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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6649406a5be39b413f135dbc4f0cdfe135f1e33e5542a3a1c473710e307d9bb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87485da4-dfb0-4353-b134-d16e44522351.json and https://artists.proofprofile.net/proofs/artist/87485da4-dfb0-4353-b134-d16e44522351.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mưa Trên Biển Vắng (Je N'Pourrai Jamais T'oublier)
Mashup Toi jamais L'amour c'est pour rien
Bài Ngợi Ca Tình Yêu (La chanson d'orphée)
Tiếc Nhớ Cuộc Tình (Si t'as pas compris)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb07e4f37b9ec15d606c918524d0f0f94152b0bb4fbe4526fa49401c125d2fe. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:08Z), 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/VNA0M1929031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4538c6a4194ae39e3eb8125fe82e522810d703eae84d6c828d96935f54f550b. 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/VNA0M1932872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a49a5436c83f031410486a05e351f5e4b2732f18e0bc3d4fc5f2cab248748. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:00Z), 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/VNA0M1932877.
Ngày Vui Năm Ấy (Magic Boulevard) - Lofi versio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb62e744db47328cb052e5b82eb8da78f013e40610824693b7bec9141f0fd565. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/VNA0M1933130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141d9a1f66bcc3f8e7978957a1c58708b0b5169ef7ce0b6de566078b6cd97490. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:57:45Z), 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/VNA0M1932874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03fbe13932c4b6303e96a3d8cb7b02fc5c90406bb60b8597d7e0af000ffbd17. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:23Z), 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/VNA0M1932875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989baea5103e51229f714a0f5fc69fc8e5837f2e6be077fdda0c1e2698e5a8c6. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/VNA0M1932876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a49a5436c83f031410486a05e351f5e4b2732f18e0bc3d4fc5f2cab248748. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/VNA0M1932877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e3e3ab8b589e3757330dce064e44a9c80638ca04d8d3be011693eeaf70e4f3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/VNA0M1934667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8742bc6110b6c2487d7c4b60533d8098afc5a3875ed2dd5b5c11efced27c7536. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/VNA0M1934668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be2ca801b68a72f9a93ffd675906b993eb56e4672132dd1af1d6d8f55767ea9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0M1828411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09c22813cc7ee1fc88d0b77d103d5339e85fb43d529defaa8f4ae1c37d7e2ff. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1828414.
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 0x993a518670ce348c33693bcdc1caa6543ac42c7f5d47b23d762c3dc237db434e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/VNA0M1828416.