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 0x37ecfc53f0b25c9d84951ffc1db0e5703b2a783a794f7f475e8aa8bf4ccb50d2. 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/14e14684-c459-48f1-9c64-13da5301c52f.json and https://artists.proofprofile.net/proofs/artist/14e14684-c459-48f1-9c64-13da5301c52f.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 0x0dba2d83bb7ea311ddc205a11f4bc9f019de1fe3dbe58d60e25e96bcf1c8f686. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UK35D1700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a9a09988e56a0eda54776385c93bb02975b5543df3ca33f3f37a4bb7867014. 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/UK35D2100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f3f25e8dd5331067d43c7d66fb8d14a04cce66c8d9f36d12321bf2c8b6767b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UK35D2100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8d3361d9536068933ab38f4098c44e5ed74adde5b693ea91f0d5a495d95f15. 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/UK35D1800138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d159016744a7b5449cda2af562d6191cb9e762706f077bcce201eaeeeadb95. 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/UK35D1600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594c1abb23e4f80c975b26292615156391eac0c344df18f75e8556204fcdd482. 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/UK35D1400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107581009048382d9a0898d7783476a7e3f48adc010b20751db8ea99dc8e9662. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UK35D1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bc9a95341d3e95ffc8f0b5af8a21b4dbb89471b85d451cf96b484b77eed71e. 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/UK35D1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f50a1a02a0e843e78bd50bdd801fa62adf7450ca5bf960f1ddf44156dcea3b. 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/QM6MZ2468322.
Again (feat. Ms Banks, Ms Dynamite & Jaykae) [Redlight Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e3371c1b7e1b3e9cb12f97e407aeeb7030ff880328fab43ea7e5fecbe97f8. 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/UK35D1900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6f970d99c50540bc310509f41a5b744580d95c4571a9df8bf875112778945c. 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/UK35D1900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81431a8cf96dafb6a63b55e5aa667402eb86b5c3b71a425d47a15894c567a71e. 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/UK35D1900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcc3ca91257fb24290af5b9f8f2c4fc84f61d045308e231bdbc052ddb6b9770. 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/UK34N5300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f680ba6770bc5d9b01d709a5a0a2950929dfe66170f01c094629c74c6fa9c2. 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/GBUM71111138.