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 0xcd2b7cd758ed8b766fba51789b025f3695cea7b3888e3535eec47dd7fa6980b4. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29b41f48-0654-4137-86af-1bf7f92fdc8d.json and https://artists.proofprofile.net/proofs/artist/29b41f48-0654-4137-86af-1bf7f92fdc8d.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 0x435270d317247a239d3a6a884ada3d6bd42f8c635bd274af7013622057423fc1. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NLCK41069773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8877b6ab3d2ebfd471dae301308062b54e30617dbb973fa55ad5d46b6181b99e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41069774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ec164ce958eb535065908bec47a69cb7b21b67a1808694bb10b6ebce6dcb6d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLCK41069785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e5409e9c9170944223bfdea6f6b548aa222ad56d8243156fec695d826e7a8. 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/NLCK41069786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2de58358281abf32b214ff114e1cd0c77dcd8b99a7dd6b8432c93dd4920291. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLCK41069807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe789b94982a7a12f8c728a4bdb183018663bd9c2a000f87f3526fa1212ee11e3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLCK41037789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63d551aa5225f8c734fa9ae3f43f8705da1bee31cb13cddecffc793e5fce34. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLCK41037790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacedf221120202c18aab8a663da0fb78231354af206e5ce5a9f7053e4a65143e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLCK41037791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9a2aa45156e5e99dfb714a3d4aa93e62965dcd86ee8d9bef09441a74f0c91. 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/NLCK41037793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c443623746d14e0bd4edece5a776c8d59e7707a76b0a7df7e7ff283dca5355. 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/QMSL31900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b3412139e5e29632a22530b5caa934df609b7a87bec4e2bfae013193c099dd. 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/FR10S2480635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe144a26be5e95697c00380b3a66116cb78592b06d6333a710c42e07b724a9f0a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2136077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b2814fdcef1529a8c6236336a2eb3ccf09d150b4dfd117e713823e99928f9f. 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/CA5KR2136078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec46f9c6b2454c37d676b4ce2eea59b93e6ad40f368fcf1d5890fb6e760de491. 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/NLZZ51500015.
The Suffering of Mind - Fanon Flowers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4b7f266ef6d954753f84ce4e47cf76b0f11fb0ca4b26628b0fb986bcb49134. 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/NLZZ51500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a82a8094b9206babe4a4bd6e0790dd7c2290bad2a39a650a69f82c76b482e9c. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NLQZ42400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31064898a9f29e47cd7a824e2340f95c6087a08b47e2e8cc7f5150c165ed7ef5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQZ42400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb475b75e83038a68d15a6cdb2607fc57205dbe6673c0e7cd038e4085ea792fa1. 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/NLCK41053053.