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 0xb9020e450689f4b355f4ffed63ba6389d081a1916f18c0213ca2df16693f9e42. 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/1670a782-a6fa-48b2-a881-e35ae26e5ea2.json and https://artists.proofprofile.net/proofs/artist/1670a782-a6fa-48b2-a881-e35ae26e5ea2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ain't Gonna Do You Wrong - Tribe Vocal Mix
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 0x5d8bd0f1ccb675350232c4a5a170eadee2f91457d35ceef68736fc5958d80c68. 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/UKR6V2322114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b5f11d29c82f34cfbdb3a1e8dfefe6584b8e4ad4262cd0448ea837020423c. 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/GB2GW0901000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400c33450cdfc3a76ef7483f7f93070489f9eabe737cc2057fdaa221b36c5d56. 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/GB2GW0901088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882b93c00186d2f12fc2375b916ae106dcc253a43b00f152a124bec0581894a6. 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/GB2GW0901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c07e14c7797663b2c64c362d216beda8f466b60a242649c5de91fdfb98de28. 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/GB2GW0901074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167624a9707d381f73933a0984c1b20c9eb5fbd47d4b60dbce42500cc04e8de1. 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/CHE192000125.
Free Yourself - Zepherin Saint Tribe Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940a20561a71aeafec8ac8b15ac45288a69ac171d495f0efafc471cb85b52b8. 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/GB2GW0901033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed29c5f00ae64ac4852e85fedd9fdecda4e570cb0aba8f6a805bab2807f0892. 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/GB2GW0900750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a854b58b56e49c8d1197084b3f57a503c89f1b78b0dae2ca4d6eeb80e56d10. 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/GB2GW0900888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa754cac010cd1838d7c9736a4f3510752f1b17051f47190413d150cd407781. 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/GB2GW0900763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e02fad65f55775ad11342d4734bc06e15414e074842781913ecb197f0daa8. 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/GB2GW0900631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60aaef60a143c6bb93bdc1bc354f1fee07b6a477d582ae093f4506d6f6db8c. 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/GB2GW0900421.
Dance Release - Msashi Roski 7 Min. Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ba15b28556067bd0b9a43e312d9ae2dc5f237dba83a8e9d371896047576d80. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:10:28Z), 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/GB2GW0900424.
Make a Better Life (feat. Sonny Harrelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8fca1c19738712b39117d184ddf781d696cb436378ade677b847a1c773c7a2. 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/GB2GW0900509.