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 0x95ed284743060f58681505d90def38f547454bd45fdab8f4b6937fcad152a90b. 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/a31318a8-ac03-4b4e-80e2-ab05dfcc4055.json and https://artists.proofprofile.net/proofs/artist/a31318a8-ac03-4b4e-80e2-ab05dfcc4055.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Batho Bana (feat. Butana, Phlyvocals and Berita M)
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 0x36a3bfc5c058e8573f4b8e5af554aa585391d91df59045c81ac43f2fdf6a1a02. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T19:07:24Z), 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/ZA82Y2100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80440829d64b5a0a201c1cc4f6b8cfa95fa9a201d192ca385b6ea5750ed40391. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZA82Y2100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab63acc7dae89357007ef7ad2b889167f22afbb9a9b17014fa80abf4b14963. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZA82Y2100226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04de182d41c465b4d84eb5aea093c63b42b9cdee6c8ac4e52aa2065f9670343. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAC012201632.
Sthandwa Sam (feat. BelloM, Epic DJ, DJ Seneath & X-Morizo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45099940c63c8622548f2bf6a8ad7f4457e41174473f405aa737d6303dbe401. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:24:39Z), 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/ZAJVT2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ebef28b9ea169f4a63b3aa8d180678187737ca65971c032b58643b3165153a. 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/ZA7622000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8174b872cb73187788c15600aaceaa478a0cc4c0c6872a445295f94e53452d9b. 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/ZA3SR1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016d821ad5453ebe0124fa5e22538572b06f70c95eb8634cbbb67f17a69b42d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZA3SR1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc2b33ee92c79212fdf4eb845b3ae8c3c74afa06ac6e4405ca5f9f0456a2e6. 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/ZAC012400560.
Wagana Nna (feat. 2point1, Gusba Banana and Prince Benza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6ebb0f09fc3a9a62d695773168a349b546f92ae1ed50127033989a2f31fbb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA56E2304303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f07027d5db641e88d3c66c38505a54f3ed65ba9ad2ef3da09ac64c8088525. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAC012301021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc288da3cd0e3cee90b23b8b998a11bfd7067cb2dcd45441fbfa89e22a3acd4d8. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ZAM141800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadaf8140c7737114930958b6590c544955f4cddc396250dc325f939014bd517. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ZA7622000060.
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 0x1bdf6731370bc026274bfbc0ebdc818b0d3ed470b7f1c688ba0e0e5b1b2dc533. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ZA3SR1800010.