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 0x224246e444c5cac74b5f2f1f2c5bc9c753d9b6a3852240de5984fb9d5996512c. 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/94b2d694-f66b-4c35-aefc-df2c4fae9913.json and https://artists.proofprofile.net/proofs/artist/94b2d694-f66b-4c35-aefc-df2c4fae9913.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x50bee38dec79fc10880045956211b37aa63fbc47267e02b7686078e372bda536. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601779 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd85f999e1c40dbf2562eb1b94163637afc42bbc56da29e027b55bea62b509e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601845 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74230ca05382d60aae6c9b409272d40eca68b4bb6d132454269bf4dabf392800. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601820 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430c27c588228b7350aa660b55e99425922ba08785e727fcd5a6d907d2a91f95. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330701955 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb055a401d87699a04d309ceccf741ca3cd03faa45fc4c1bf492956b2584dfe31. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601860 — a six-check JSON result.
Prelude to Time Goes By - Fly over Clouds Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0a7c51ac67e6228ff333ce2e8a50343025b161a07fb42de53035c1cb364c6a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601861 — a six-check JSON result.
Chillout Sessions, Vol. 2 (Sounds Del Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2227ee5e864a7a359ce9db3ce247b246479bbb51547c685f4f40104e462620. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330902119 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63d478d557dddab81a7147e12cb9aa41ad3934ff8f142a1cec4ae1a61670613. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330902156 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf503a3b54c2bd687872ece302946e9842bbfc433cf428bf2ae80252afa0f13ee. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330702006 — a six-check JSON result.
Chillout Sessions Vol.2 (SOUNDS DEL MAR)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ede63cd0d5989467dc9bec6c8d22e76945a8f3b2b8d7f5416388d9552226a. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL60609062 — a six-check JSON result.
Maretimo Sessions: Sunset Del Mar - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74230ca05382d60aae6c9b409272d40eca68b4bb6d132454269bf4dabf392800. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601820 — a six-check JSON result.
Call It Soulful Call It Tribal - Peter´s Groove Mix
Beach Grooves Maretimo Vol. 1 - House & Chill Sounds to Groove and Relax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5659100a7f9ad086a040e24c8a3aad4cd29ab8ab31b95aba409fffe4659136c2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330902105 — a six-check JSON result.
Maretimo Sessions: The Lounge Playlist, Vol. 1 - Jazz Lounge Music Deluxe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811210ff3e4ea608598d9054693fd8e272b7eb8825daa479b511bc175e1a37f3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH331002332 — a six-check JSON result.
Mykonos Chillout Café, Vol. 5 (Feelings Del Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a8099c656ab05e6d33348077aebcdff62797f5c53076370530fa97aa8b52d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH331002352 — a six-check JSON result.
Maretimo Sessions - Edition Mykonos - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9d9d04ac37ed278314e5a3318dc5ff22c7c8ab5d5b76b9b891b16593db0ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601721 — a six-check JSON result.
Como Aire Cristalino - Latin Remastered Mix
Maretimo Chill Radio - Best of Vol. 1 - Positive Summer Vibes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf1ec878bc21ea2934d9135a15365bea964077f2c9908d9f8c79a9bafa341f2. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH332203968 — a six-check JSON result.
Lounge De Brazil - Lounge & Chill Goodies from Ipanema Beach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63d478d557dddab81a7147e12cb9aa41ad3934ff8f142a1cec4ae1a61670613. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330902156 — a six-check JSON result.
Best of Del Mar, Vol. 4 - 50 Beautiful Chill Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd85f999e1c40dbf2562eb1b94163637afc42bbc56da29e027b55bea62b509e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601845 — a six-check JSON result.
Mykonos Chill House Top 50 (Perfect Grooves Del Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b541131429c0d6fe9dbe1519e3c8e57313273484e8b47aa7747c8d898589d98. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330601753 — a six-check JSON result.
Lounge Del Mare 4 - Chillout Café Pearls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a214fb9420fceff3cfa2f916c4841181b8788fc239b379a51aa950d0170ea67. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330802042 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc906ae950c6e9b8865fcd1081511de95a01a05cfa87683240529c82d63dec77. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH331002304 — a six-check JSON result.
The View from Her Room - Bell Flight Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0261433a9d742acf3b8655de3de2de74cece37e25accebf68fcdba36f24177bf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH330902233 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088434707174812b02f4f0fb1a6f56343b9b1d1b38ff852cadb40d9f0eb1b83d. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH331002305 — a six-check JSON result.