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 0xf7cdd5660e48dacbd2e441c462c332ea4289a8ef731797bb2d0fba28f31e9eac. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea60963e-8830-41a8-a682-66687f96ab32.json and https://artists.proofprofile.net/proofs/artist/ea60963e-8830-41a8-a682-66687f96ab32.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 0xab5f8f804717f0720df291b0f0a1640db822038cca0ef38b37aea6a0120f6e64. 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/BXD4P2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aad613cd9f714c447a6c21adfbd79b9423820564291386959dbf90f4adb36f. 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/BXD4P2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e619ec3f980cc75b8032755ae70f8c266a71322ce7d8ac4cbac23ca8fcbd3b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXD4P2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef669b0b5373166974bf82681c05d1b3cb701e8501b1fa51fcfbe4a1d8e1a865. 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/BXD4P2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358844c13f4674b8865fd2064efe870f35a3912f9d4986a5578a707f770a468. 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/BXD4P2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69610c0146de6a55765df6839b0413f5e6e1cd1a29bba8f5268a1df84e21ec6a. 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/USHM81680297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de7564191fc6f50e8da303b33c89e8ed7b5af563bed4bbdac50cc6f35e421b6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJV2478363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b26509400f7d9a415258841d687ba0536cc1240716b1c3d29eb1a7243723057. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:31:08Z), 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/BXD4P2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef669b0b5373166974bf82681c05d1b3cb701e8501b1fa51fcfbe4a1d8e1a865. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:22:27Z), 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/BXD4P2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5f8f804717f0720df291b0f0a1640db822038cca0ef38b37aea6a0120f6e64. 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/BXD4P2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef669b0b5373166974bf82681c05d1b3cb701e8501b1fa51fcfbe4a1d8e1a865. 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/BXD4P2300079.
História Que Fala de Nós (Simples Assim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda348f34092825df11aac31f56f77e343ae4875779e4bcc70b66d76ae7ee07f2. 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/BXD4P2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ce548dfe4236b5949e5782f046e0d751ac9a4314e4002966e046f623185edf. 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/BXTS22000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5970d1a79f79f91c2e18e03e9f5a6561298cb9e9154a3a07f3844fcca35396. 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/BXD4P2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd834f7be705b8f8c49ffda566aa4440a04a2a12ac4026df1e072e52c2130a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXD4P2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5970d1a79f79f91c2e18e03e9f5a6561298cb9e9154a3a07f3844fcca35396. 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/BXD4P2400010.