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 0x1e82cd92865ad07f20058e52b3491e23539ff08df6215781417a412f3d4253bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ff50cf3-a182-4d91-a607-cd140b52cb76.json and https://artists.proofprofile.net/proofs/artist/0ff50cf3-a182-4d91-a607-cd140b52cb76.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 0x9be04d9b414ed0d328a55917aed24ddf20aad0b26841eace8ce291e7e4311ed5. 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/QMUJA1415231.
Baja: Contemporary Regional Mexican Grooves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc09f14bf2c16abeba1ec1d8d0865fdc9e318b3454188af3e7144826de4a38. 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/QMUJA1415340.
Pasión de Mexico: Traditional Mexican Mariachi, Bolero & More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41cccb6e7e36cbbc3ef9181d2297243642c3dda633b5cce79b9c60434bc5119. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QMUJA1425580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73317040eed62a401d86ab5d0f19c83da199ecd973787a1a4a9cc2cc87b9878c. 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/QMUJA1425582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe35fe84092a3a552823297a4cc4cb7bcfb85f771a3b7c47e128d730008041a. 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/QMUJA1419314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48000711c524c2e637442e4cc7e936f02aadc51bdeddbc03db656ec587689991. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMUJA1419316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab7d8fb12a3d706cd8f760670633fb41464f6d0617588d7620fa3e85b5859b. 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/QMUJA1419318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34f62231f761e8bc0f7046e2d51e7eb1c6debc86c2487a3edd9903fdc5d63d6. 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/QMUJA1415486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bfaa304770a2492284339f8105fa91aca5809b1f2cab5564dc8d0dc4a3e52. 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/QMUJA1415559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb218a13558298ac503f204bacf29e4ac422b35218487991b72dc1bf92b997668. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/US4R31303743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be04d9b414ed0d328a55917aed24ddf20aad0b26841eace8ce291e7e4311ed5. 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/QMUJA1415231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b66377dbb1dbd8cc73f695cda99ee42866bee6b227c7d83f0649d903e8aff. 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/QMUJA1501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cca0e0f176fa179fc456dd45a06db7de00120e5f72cd9914caecdce361acae. 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/QMUJA1500371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6720a661164a3a0e01a3c0961389c297c6b92a69ff491314b2446459c8b8c8. 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/QMUJA1500523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ac7459e227fd8066eb5e4339871deda6deac8fddfa82d269d7ed98402b938. 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/CA5KR2259492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4982d39d439859b9ba9f5221ad83210b723f8c59ef2d6ef86ea504ee4d5c68. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CA5KR2259499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80d8990592435dd3d295877d8d351f36b9cc0b8c4fd7697f7a6e0232ec9e1f1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZN882556179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0b4cebe8d54a817c8b6c9c22507480e6a5a462ba3e7bf72c872822ac1778d8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:22Z), 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/QZN882556181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cbeca9609028e8ca9cd122ea332cfe6dc64b7cef51f81dcea706712fda17ed. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZN882556182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518eebaf345c1502bf93c40145e67ddb9bae83ed4567a1954d39facf50ecd6fd. 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/QZN882556184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04de7a86a416fb7a38b154349d092214415b4d24138f43e9bb2bf1e772a93d3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTLA2568503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdce11dfad6126a47c6a5aa7bdea434331c9ee69bce34e0dd2a15956accd446. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZYFZ2511346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef4a00110011dc8b2c43c2044e0415ddeed2ea43388cb44a5271e319651dca. 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/QZYFZ2517131.