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 0x7ef41fb1465fa87bb15b4138146769aae0fbb11f82e51f42a4f1b31562c4aa70. 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/8582d25c-cf4e-4e3b-8d9c-d3d7f6dbac0a.json and https://artists.proofprofile.net/proofs/artist/8582d25c-cf4e-4e3b-8d9c-d3d7f6dbac0a.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 0x8d3d87d7ef5ebfa89a7817115e48936857824b7b0d7ed3142d42ef740823cf11. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:15Z), 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/USHM82037727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e69089abd0b1989b2fef708ae4f07c261444ac7a39086f2873e36dd2ce0f98a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM22239533.
World Bank Enugwu Ukwu Eselu Enu Money Na Uga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b0799b031f20e330f9d078f60f4ae69558a1c6666c6972104dd40361dd5d1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:23Z), 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/USHM22239535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd20656f3381696326e86fbd71e5ff30be512866800523088b52c3bb1518981. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:29Z), 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/USHM92276564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53627e71c1d47b9e15730eda755a91499c700b8afee7230392b8c94ae7c1fd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USL4R2251200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee18e2c4ec644ee172c3e4959ab7921e894bc763a3240875c239ef7a3f5ee834. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:50:26Z), 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/USCGH2330231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7195fa2d8768d740881dbfdedb1cdae63e83fb8a1ba4c76b0e6ffa9a9750e08f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGH2350618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcda00731e5279c5a1696666686fe0b3e706c6c89d961d992b27bbd2380c4b8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGH2350619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3939df4510ad5e11888ac3385c78910d07c1094618d6aaebd183bfb74caa4378. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:57:01Z), 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/USL4Q2395403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85321d28219ae922d5ba52d0efe609b426aa7b146114d2d9a30b283046815a86. 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/USX9P2304946.
Onwu Chief Chukwudi Okafor (Amuluonyenego Na Umuawulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba17965b1f22b1a836958647627b9b4f71cbee1d40abc0af6b30356d89f26c5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX9P2369087.
Onwu Ayaka Nsugbe (Chief Dr. Akunwata Ozoemena Nsugbe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7be35f9d97a8d399c96c8fd847138f968cf1627a7addbaea7919fb6ef3280f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ZA56E2529502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2560e443a992a891269adec613af25d613362eb29a356893746a100b1721bb0b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZA56E2529503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3ce7d151e9edfe9a05181257a1fb70067e03bfb617f28a0247d42d0ae8b948. 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/ZA56E2529499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3b0597fd80cd478c4345ce96b630be5010624f1615cf0427a4c77a0deb814. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZA56E2529500.