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 0x85ded4e169325045e478f9b7d8878bec3ece3923c9a3b45fc23e7998db558430. 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/bbc5f7fb-094b-4981-9c35-69ed041c1b2a.json and https://artists.proofprofile.net/proofs/artist/bbc5f7fb-094b-4981-9c35-69ed041c1b2a.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 0x57cf085c5cefe5a93386aec95f6ae269db20f7e4b652b24ec8e56dfb82775320. 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/EGA272000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981b6978ec496fb793a6d453e20a7b9eb6f1b0a7d4b628fe73671ef8b17e6217. 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/EGA272000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f9e6f34326fdf44fb6cadda412638dd5dcbb58e753ef7713414a7ae1bff8f6. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/EGA272000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a6659e64a86b35cd1072c5ceef873ff25afbfba7a3261ab70b6200dc2a34e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA272000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf085c5cefe5a93386aec95f6ae269db20f7e4b652b24ec8e56dfb82775320. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/EGA272000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753856ce7970c53394cdc10d0d8053894b411856aa4f3d60ab057cd1cc1dfa61. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:28Z), 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/EGA010548876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1c19baa78f2c218125072408f5b893c5626041cb7635da69382ab331570bc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/EGA010548299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6ee77773e7f47f99021bf31ffa618f67a71454f095dac88a5e539b4c0e818. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/EGA010549986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9049c86c0bc9eab25268a946941866893107dd513f00a263ad1412c3e27f1783. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/EGA010553100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf756e90d32555056f176457d880a8a50526acb541f77235bccef581e31695c05. 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/EGA010555475.
مهرجان - واقف الكلام - سامر المدني - احمد الدوجري - توزيع زيزو المايسترو - مهرجانات 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb126f9fc24dbe9097c196fc0850c1d0f7364707d40c68b4787c8f5ec8a404d03. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR96X2385328.
مهرجان - صحبي راح -سامر المدني - كيمو الديب
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f734a1a6e3ff8b2a0e02b063f0d5bff1d330243e027d5b680cba2175859f2d. 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/EGA010557492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c5586135b281b4573cb41ed653f792f1c16c2ce670d9e167e7f8cb0d032e7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/EGA012502399.