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 0xf99352458efeb76dcb7cf32eb37c6f0a86edb4b6a0782c4b205f25748d4fbd52. 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/60ff20b0-1ee3-4285-b181-b029c8ffeed2.json and https://artists.proofprofile.net/proofs/artist/60ff20b0-1ee3-4285-b181-b029c8ffeed2.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 0xd0a9d13f64943b5ba99319e72e10ff41193516954e29b73595ca48b095e90b84. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ5AB1940451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34aa8309bbbf18eddfcf050256281fd43e1ba27f2ee479bbf3ddf003de351a8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:11Z), 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/QZ5AB1940454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed118b15e4fe7842bf98649cd93b7932138236252fc1345d381df99e8a971188. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHZ52131962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970d4c5022af0507f46cc6d7a6eb5368e018a447b1d9d72430d6d4aa12189c0d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZHZ52131963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcd67df0b3e244f55faa3a531c6834982845a730aa5abe647454a64b6b601f5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ52131967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef36fa5545e13b8d8f07b6b62d193000f9b250a1772752fab2bd8a21587d97. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:34Z), 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/QZHZ52131968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b669a55ca14d297d79aa6f709babd6b0b293bb8ebbf555d6cc02e25481c056. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US7VG2210281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b01cdc96432cd32548cdea7b0a3372f98c85a83c538b75d927cf6bccfc608ec. 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/QT2HF2400183.
Corridos UnderGround - Edición Los Cabos Vol.3 - No Se Ocupa Mas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a08ba6de57f7c4a595397d73de1a5331f77f011ea68c696440527cc00b7150. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:59Z), 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/QT2HF2400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a46248be753c2e40c29b0b3d97dfb59c11d5a90cd73cb91bfa3c680e75bbd. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:33Z), 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/QT2HF2400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b3f7e8565880433cbafd1708f7e4af6cc106cfb0701ebf9f55009bebf7d74c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT2HF2400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec471d906de9a03b91601105f12ac926c549399835668991d55ff3bc2403c34. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT2HF2400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a92208c3938ba8fb4df043bc68473c09112055066f3e8bfdb319f09fd1518f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT2HF2400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0243a81937b1fe79c6b65776d33046d995fad439dea15925ecd1fae8ee7a3b82. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT2HF2400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda724594782a4ac4ec5b52a24a92badf56e46f5488dfd78f8d559107a08ae7d6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT2HF2400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7a08d4d92322a60dbaac2d7cc9b78757aa840f947163e68e6763e9fe831321. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:30Z), 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/QT2HF2400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0118bab0b0b1d421d494504f62899e8d3b660e8d384c1b7fd80a54c9e2da790. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT2HF2400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26da154f0e85d57ffb81975cb52d4c108e8499aa898b55182e1bd37a2a45bd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT2HF2400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7539f6dcd9e4f19018d3e436ac88abf5c9f8bb0c212995f69c83c41ab1e1506. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT2HF2400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6b7656a7aae137185c3733f50b93079a876ec7179256a2922aab86bc162fab. 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/QT2HF2400738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49526d2d38a7cc892d48d4b8751abd8ca1232d9d3c48a93b4e5892f9acf0d76e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:46Z), 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/QT2HF2400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7188ad0464072e636c1a3ea9de37b76a00fa2b91fbe267651959591f7de6b3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT2HF2400737.