Marsel is a given name. Notable people with the name include: Marsel Çaka (born 1995), Albanian footballer Marsel Efroimski (born 1995), Israeli chess player Marsel Ibragimov (born 1997), Russian pro
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 0xcd4654e7c20f3eb58920d8e0ca0404435815c22c443f66cc9702556c0fb7cea6. 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/51e00ffd-efc6-47bb-ae0d-8722ca8d2c2f.json and https://artists.proofprofile.net/proofs/artist/51e00ffd-efc6-47bb-ae0d-8722ca8d2c2f.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 0x70c9ce2b0d65ac735f888e9e14bb5383283a9288821b04fc3586209678975b73. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:19:45Z), 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/ALA082000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aa96fea6d6b109fc0c68d92e6c65bb15a9020335133bc4db703fc1cba35c72. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ALA082100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe87085124be6f72a0e6a2c2c2b480aef6407fafb45efe74cdffaaa33d67cf6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ALA082100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53c422b89cd8aeebfa4972b6c0d274848e50491ba47bae08a0f5f9d86748d4. 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/ALA082100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0c4e9b4f1fdf42d48bc9a0a8a68ad2b64085faa7d1034127a000f3af5ae627. 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/ALA082200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c22a3efffff64bbfd4c8fa5e72e9680bdb9f517a53d78ea60889e594934803e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:26:51Z), 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/ALA082200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2331033f3e8750160c180b0ce12afcc31b00db0e43c6f61d6a09a6fa7d30ca98. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMHL2362872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26844f6d49e2d9c0817700570176a1da2006d7696605e64c377acb930cdae42c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB52389290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b490bd47838c05f2cba8b337e07d4c3a3236c262d47bfde53910c17e1d665. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ALA082401944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b490bd47838c05f2cba8b337e07d4c3a3236c262d47bfde53910c17e1d665. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ALA082401944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4833b192099132f188b1fccd8915a62c88146e37644490c255449c96032630e7. 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/QM6P42402364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b2e72abf520cdf28ce4290227f853e8a2fab07ea6ae419e7b3a6939f58440e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:17Z), 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/QZAKB2518646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600422ae68538a3a013bd1abbd07ffbc625797a9ab0ca0d138c19ef5373c1318. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:31Z), 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/GX7852501974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb908bad8b92354107fa5b21ecbaae76c8df49f2dc1524fe8b35e25e415a1f3c8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMFMG2528557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84487566abfaa24543fb1432465dbe65a569dfe62dad2a2b6dc2660ae71e9fdc. 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/ALA081900160.