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 0xc12448d2f239d3a5b2f1d175119c69e18278073b861d00088de77cb7449c6639. 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/1c5f8e87-fedb-4a23-8ea0-e01c046633d2.json and https://artists.proofprofile.net/proofs/artist/1c5f8e87-fedb-4a23-8ea0-e01c046633d2.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 0x659427e1137afd05c8d6eb6b697e0b2d5fef41daa6e67c96f58840c67138a1f5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZGLM1927461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26131349fe2b6466ac03466397f3dbd843b4f618d902b017fd8d2586d55e927. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US3DF2137036.
Ela Aprendeu Até Inglês (Tecnomelody Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9b9f7fa79d5f2da5f43aaad71433d4e2e4e47d1d77cbc8ba2f17b4e33474c0. 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/US3DF2137035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ce93bc30d2b257c8cce148305908bc6a5f58e5b1c5216d5cb354072137ad6. 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/QZNJY2106946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1399332d1603541028bcdf656f3bc321a9d6eccae0d3d3f0250045564c44a3de. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTVM2246628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7233a77bc81be7d017ed807c6df5b52bc083db7e2f78d2334307fd95d8c5bf. 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/USANG2450894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4275058722345c95099dec66a3436243518ac17674bc830f1cf8ec357f8c9dc5. 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/USANG2450900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eeded4ad35cc7fea61db71ce969d94f2888842cff43bb759cdf151af8a5bcb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USANG2479592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67364d8da6e5083cd73cfbe3b9f0296ed80f5e6689164f3190aefd6b1c6b3a0b. 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/USANG2479593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa59ae228c5643722ba4c3c3cd3df98d5fe5be5cd460ca84f9df2811d3e13ed. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USANG2479594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b9090a0ac46f8635f73bc5c58117ef6e8d0d9b93f4167033d2103ff28c47ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USANG2479563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2d186b3e26337acad156e67fffa4e9c078456ce893a4a6218ce86766bb438f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QM3DF2410646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f0d7aaac7bd3fdd731a350b62175930eef35d3a5d54128bc5601c891c29aca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:11Z), 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/US3DF2541665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8542d4b8ed3427efe34300a67de9db2be6452858629d13a0a9b3e9786045b8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2541666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda66cfd862b48bb7395a12476ac83033810a773c6e88bd0dc930d73042237c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF2541667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eff6016343c3d50558cce86aef0c13aff72ab821ebb56817b39d89ef91560d. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/US3DF2541668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faacaf01eb67a7eca8542b97dac95012846721a3a44900c55e7a4f305cca27e. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:19:02Z), 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/US3DF2541673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c68aa3ffff1feb698dadf706754878d3a9e478027d6b635a10cf882afa8de17. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US3DF2541674.