Ibra () is the second largest city in the Ash Sharqiyah Region of Oman. It is located about 170 km (2 hours) from Muscat and has a population estimated at 55,000 people. Ibra is one of the oldest citi
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 0xaa90e0dbbfe86791fcc4a9acb1c54baad0fc40a85a5c668a200022ab1d8e97a4. 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/c57bf3c3-bc21-40c5-b5ce-f5310da21d8c.json and https://artists.proofprofile.net/proofs/artist/c57bf3c3-bc21-40c5-b5ce-f5310da21d8c.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 0xd8a8c353d8bb2ca8fea4485dd31a0263b6f0be3dadc7f63dcf9eead100ba1a01. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZWFR2301364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b974606c5c37cc0c638c22fd8805e32b822e5ff170639e71219628f19bdf2e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHN52463313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21cae9b7876b5a191eda7501e1c8803f292e107d168a23fd208d769f54ff87e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES5022400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de56eb65373ce32b20480133b2bc41bf3a1c3b13d2b4c73a8cb0ecd5405a18. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5152401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e188deb7e8ab3d1be3e4a030af9fbe424df43fe9d14b86908b3b679611692dc. 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/ES5152500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de56eb65373ce32b20480133b2bc41bf3a1c3b13d2b4c73a8cb0ecd5405a18. 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/ES5152401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0049076bc7b2638cde91395455e5d2c276796d302f03358c909a5b637f3954. 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/ES5152500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f923a84891b9e8c3201d0d0d310b234ceff5b448d7b0be68549439833990e60. 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/ES5152500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb532ce24bce2d94cd1609760dac226ad0025b5c94b56532907466bff5422dd26. 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/ES5152500192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abf4d1ee09850c867f0ba54c350dbba5177df661d5efd0aa9db4430bf3c5ff. 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/ES5152500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ab644513fffc9c56b7d13b66514667c8dd2edee524e4d3cc5e4153c11a6936. 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/ES5152500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426187d7f419ef18c711846954b8b87850e9f1ebc4504fe8432adc11f75573a8. 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/ES5152500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d582343ef420b09daa2783139732d66fe0f4954f2b158d0e4249e537758198d. 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/QZFZ72323146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cbccdc1695aad8cf2e8db4ddc2a25730decf4354542cef0a4548bee08d02c1. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ES75E2401416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a644c44e76ddcbf957c4e2e0a415ebde55d9d4c9106a177fa8665759a7626be. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZWFK2300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a3013b2dc1038cc1cf7eb35a3c46a1aab517bcc871129157189a026f2db36a. 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/SE6XW2411600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12bd2883d62d543d2f6b9eebe732f5701a95e1025060687199551265a6a54d7. 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/QMDA62408777.