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 0xedc352b56542576371e5a8fb491fb3a417f27430ce8dc064d31d0a41c090ad3c. 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/d1fd8ea6-2dff-4bb3-b161-39f7afa7d634.json and https://artists.proofprofile.net/proofs/artist/d1fd8ea6-2dff-4bb3-b161-39f7afa7d634.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 0xc9ad513d8a99687e8936122a1738aa159ffa65db994e7e07c7a8c8b867367e89. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZAC012201604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69a1384be0a99c42da67e8d7a30e330282436f6c3ef340b9434c0aef710be29. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ZAC012201606.
Nka Mofa (feat. Kweyama Brothers & Uncool MC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67bd25487281cfef0d58501a26286c0d6b49aabc1a4adafa8a2b27b9c8f51a2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUYG1715164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf878144dd16ce1650de25f6c43bb5d70d5b4ef3b9ecfc792815815fba8be387f. 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/USUYG1715165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc9682e4f7e9c91c777512cd8ff4cf8277bdcbf75c25ec9be286692d49e2f7. 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/ZAUM72300966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9145dbcfd847682be7133077c1a3d5f57dfb65acb40a7e18c1f1d55517252f9a. 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/ZAUM72202526.
SHELELE (feat. Ray&Jay, Effected, Triple X Da Ghost, Rhythm Tee, Kweyama Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af3edd773b6c5370d70084716cefed879f6b89c08cd2d02f4f91e2e2b9ed1c6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ZA56E2315000.
Dontsa (feat. Boontle Rsa & Khvyv & Jaymusiq & Triple X Da Ghost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4140a7c67d040c6c02cfa191b03b947e74b2c7a50743678160be5250e55fe3ca. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ZA56E2201285.
Buya (feat. Triple X Da Ghost and Effected)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908659eaca2a383e8ebb4ffa726b1bf0702158a173e18462988f95305d8b2e4d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ZAAK22101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a86aa02ae2ed7ad55a8eb653d179f9c705afdd424346894483a481911077b9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USA2P2423824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f08736fe77b69c463c56f683113fb3321dddb8d33df09e7a65ac7baa333e6c. 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/ZA7RV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1744850a265119922dca0dadf74c0de05fbe2df2825306d5c8f20ec52daa2367. 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/ZA7RV2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210006596e2e958dee98a705efe431e174f5f0245f110e4789778e08c686bc85. 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/ZA7RV2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6cdbe4b5b06b8ae97d2c59c79b94e98e893093689d0a1040460b6454c1a748. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA7RV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15ca34a0a6f184138238250ff8e20c870514c7db0b2ffb0417053ef0eae1f73. 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/ZA7RV2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d8f062970d4f9f11d5625c3a9343496cfe7114e6dde3b89764053cc48098b. 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/ZA7RV2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc56c6f818ad3129f3c7cfe83b747eddf7ed8c113a7965a1f4c6f91f3a59ae8. 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/ZA7RV2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c6f13c949a9a3f89e053d8f3ffd4995ed66c56f6a886e58d3b48f351a72046. 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/ZA7RV2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb412e2731976e6b0e39b8b43026b00b2f8d744416772903c7132c1ba8e527791. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ZA7RV2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b295a7970bed820f56a657ae829303c2aa009bd0a5694604f6be0acaa4db. 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/ZA7RV2200017.