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 0x28f0655235fe8463776cc01aa46906f6536f4e7d4f14cccbe9c395e87fc0e6e4. 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/7e0f0313-67e8-4526-9e71-4b53fc04f9eb.json and https://artists.proofprofile.net/proofs/artist/7e0f0313-67e8-4526-9e71-4b53fc04f9eb.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 0x3ee96ee4ed85ff010644432484d23dd9502d657a54665663abb2279e7bc8b370. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/SE6XW2228508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9fa49610258173906ab8e39db07c4fd8c34988913708d8e5e0574354b2be5. 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/SE62M2256976.
Call Back Now! (feat. J. Cartier & Lil Playah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe0e9fa5c33dd18b4182a5826b5d0c8d57df21fff3cab8a13f57f7de349514e. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/SE6XW2340002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0591669c2e64e340178a2c6aebdb3e319760bf18d7f71dc9d7e32d1927021e6f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SE6TI2389754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd178d7b0f2c7698129eb631b5edb9e91fedec0466b2906dec3f2d47c97d6e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/SE6TI2386317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3333ec6ffe9c278869e43ca7bf48fa1ee7c63515211e8d0de171fce49845cfe. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE5752433469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0481d415275cc22e3f90ef75908988567a1bcba9b23be4136fa432b29ac30852. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/SE5752467792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d89417490bac7e9528c5c6351161a06a22851a9edea5d7fc9b1d53245ca316. 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/SE6HN2430281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4648b4b19c6643bbc275e8e2e88d0b30163e7adc684d922c84a4c64f691b8ad9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/SE6HN2497815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd23cdd9743d70effc43dd98a3d522d10f61e41c39e2adef7cd60756e9fe1fd6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE6HN2430286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e2f810a8d78c07e63c2119a06cf2fb92138592a88b980dafd9ac54afc868c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE6HN2497816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba374fb7595cffdea39ea3ba1b0d297fcddf64b9103d38cbe7e377786b32c8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/SE6HN2497817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6890a18787ff143d1ecdff85eafbf67a61e68a3031d97f71d7d813205d8cb. 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/USLD91764677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72aa046aecaa64825d57df1499a1fb3ccdd2ffd14d2e1894b55bb9b0943be2c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLD91764678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6688352f5372a3fa527eaaf80daa1c1ca213b74d6833af20ac59dfc2e2eeb0e. 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/USLD91764681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecccc7684273eef69ce667fe01958f92139db6575fde88c67da271f2c4b404be. 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/USLD91764682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42ee033a39c51e965d20914a5f6546c346b91518d1f1d737c37ec675f32e3dc. 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/USLD91764683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dcb9301bf51cdcac90f0b874878e83e06900961d5079dd87832db58f0681a7. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USLD91764684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed443eddee6479073884b96b033f08d5d9a7b2470bdb78a5db6c3418f7abbd. 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/USLD91771346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af968ccd2085e2e368e877a325b8d7ffc1ff1ebb01a9c6a31cd47d5c0fc6887. 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/USLD91771349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c74ab6eda1621f5e3558bb788b0d2233ab96aaea1ac0f29ef7d22af42c1aea. 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/USLD91771350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6c65464d49ffcbec43b2a427367bbd882ed10c12cd00804a6d40e3493295f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFP2400958.