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 0xe4f1c0a20188ec8cb0f0047ac020222c15563b4bbec4959a6a32878b32cb786d. 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/b78ec382-f014-439a-85da-13af41831cc6.json and https://artists.proofprofile.net/proofs/artist/b78ec382-f014-439a-85da-13af41831cc6.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 0x4c30095733992336f0d0872596849298e61e22f6f8e3c2ce1f1b1c2c675b5e8c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJZ2391469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c7bc735ea96db847a25c9ddb5401dbd49d7a9704321244a0711b9fac796ce. 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/BXKG22401221.
Oque os Olhos Não Vê o Coração Nao Sente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe4c97ea6ea07e35e6f511f8505f162044345c2c514a9f1bc1335e118aa72b5. 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/BCZ582400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3364849f95dc360a9c001610f3c49cd58c5838950987ccbb02a0e825098ffdac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2457088.
Beat Bresdilei - Uma Sexta Feira Muito Louca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833ad68fba80f00398399d797d35f3e5a6f25812f781714e0315e8556c9e6cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTPX2376462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a1af27fed1f6df1059ddaa483e982c0da42bb63c3206d39293838ae4859d90. 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/QZGLS2552774.
É o Gnomo e o Gbrisa Que Lança a Competição
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5bca9557ce9b27a2e2b80429a4af857d918a138a7980fcd5237a5f5925692f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM2541985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d012cfadd4b126de7aaf02639ac7ff23aa38ee0249de43990972d59715030. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGLM2545751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c6404b9b0be0c60db01bc1bb9f6ac215a760826d6f0d59aa1eb1405d0d9899. 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/QZGLM2544948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582af77c6b3190c1baa398774891ba3a857e2821365c36bec3a930e9b54866a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2499970.