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 0xa188ee602b13dbe2c65057fbd00d6ec13ece23604e70dd4eedfbbd5d5c0cfeb5. 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/f96bff5e-4604-440b-9dd7-3148d54cddea.json and https://artists.proofprofile.net/proofs/artist/f96bff5e-4604-440b-9dd7-3148d54cddea.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 0x2e5877f511dc277a7c118bc65bf6a743b067b489237db029200cae99a7e118aa. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:55:47Z), 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/QZMZ92174415.
Vai Descer Combão Vai Descer Balão - Base Arrochadeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac67f72bc869ae1a96705cef786bd827d9a7681bfcd3507c9a537fc151570dac. 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/QZTVM2269982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09748ded7a43733a3d3368aba93da187a709796fcf257d65c6dc25574b7cc72. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJW2383299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3a5f946d584fdc94af221c2dabc16279cccd28aa4af9e32ff001464fa133e1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:44Z), 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/QZNJW2440854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cf0546b3d1344f89eee6a7dbd39a1d0566b1ecd4f8da47c1689a13bd0eb9af. 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/QZW9K2494443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b29209a21549364e9a40547742953d6c025377f90fd81d28d65e1bf0aeb85c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG2584197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf38c77f4ea31ce430e5a6b3948bdff0d328d4033528f681e4469e58f1277841. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZGLM2514051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b67930cd3ab22449307bc53516b5d2f610c7906c62dfefc0d2ff71847748f. 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/QZNJV2549532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ece138c8d27929d24abf37a26c5fa9267ba5b54a5482f3b76f4f2429e34b172. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:44Z), 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/QZNJW2520855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d2eae906ecc01ef902b84d985eb69013e1936394b6830fd5dca8db115ec652. 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/QZTPX2504048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5431df6aae60254902f06998bb8019375533b85a9e4c8579c3d8c7a2d7a9f275. 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/QZTVM2517446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57917a9df19ccda0c3ade225a78250a7ab406918861b9da0e034c4a515e77144. 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/ESA112583172.