thumb|Mazhar Alanson|238x238px Mahmut Mazhar Alanson (born February 13, 1950) is a Turkish musician, guitarist, member of the popular Turkish pop music band MFÖ, and an actor. Early life He was bo
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 0x5845d8e43792f1dda88ae18086000681d40a109cc81710730fbd1ef97f18e390. 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/2013ad04-25ab-42ae-8707-704e7690064c.json and https://artists.proofprofile.net/proofs/artist/2013ad04-25ab-42ae-8707-704e7690064c.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 0x3d29b61334e5d6c3537360ae9983f7f4b230b62da91af5662f41093e0c41d4af. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR8571001403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a171904b6b2e74fe2f700c34715eae28a431b45a951e82c5f7f3722fe62d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR8571001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02c04e427ac218e3f210b6ffb25e070faa8ab0f62d40100b9003b9d83887d2. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:10:48Z), 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/TR8571001420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549d5792afa795260cc7437a3227c79eaf7ec563cf40f4acce843002bf85e577. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TR8571001424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac082fdad23faae0a03e2b45c782d97d93d58e908a828a1fb14992802f4bfa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR8571001429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a3679e97ed963672425b51121ac5dcff2a804aead84fd9e08f66b965108b6. 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/TR8571001430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7800a854f1bd0efac64cdbcc403c73e75f2d69fbd02b0e63465a0e337d5cd6b. 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/TR8571001432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c45ed4659d37f58a4647735f36f62ea971afeb29140a3f7926bf85fb88fd17. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TR8571001436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37488ff332fbc706d346283dcb313dad82d071f4429b3c23eaee3ac1999c2ec4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR8571001437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978c785e946e8e7a852a51c9fbd72ec4b4d94399e951931c713976355e4277ae. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TR8571001439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefb4c16fa98e850d37798bb0d815dede81761aa0741dbb7ca1c140938fe8516. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:07Z), 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/TR0011900426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802583d8f9994dc13a4c5ca3ecd12aa86348ca59bdbead36cba13aab5707f59f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/TR0011900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be309eaf200fdf3b4a8ca42f05ba2bc9844d1ff21fccfa7127529ca097a3867. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TRA162200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3add871ebe322d4cb1d15af241385a175ce8675a3b55efcd54f3c8443b334f03. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/TRA162200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2213c548eb86d3e5ba62c18420e6945b3fdad33da60c4080ad3a7c55dcfc3a5e. 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/TRA162200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ace42b45e3dc21a32555edff66439ae8567be269b7985e5b3791827b79f94b5. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TRA162200414.
Güllerin İçinden & Bu Sabah Yağmur Var İstanbul’da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975b9dbd8518942aa50c45effd71b6b35439c7c9e28fd25e86efb6edee965667. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:45Z), 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/TRA162200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c69c9c8518d45207d054c08bee4fd2ff15cdb0f7dd0449a6799cf078befa6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TRA162200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55179b68b23dabe61fc8766b09b176aefe77ed236b26d01cffde0584c79d30a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TRA162200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5c5408d260ea1b294ba0dbbf4c628f4ca564762dd9a5a3d56ff630f357e6e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TR4352500879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d49bf881b23b04c2e0eca739d9a81a7dd7ef7f713fd04f12c1e3e9ff268fb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:00:50Z), 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/TR4352500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70186481f33f5b0d339eb8e047a44fd733d2991389605d9fc585912bcb1bd53. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TR4352500881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31c4a4c652e73cbd2fd797d0c1070f508a91a40424836c4a01988959b30c16. 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/TR0441414712.