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 0x04802243c2b9912da262057909c81179b09cb4778ffd89ebe5b5f0d8651287c2. 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/8897b5d1-fdbe-4b76-ab24-a361483731cb.json and https://artists.proofprofile.net/proofs/artist/8897b5d1-fdbe-4b76-ab24-a361483731cb.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 0x152fc0fb8dc937f6d1455c42ed26a02e206f1c6373280c5b86e98bdbc35bbd74. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TW2221012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d26e5577b3aa0bd4eeb24e83ece8d6b64a3918e085ded76bb35ab322522b9e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBRKQ2311749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b003c270f8c64e638814b93001039391b49191f4a9f1be3772c3e6cb5dd482. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZQAY2304453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f3179515109b80dbed380200cf27c5b2b9197ab0f024eebdb9843a05053853. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6SA2381524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ebdde3f0460c8762311fb334520690e26460a86ad241e46bbee7317b304901. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDM32304931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a58f5604d1edd81b000fc78e2e33b56443964a3fdf0cccb3f095c2dde8abbfa. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDM32405231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbe9e1737d00d16f8bad4dddeb039e27557790c26988709fd2de98e945277dc. 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/USLQ22180819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e521148181e03c0677c2bb1c71d193c28d442232b42d0efa8724d09b4e905e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM6MZ2518226.
Mathematics (Damaged Goods & Los Padres Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f810ceadc147759992d0e01337189b1d804ecafda8eab3ebc03c5efa5567e2. 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/US3DF2141770.
Runaway (with Sigala & JP Cooper) - Los Padres Remix
Runaway (with Sigala & JP Cooper) [Los Padres Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e80beef56722e0d8af2b3f19327c7cab0a565c0da29307faa9c897cf9209c21. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AEA2D2100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf5f7177ad6b81d720adaa065c6face47f05175c65a8bb88504ba93384dabae. 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/QM24S2106844.
La Tarde - Los Padres & CVT MVNSION Remix
La Tarde (Los Padres & CVT MVNSION Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97389d48d20f05f79e5fafb57d06c14f40097ca16fa47d2cf691627725297fb4. 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/QMBZ92284863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb124a5608eab6b66ed71cad73334f6bcc130f7b2042966c407171172c5b6d02. 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/NLZ542200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0f686fdda5da03cbff6c61553e34c69795b6e2c824bedaeed2f30312d485a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2400698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c625142e5986447e4f4f6f7614b112c522e02648a113cc9e412a36102cad573. 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/USLD91720236.