Hayajan (هيجان) is an Arabic independent rock and pop band formed in 2011. The group launched their first album Ya Bay in May 2013, and their second album Khusouf Al-Ard in 2019. Band members Alaa
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 0x623bf72f5188e0b7ea51f2fb9b7f7cadee5b042cb05f155252611aa8d0cfa4bb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54eed825-7fe8-4acd-b8b2-bde6acae326b.json and https://artists.proofprofile.net/proofs/artist/54eed825-7fe8-4acd-b8b2-bde6acae326b.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 0xb53b3b0d7868331da09c0b0e160faca1407a46fedc86aad218c087c44f5e189e. 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/QZ22B2024948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad4fd0d5a45f54b35952b43c23f5345e00eb46f09873001d7a1d162fa09f1f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ22B2024949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a15d6f87a782889d795303bfc0c1f12a13ef5f5a6e4975f293ff52440c83a8. 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/QZ22B2024950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3de18c82870417fbb619428628eb37dfd9ecfb16d22b343df2f6052ee93278. 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/QZ22B2024951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5532d9473b9c93d9490e07e693c7c882044a9cbdd719fd6f13980abaec28c72. 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/QZ22B2024952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7d1f48d9a352dc70e6450ab9978bbb3fe20d323d676ff86b85fdd36896713. 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/QZ22B2024956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2b23cd22e361d886fbb973436357e79e1dd4c6e36aaa2108e8e5fdcc15bfe6. 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/QZ22B2024953.
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 0xac08d80665bfbdcd9ac05628241211e6c03a601712f201f78c7d4c1bd92e78e7. 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/QZ22B2024954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9998a9e8dea9adaa740ab319c1481a69b78a4a2831c095176f8ddc8dd0fbfd32. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZ22B2024955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196ab99a79208c24582d163c69260af46d701ae1a747004a8871ec291270f60. 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/QZ22B2024957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1568a65c77a0bc3acc3b07e2d08a1a866972d5144b6d7bfbfd363f221d76e85f. 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/USE830905352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf46e831411a5c389b69749348c07fcbb08b10a8a9fb65da698187bae3c72418. 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/USE830905353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafdc03252c834da38dca0f2dee726c3a14e1db4bd33dc744450113cb83f14f3. 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/USE830905354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ca25df4cf1619bcb6ea4a83bef0eba276d8bde5cf11e7f84133159229ed53d. 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/USE830905355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb482ed993c0b137a3cc06682cbad93ea8ad5056d76a3e7ea8d592df992be1b22. 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/USE830905356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaf31f3af1b99412e6280fc9c7ac001c6def55a3bd0cfa32673ea42ece4dfb4. 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/USE830905357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc0553bc3bc2f2b119ef6ac5bdf2029da1f7a712ae365d715dc7d8d3d29d1f. 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/USE830905360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaedfea38eb0048697557506318ae30055372de701da044572e59ae4ca7f9ac6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USE830905361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14feb2a0d3377cc04ef54027023d02574f819f23c5e3c02fedeac169d9846f9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USE830905358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e27d0a6d31210f0904429fcf7b7813b8d6d1c883e7443089c3c13127651ee03. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USE830905359.