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 0xa72ca75458009d066234fc59ab0637f81f25ac58598ab0f2f461510b2ffaaee1. 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/65a3f866-6414-4415-8cf6-65fea90466d5.json and https://artists.proofprofile.net/proofs/artist/65a3f866-6414-4415-8cf6-65fea90466d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Way I Do (feat. Petra Nachtmanova & Ceyhun Kaya)
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 0xa8f8b8f4b03d223d3cfbc5e2b44f5e2c631f34dd552f3b48d2a8197f72d7d5f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2032557.
We Are Katermukke: Ipek Ipekcioglu (DJ Mix)
Uyan Uyan - Anatolian Sessions Remix (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc86dae6b814e584c5d8a8b1f57c944fc77fcfeb01cd303ceae2e3bec9748266. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:47:21Z), 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/DESH42300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78c5a2649c5b2508e926690ac4d1f79e0bf6417aa59e93384d875a054e081d9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEYX82257594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506f3a4e1f16248d3b8d934698699a5485fa46cdab49256d6277d8003e2dd327. 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/FR85U2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11987326cb7445ec3cf48e65960ae360cf86ac8c51453369ea32f5fad1a93421. 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/GBKQU1558830.
Kendimden Kaçmaktan - İpek İpekçioğlu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f0eb621c13b17f268e2dc68caa8c5a1534886e933a2be6865a85e73f37b00b. 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/TRBEB2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4003ba99f296c7ed8f1a9c719d38ba7f39a8ee36934f2469d371660d79254a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/US83Z1825574.
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
United Colors of Words (A Lyrical Journey By Gülbahar Kültür)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462cae44a009431b6a6a6b67f77f4b170edbb962960795042316120b729ae1c7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEBL61263915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b8448274e8aa2cfbe4c38e7d1c60649503628f55cbe9dde4f15b804b5dea0d. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DESH42200124.