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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb118a20f3910b86e7795340468805a4988c7b61551369d134d12dc713fd73ce. 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/d2fad473-909e-4aa7-81b4-8c181303c507.json and https://artists.proofprofile.net/proofs/artist/d2fad473-909e-4aa7-81b4-8c181303c507.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e2a53526295a4d4531c14c5f481d551992a6bd6643e30f009e663cb215c900. 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/QM7282052468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cca0b2c29fa743cd2f60f01b807a65f03e0937db8d9d41e387f93b9280627e. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QM7282052470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a6a7be80283be382efa34282c5fe2cf8a167d6fd5295110045e9361a372c8. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QM7282054075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ded5ff736287229372c8f685d927aafe0c9e0720aa61cddc8105f6ded8f9ef0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282054076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ca6d3c8205ce456e66ab086d3cedce8442b30129b45da40fdad203b8492079. 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/QM7282088231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc8f93db433e5f39735879f9571214614b45ab88b7fb65ad32c10bf8b8067c. 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/QM7282088232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27372bc3174c7ab24383353684b0d19e1b860efa1fdd147bb032962bd32fe8ac. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM7282088233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11579926a5e6bc9fd9d32e75535f58c22bfbad612da1223fbb14e824ed68cb8e. 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/QM7282022389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea10a05de5f4e44c66ea26ce4a252a3a59bb4b23faf9c0efac8f8760c7516bc. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QM7282022391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527a690dc45b106f1cb19bcf3a2e35fc959d336fa9ebfc9b80d307b0198b986c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7282022392.
Contigo Quiero Andar Espíritu Santo - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028270c8feb4e6e3523197620ec4cf68d4ff9bacaf686ea77277fd5878964b1e. 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/QM7282057404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471abf5bcbeb4ab7957b89910ddd831de6c05b1e8cd3ed35d98ab2ad2e2058cb. 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/QM7282057405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a33f4bf6dc937dd89223a9799c20fd5d4d1d55b1f2fca07db770c999458352. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM7282057408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c7e0862b1f86c923d0a3288d1ed1f8f8254926683e45cf885346760ff6bc50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7282057409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241f7efc1c7fd967a54fa4e05c2f1af7a78a4fc9a895df21b4eadef92eb3a6e4. 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/QM4TX2195146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887460e5b40b2c72d01d6d146225bb42431af794babc9162278efa4c8330cd07. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM7282112727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6d8c01af888df6d8d68ab50413dbb8d46c6cfebc1544427c597774d8d54779. 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/QM4TX2195446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbce7aa78ef101df7074cdb18330981e61a5f6d17b53c26c21cb66f6307e1eb8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QM4TX2195447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3443b54c319fe384b7aa5e24e9b6dbf1b9fa3bb0311e29a59e1c1de1e7b68c34. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QM4TX2195450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ab65e6ae02ced9889663daf52f82880192b550c64c62ebff6cf8dda255993b. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QMBZ92344476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49602b1bc63380010e784b8d794cd351027edaea1f2a95233bd700d4ac26eb9d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ARNFK2087278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4932deec46b60ac755fb68fd39c1d98aa6e6bb3c1fc075aaa09ac4c38cb026. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QM4TW2474746.