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 0x5ea07291548a146cba59b72999d8c1c6efd6b31cf03c531c33b799972c000d8a. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65458a58-69d9-4288-8d9c-a633c6a80157.json and https://artists.proofprofile.net/proofs/artist/65458a58-69d9-4288-8d9c-a633c6a80157.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 0x48f642565e97c9986da297d07f0b45610ff5a12bc93243c69699cbbb4d7426cb. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/PECR22501116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5836d6d86a8b4ebd48bfd17b9ce34c24d74478c8034689b11c0e100fd626186a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/PECR22501121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae668dbf75a7dd6a9302a41716bdfad9b8a01659c710dc0a89c5dd4e6ccae8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PECR22501124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a515558b5f1e31137b021301e0fe8394b1f5bedca5c9cc9c56cf37e0981bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PECR22501122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2750a62c707816413a8f714d2277af63fa04662ef534731708e735053cb0cbf. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/PECR22501123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4309342504410e14b9a3db65b80521cb8e6f02c26bf8375a07fc7ff006334. 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/PECR22501366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891edf9db97d3a965c8bec97641a2e610fe8d3f8d16a8cc3daeaa99c4e21f993. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/PECR22501367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204b8581a62aa4ea6e89b608cd63c996ea195062e2e14dcd54b92abab1786d81. 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/PECR22501368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddd8d819a4046d39b56cf8d751fead733a681787da7d4faf3432238d36a0c8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:09:42Z), 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/PECR22501384.
Interesada - Amante (Tema Mix Disimulado)