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 0x6d407d607bca5df4491988cb5f5532d0224d0e7e84afef8e46e4c9735f5f95dc. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2ee627e-8e04-48d3-9981-68450e153d4d.json and https://artists.proofprofile.net/proofs/artist/a2ee627e-8e04-48d3-9981-68450e153d4d.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 0x229823a1de913b9cd9f4fa6624b25d2d7210067c0badcdd6c5aa75b518700292. 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/BKJH72400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4552f2ae05e1aeb504207752ab82e3c899fc9fb75817f41f999a7a5b429ea0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BKJH72500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008afc825af27284dfd99d18fe57d1c3aaee78356a8484486fb0750f0360ae8. 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/BKJH72400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647aabbd66c2c4cf94943955f20d14972c2e2ab5cc9d81a4ecd850dfa1e57d32. 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/BKJH72400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131a5a7d40e0c1b3d1ecaa4bc1045b0ce78f17fb3ff7e37c345d8da3bba97299. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BKJH72400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7751e4d6ad12929bc97058782a25a08c23f0993ecd155b2e3077ab41b8c04. 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/BKJH72400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1622bcb93d7116c2acdd2e42b160036733b1d00d3ce9eb2bdd1f91e4b8707f9f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTPX2344297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6194c68ff5cf6752d46bc9042b12ede15207619560e69028dbc2c150a2c2537. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZTPX2344299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f4e67f8d8a5567ef21cfc3bad25ad3b006f6a8c776befc858e948a7557dcb0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZHZ52033654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead10f71e9ffcd71551b2e8edbc7f3301571c8a64e3ddf52b0ede3e28329087. 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/USLZJ2559087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58c118035b58c628771d0baf6203173efff45444f12b2821b5c247bce98ed7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES52183465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e944a385bc8549ca8d6781175f212c0bbede7661441295d90b76095e96d2b3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BKJH72400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddb863ff51155ed666cc62a675a540bb8bf3873d9c1915cd4706b114a7c4059. 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/BKJH72400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280f1b145838b0ce55dc0cd50c7d06f582c26fc525e1b5ddd11ac2270a4e794b. 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/QZGLS2463459.
Mega Criminalística 06 (feat. mc mininin, mc sharki & mc 10zin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4f9db9836d448a026e55ed3069afad2c33e3577be6c69664eb2f245d6b07a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZEQU2139709.