfc42dc72f02d1c4338a60fce7eaa594b108db8d85a74e4208705344bf05. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLHR52155967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc593e94800e63a0ffba08c6170b05c84df13bbe7b5e59192ec3d08bb944ec456. 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/NLHR52155969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d271518253e0611c93a3ccbe0477b371d1f9bb1e9b8b0e1a64ecc4680e8dee5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/NLH260400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245aa501acaeeac3c15968af1e83cec3b0cc5e86ac6601357197062fa349573b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLH260400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc771225b9710885b001d83eeec4077a791b727bbde20ff663016411d158905fe. 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/NLH260400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbb19f183c6f7f5bde3514dfb5e6133a7e822f26b1df733107f8cacfab190bc. 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/NLH260400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5803d400e8c32209d56ed90c283c3a20a69fab40ab85535be6090101c1c9c04. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLH260400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602803f2852244b9c46b718df2a9dea1179bd3823fda52ff22ce259e4ea9af46. 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/NLH260400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dfdd7810c48fe9c32124b14bdacaa46a44250847d7ac938d4bb2a21cdc7203. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/NLH260400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b067f770e74335708f43bf1bfb80b93b73e6ebf413fbc0df9dbbb3d54710d1. 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/NLH260600135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac957835e27498d039769264b31ba8f7d357a1072ed4464992fdb6ec1d5b5e2. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/NLN380600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf76db2d505046e34434b677f94d8a52b8c1f4537a861acc4341aa774e04a8a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NLS241201424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d25afa54ec83b7c9ba6701b4a4e0e8f9c52d472233dfd68640134967bfe83a3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLS241201876.