"Layla" is a song written by Eric Clapton and Jim Gordon, originally recorded with their band Derek and the Dominos, as the thirteenth track from their only studio album, Layla and Other Assorted Love
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 0x38fd802c8fd4ad5741e06e2d763e5a248db11a11465b86fb5341adfa8f9e215a. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85e0f8e8-d181-4904-9d0d-fb49320f3f51.json and https://artists.proofprofile.net/proofs/artist/85e0f8e8-d181-4904-9d0d-fb49320f3f51.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd5b20ea1cd45fb67fd9a3d1a66d8075b52f7792f5e89492a52c11d14ca73ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMF1445655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8d59e7a103abd72df333daacdfe8c4bce0a4ccc04eafc1fe201e6edfd6934e. 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/AUOD21301254.
Thando'Lunje (feat. Kabza De Small, Mpho Spizzy, Layla & Springles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecf06b269f640653ba326d6c04b57128c4f056c601631156306bff41b6ecd92. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZB88P2200162.
Dlala (feat. Kabza De Small, Mpho Spizzy, Layla & Springles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd5dfd74c1afbad465a6aeebfb0451a757baf73112c2ab943bc21d73b581af2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ZB88P2200165.
Inspiration Island (feat. Downsyde & Layla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f25f88c4bab9a7330027057c5a52101eab4943d75ed38e1de0374de74f7b4d5. 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/AUBM01500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6174483c67de0fb14db94878b52d9fd362ed86c58a91bb8888806009bfa0c7. 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/AUOB10500069.
Release Me (feat. Hunter, Layla & Dazastah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c2e5499995b51bb00e0fb73f90ae44a8345eb03b94d85bb0eee730133fa331. 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/AUWA02100413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc1f3ad001325985df191ac7f46da896637767264c1a2cb31bdd11def66682. 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/QZFYY1951950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e71816d321b2d41e85c89e801dcafac108fcc08a85cea510786a2610c26239. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUOD21000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05313a1c6bf6d10075c16359fc5ad58de0eb2391462b994ae6542e2727debd4e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMFMF1445650.
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 0x106687b95314b2be288941531303daba6483e22f5f09062a4051a1fa0f167075. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QMFMF1445656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd751ed231881ede0ae89deff22de2ed332de4910197202e14fb274aba25a8683. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMFMF1445659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d5cf25a15c8fd6198b6b73a0464bbdd4841b671613339464faead0344f0a46. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QMFMF1445663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fd74987dc95c45218313efe376fa60b553edaeb904659b245e4c58672b9bc1. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QMFMF1445665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a99d6b56d5e6fda64a9d4c0f515007c1b6b5204ad1da871a2bca488d4165a6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/AUOD21301417.