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 0x3c151fdf7b0f96d191bfc78684a54f333022beee105065625391118e12aeb1b6. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f5e290f-c275-439f-8cd2-736a256a193f.json and https://artists.proofprofile.net/proofs/artist/4f5e290f-c275-439f-8cd2-736a256a193f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sven Väth - The Sound of the 20th Season (DJ Mix)
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 0xefb17631981785d7369e9d9c6d233777d89d4bcbe658c28b25918cf977ae07bb. 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/DEQ201901943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c5900ab07c8c2efe798d9e0110e39559304fbd4014916d4ddbda8139a0ff0. 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/DEQ201901944.
Whats the secret word for tonight (Arian 911 Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67dd227af85913d1260ba93fe0df989eb60fa9a63d935a3aa71ec71e5c4996d. 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/DEQ201901945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286b673247b11ccd80de0255de6af9f27deb35923f6de864caf2a4e8edbf9abb. 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/DEQ201901946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54987ecad5eeefc79a565e9f2f0e7950d4966428d14f9ab11e49b0cd2001659. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:57:31Z), 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/DEQ201901947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6873363e09447a0bee54784db4a37d1fd669c42affc5b0035507310d859f89. 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/DEQ201901953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a530774529b6b16d71a6e4ca5d719c1838d660cabe38701aceec1e83bcafca9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEQ201901956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6814fe78f514370bd2b81aed7bd261d70131d645450934444a09b4dfe1a9e7a. 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/BEN582300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481851d6ad7aee805aad9b76017bdc347c8d987dcee0466be867d947a1a14fb3. 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/BEN581400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53910e69abe2ebd158fabe71c81af7269ae9beb713d72ee5292c376b743d98ce. 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/BEN581400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0393348eb83a6ea3db75c615cb3cf2f94cc2362c626b62729617aac29f0ec32a. 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/BEN582200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b40fec2ec9371ca3467206cfcc5f441712ae15d2edb32a6836ed458ce957b58. 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/DEOO51300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6d93b7d3c5d7f2bfe3a6a0d44f19b6c4ecc2d66be55a01fcbef10851f08dd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:46Z), 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/BEN581300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f874ee26dab7bf6899eee40ea130e036ccedf11080b1c9a13edfccb7ce1c1. 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/BEN581200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a7ad7595d28959251e67232ea56e9e450bf5ba1f8f109206f97ba9a939dc74. 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/GBEXH1900447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b9de836290f5c7f03fe321fe9689f72f882cf1c28224342faa2a0d43e389f8. 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/GBEXH1900453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed914224d2b31b83771757e1a64e8ac7fa4c5e0acb4499574286126c3b1c4e23. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DELJ81482599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459d1677c9b42cd27af6838b58c58b714ccfd1aa7e4e38405d5dde1ad74aabfc. 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/GBUR62000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa144d59962b8ce12913b5a699edd94ec9041c15c066ccafa079a092fc261a440. 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/BEN581900614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7479b88885474dc9b1303e6d38ab764580a437a35ce32de06457b9d2faa93ccf. 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/BEN581900645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509e83be81ec616bf9a2b84e362d7cfd768ae0d7589ae73c8401a2ae48b4b34. 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/BEN581900618.