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 0x77046e2dd5d120bf29a093d3a9cd391ff005ec7a92b1e6d90a19a1a0a0d43e32. 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/bcd5e694-d014-4e32-838c-b05e8613909d.json and https://artists.proofprofile.net/proofs/artist/bcd5e694-d014-4e32-838c-b05e8613909d.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 0xbdb2ad9cd874d438341445f37e22201988609cb3bf6a53cc6aa8a97a68ea1df1. 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/QZF452001190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd849deb002b205eded5822d2164fad26550911d542b25a4500893b7f49e316. 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/QZF452001191.
You & I Neverland (Feat. P GLOO, Hash Swan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874a302d21b43d9a1c3f948b4fe1afc8d8c3a1aa9ecc0b5c42db20dcff80e73d. 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/QZF452001192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93212d8f072564ad82106873b154703498b81f121345312cbc683b13d6f0db9b. 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/QZF452001193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d177217bacb31ed0618d7e72a211cb5b5ce0538c7e17ebb056ae4f863bf0b. 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/QZF452001195.
I Don′t Care (Feat. Skinny Brown, CHANGMO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc0052c2d0c9edcd3f14124cb76bb09d30b726405798caacbe3dbfa51d763c. 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/KRMIM2427553.
Balaclava (Feat. Street Baby, ZENE THE ZILLA, Skinny Brown, Khakii, cwar, ksmartboi, Layone, KAMBO, Don Mills) - REMIX
Balaclava (Feat. Street Baby, ZENE THE ZILLA, Skinny Brown, Khakii, cwar, ksmartboi, Layone, KAMBO, Don Mills) [REMIX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02c024137411ca17c2f9150e8914dad9d23c37582db6409991d78464aa4bb59. 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/ZZA0P2309671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a859a5bc4b8eb565cf554e69628da6335310f68f5a0fc8e1fbf9f5cf0ed037. 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/KRA381900423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e520dc024bed1335f78ce7f4c950a5662f15000c73582a56f7d019db4662fb. 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/KRA382207386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fec59da13c71f83166d8abdba2c0ab48b506eb1ded891878aec13702971dc6. 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/KSA002300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6b6e03fb6bd9901bf56e9d33b4ecfcb2bbc71f33d28da743681241607c121a. 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/KSA002300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b794c4df76f309b41f7d046de40c145f652df76c18c8a0fa9e133511bbf40ba. 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/KRE132200048.