Zula is a small town in central Eritrea. It is situated near the head of Annesley Bay (also known as the Gulf of Zula), on the Red Sea coast. Four kilometers away is the archeological site of Adulis,
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 0xf27fa9d9fcbaa76827973c6e6bd3847537aec7c94210152795a78bf7e2b4a66c. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b4827e1-dde3-45bc-8b0a-23c8e0055dd4.json and https://artists.proofprofile.net/proofs/artist/2b4827e1-dde3-45bc-8b0a-23c8e0055dd4.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 0x363bb498d4bc8ffd800295ceafb4628675805ceeb035f667612c460314357aae. 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/UK6821800818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cef45637e030d6d83bfe9f2d93671dd475c242a15a8907f177ec46293a1f1b. 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/DEG932100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479e40f480426e6d671de21556d93c15e6bfff2ede92aa7dc6394050cadb1cd. 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/DEG932100844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe336a51fdbc9fbb654e51d4b949738f183d1209123937df1487d3a0a5e04c04. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/DEG932100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551c809cb992acae2732fa65e9c585e0ad6e12e3d30d290ff3a9f9d68ea240ed. 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/DEG932100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1de29cce522036ab70a302d6b9b8d147fe034e2a62d94c99ab72f79f12a0e. 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/DEG932201517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1de29cce522036ab70a302d6b9b8d147fe034e2a62d94c99ab72f79f12a0e. 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/DEG932201517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7059e3b885e52567b5b013cdde620e797ed6c8a24c256f6b5f07e3748071a73. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRIDO2112578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf53e665af2d5e86d2fb10e0c385cb41807928f40e1276a2e7901e75a90b7284. 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/FRIDO2112560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc1b5d2faf9c6116f245b245245c20b5b09212b898183a80fec8cdd9f50492. 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/FRIDO2112580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf785b015d17faa3fb1c306de4972b14a308ce2d422a7681d089a2e95d8d1abd. 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/DEG932101974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc1b5d2faf9c6116f245b245245c20b5b09212b898183a80fec8cdd9f50492. 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/FRIDO2112580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf53e665af2d5e86d2fb10e0c385cb41807928f40e1276a2e7901e75a90b7284. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRIDO2112560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c1cced338e47f1f6b609b529a8e198cbb573abd695b46eb7208b05ac18ca09. 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/NLRD51632686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf785b015d17faa3fb1c306de4972b14a308ce2d422a7681d089a2e95d8d1abd. 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/DEG932101974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf04c76616a9e68e5b3416b5aaa144f18bc281857c13bdfcb98f393b80b7917. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FRIDO2112579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49474859f0d7e37bc1c1b64bd2fe80082b872b11cfcabec5e51985d493a4a77. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEG932100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35443e60418001244bd83787b7ab65900b3312acc7b5da86ca2e77c1d0d7bbe5. 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/QZDA52185629.