Cephas may refer to: Religion The title of Saint Peter Diocese of Cephas, an ancient episcopal seat of the Roman province of Mesopotamia, in present-day Tur Abdin, Turkey Cephas of Iconium, among th
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 0xa6cceaa51d2248df91ff43a575173a5bdb93b542fa7a3f8363ed2123036e70f3. 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/5ba835c3-dac4-4733-a0da-2a9c2bd85b7c.json and https://artists.proofprofile.net/proofs/artist/5ba835c3-dac4-4733-a0da-2a9c2bd85b7c.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 0x6043b1a8587778b5d16f2602c72ed91ac3ade6c1dcc9299cb93d64dc06ad7fb2. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USACX2100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d18e0827da66f53ec6aa63df50bf6d113c2022c4f8ebafc9efab0adf9573c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAEH1913068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5ef55430b992aaa87c2b0548a1e342730b4d013a06922dc3f390e9f7032261. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAEL1918154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223cf36bb8680ecbba3f105ca620dbc91f74bcb6e5b1a6cc56b80f228f4aef1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USACX2100413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f020bf56158c895c6dbd6561c0aa8a1b3f90355690bb4545af6861828435f. 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/USACX2100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61a007b09b48a4552e90bd4e3979c5137cebc61092364e444047262546f23a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USACX2100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e533a3ed87bf07dc8984a72ad0868798b60cc9004e465141f35fd845b0ac7. 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/USACX2200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcddef85357f3edf34a49748df366c84c03ccadee954806080237a61f83eae6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USACX2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf1443e6afea31fee631e4e0c7c1b15ea3f8e0139c2057d724766d094b492cb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USACX2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d901fdefdabafdfd4b5eecba8729acb46ed75c971b99e36d0302a0b406079. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USACX2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d58ab15b80825c40f71ba6b830e5d58bffcffc3e74c723b440811a71063fa7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USACX2100780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebfec52bc51db2bb2ac70677d09b6d292ad09c38a9e04dbcc4dfd988e04fb2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USACX2300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec90a45e596e0453fb2defa39a6d7ed3d9f4c3f885e1fb99b549111053de831. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USACX2300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923e7c7456cb639c2842cad7db239c4953454cf590d5884b31a2c43de72ad6e4. 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/USACX2300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9c3b9df8eb68fc5221faa9f246afa259b105bbff8778f74c9beaa9a4a566b0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USACX2300426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457ad30e96ab20c4e2b41fa4952f240f44bd3d41f10f1b5366fb0266a4311eb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USACX2300427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209a224972c39dc86465ef624e9ee21a3be8f57e85d1ee61d4785f9a5ac3dc51. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USACX2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec90a45e596e0453fb2defa39a6d7ed3d9f4c3f885e1fb99b549111053de831. 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/USACX2300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83e1db45cc8a000751283b677689bf6dc6918079723918036cd923d873f7cbc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USACX2300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc624126561b6dfcca82db526b061540b7e58c4ab90574186f5289f2ea0976. 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/USACX2300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80d9f1e1d0b36ec7096ec9978a4eb6da63adaa1422cd81da404425bea81df02. 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/USACX2300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc71d52b97ecfbe665cc901dc21a99512d92c3a451278771b343f9535ec1069. 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/USACX2300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca7f267e4bb5824d45520c1548ef35eb198e1b22ebd5c2cb2a0d27bc461115. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USACX2300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff61d0a826da5c9f0c5a51274063e5c62ef740c4b7095dad41cc9cb2fe6019b. 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/USACX2300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9d7a0c3c0a816b78ae8e211aac17063c5474b0254bd3371dbcbb7505d4c61. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USACX2300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebfec52bc51db2bb2ac70677d09b6d292ad09c38a9e04dbcc4dfd988e04fb2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USACX2300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8819b08221095c8401805a4d05c41eecf6ad7ccf3e53a1195f87b3deb33f0e16. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USACX2300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84033a6ea51e8aa039d9b1d5529faae10a79f1ee0c73064fa9a989604bf59fe. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USACX2300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb8ec562691b62d31de6601581203c44c3273a3259262d456af2c09d896d05a. 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/USACX2300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957276c9242c7ed363750e9e4843cbb4e08d52d7352c19a90de7cc5d39895ff3. 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/USACX2300438.
Essential (feat. Cephas, StefanOtto, J. Carter and Michael Peace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6d46d7a49d06d229c40233395b17b9324df7561fb39f7007941cc80617fa3. 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/USACX2000816.