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 0x1f5a1d69896deefe44e86a9de059c1bd0bf2ce26dfe3a5e6c3cb8f4bcc350670. 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/a6f2ce48-b63f-4803-afc7-c9ec113ccebe.json and https://artists.proofprofile.net/proofs/artist/a6f2ce48-b63f-4803-afc7-c9ec113ccebe.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 0xcd79f7bd0186ed11b70fcbf5627e4b8a390839717b392f0bb4d774167ad6abb8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEH331903753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba8b465354e7f465310fa2de6bbcdb6f8dfdeb6a73e1386997b1ba897e67018. 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/DEH332404179.
Maretimo Records – Masterpieces, Vol. 1 (The Wonderful World of Lounge Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f22ac3dc4253688b349d64a8a0b1189dc40c59528b5d37eb1c24e358b10b114. 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/DEH331503117.
Chill Sunset Maretimo Vol. 1 - The Premium Chillout Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4b2ebe7f6ad9c048ee00d453f4b83260bc3f504ac0d9f4f4cfb0df0c3831e. 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/DEH331803589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb653a4b85efbb4bded9958fd5ba4ab8d8edd07707148a139730fc43696ca2182. 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/DEH331402787.
Winter Chillout Lounge 2024 - Smooth Lounge Sounds for the Cold Season
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a5aface98f609263ea3005576ef45bd308bd7a8012bbd5b61998154ccab2f2. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEH332204025.
Belavista Boulevard - Del Sol Remastered Mix
Maretimo Chill Radio - Best of Vol. 1 - Positive Summer Vibes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dcdaa43d6d9aa09f39342d5dd9b367773bdf453ca793cf1e1346f402919801. 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/DEH332203967.
Hacienda Blues - Oceanwave Remastered Mix
Maretimo Records - Masterpieces, Vol.4 - The Wonderful World of Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbffd2a6168cd37db0a5b3e389f8a6eb9bd59f7e54fed228122448a8e331503c. 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/DEH332304066.
Lounge De Brazil - Lounge & Chill Goodies from Ipanema Beach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb653a4b85efbb4bded9958fd5ba4ab8d8edd07707148a139730fc43696ca2182. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH331402787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd124b5f0015b4ebe3899eb3203f064f5997cea06cf12652d8d85fa07b8841bad. 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/DEH331402805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2a1837c2daae3ef79016d414daa222a27c64bf6173cd4535e4e96a47843368. 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/DEH331402788.
Maretimo Late Night Grooves, Vol.3 - Cosmopolitan Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55791c3c1f7521f12efb0f8fd3b60225ea6dfdc74a934aa5210e1b9f9f4e94a. 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/DEH332304097.
Maretimo Sessions - Edition Ibiza - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57a9dd2804a6aeb15963ba028f404f25e4a1677e3e7701996f3a18f8708fdf9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEH331302598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db8fee2847f071cab0eaddaae3933e38bc62a75edf3f48c70d278d0a40d5e74. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH331402928.
Ipanema Injection - The Bossa Master Mix
Masterpieces, Vol. 2 - The Wonderful World of Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01dd434eaefcfa0c7ef96436b44fe7c143ef22a2d10814dfdee8be061ed3c9. 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/DEH331803485.
Maretimo Late Night Grooves Vol.4 - Cosmopolitan Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0f4bbb58600eecfaab615e1472c486529fd82dcab33074b1f44b8e4e44684e. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEH332404174.