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 0x9f43a92dc9df9b9275dcc4edd614cd65b4591160f192b3eaec8894d8dca50eb3. 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/00d6fb34-c9c7-4c20-9e91-a0dab31c20ae.json and https://artists.proofprofile.net/proofs/artist/00d6fb34-c9c7-4c20-9e91-a0dab31c20ae.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 0x1d86451db0b117b267fb371a5b8b8567b7ff800dd1d6781b06bca55d892906a0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBL8K2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bd38c37d24dc7cc58e83cbf1e239e87f9927be065258db7e35ed49ee7694cd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ZBL8K2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1a930fb6e9950c4d88a4f4bd514062ec48671609bbd92a3c591702dd848ad. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZBL8K2200004.
Too Deep (feat. Dinky Kunene and TNK MusiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45206865cc0853a830a530d417eba1ddb6e2012babd0a2e08d70304b656ab2db. 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/QMFME2367945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bed38623f8436eb870e7ca7971edd59a700acfad373c8fd5c76f29cedb7a0c. 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/QMFMG2329425.
Turn Off The Lights (Woza Lana - Pretty Version)
Turn Off The Lights - Woza Lana - Pretty Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66dab88d451f2d50ab690776bc32f8153082f4a1c50eced7aa2457bcdca1c3e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM6MZ2415014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bed38623f8436eb870e7ca7971edd59a700acfad373c8fd5c76f29cedb7a0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG2329425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0411c343f1963ca604ce391ad1b90aba804e8f99c19e28673d802dfff358f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22453581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa823f49da4bda26fd25668c6ac1edb0a874b998fd1d399c0a55f11f9d7a9d. 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/QM6N22445554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab850dcc76ff5bbff165cc1834861851e214f5b0d1fd226ee3131f3eb63d158. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22445623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1673fa0a75f254a2dca774cce9ae9738aca97b16b09e33b1613aa55165c1cb9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22456023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45206865cc0853a830a530d417eba1ddb6e2012babd0a2e08d70304b656ab2db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2367945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d49927d0b43b161d3ffce36398eaac902b882c077a7fa8723f0b481e583e33. 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/QM6N22447960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65543fc74c7eee7e32029012bb5f23ca2a5623f5b1f39e797d26c92febe5219d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2541717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0411c343f1963ca604ce391ad1b90aba804e8f99c19e28673d802dfff358f. 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/QM6N22453581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48098d90c5251f29bb1c54fb3441454cc710f4b8ae6d6fd467695cfc7369d744. 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/QM4TW2541718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60467cf63b3852cfc372e2a0e8a3a317538f6b53be796966b967ca6b9855e0b. 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/ZA8YF2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ac980f622bc575929b7ed12bb3b4aa85a20e18a9e90e89742ac0011ee20f7. 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/ZA56E2304131.