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 0x95c3c704284eb06987d3595b0c53706d54446ab1ed27e62ff2926bdb0ba61d96. 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/86c603e0-9b42-4080-ba7c-682df551ec5c.json and https://artists.proofprofile.net/proofs/artist/86c603e0-9b42-4080-ba7c-682df551ec5c.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 0x07ab0ecae3b87b69aa30dd5a113424ad9d46ceba607fce4de079d757a0260f62. 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/USV351395541.
Everybody's Gonna Have a Wonderful Time up There
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f51a702ec3339cc1d6f207d08f3be3201560ac8fe60a860823a2d90ad2df9f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USV351395542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0a48af2b42fa987e4a318a80c3b03716c30e75303074278fe11d67d0d0040. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USV351395543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ec128e7623a2f429d30ae6974b5ff1cfd35b14485d7455f0a7e4d3d4d2e05. 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/USV351395545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ad8868ae36d1c09a5327d166b61dd8b8e05319a7296780fb101b93129d525. 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/USV351395547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7578337c8b3b5b2ae15095300397574f0bca8d1868888deb7349848047f1e110. 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/USV351395549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170878aeec2f85e9a358fc473dcb8d28d080280542300a5cbd66763e0d316ca1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USRO29533305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623269fb4f90b0c7c16fc16a02cc3a2c4ba5b421a277bbb0ac578315dcbffdb2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USRO29533311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a63b8a1b4d1c3b811ace23c294d4ba024149b5eec7bd58ce3f91981066d44c. 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/USRO29639301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ed93bdbcfbccb57d85cce1d376b877af74829aaf65426fc65f5ce47fec37b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USRO29639303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c3f3737e51bbc01a78cd2b87bcc52981739c2c12eb18a5c7bf6fdd37c00518. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USRO29639307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dc4c80cd26a92d6079424930f422cb4e838b104376991dc24e0f71ffdacfcb. 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/USRO29639308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f5b5115a1a209810d21041b5b957c77c415e12aeb328b52d88d8a8190224dc. 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/USRO29841303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8b29495771992b55a83209e1bf21a94cb4699ea4b8887495380071b3a91e3f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USRO29841306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91b2afa59c1ef50a17945acac71f4cf7fec7ef2dfbc1803b69c7699405abbb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USRO29841311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df963f01776386f6d5b2dcba476b736ed471cdadc14843c7ff141193c51645a. 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/USRO29946302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fd081584c094179c6d31e0b9d46937e771bd69a2c8079412475aa8b33764d. 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/USRO20148706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d40eac2a071a103f3dd32a02954a6b3b60e68e4e6cb5b98b6bdf805d29784e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRO20148711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7867daefec2c1f09fe724bd2c9ea64dfb019c0fb5d14428d3ae243fd822ac424. 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/US37G0400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac2fc59d05c4ccca679accf79ea5feb7f023912633c9aa6a12b62d9141f4e8d. 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/US37G0400966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3a7702d4c88b3e9936753b2033ffbba3ae13dcf34f9ce77305abf7fa8e8b12. 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/US37G0400864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbe9c49b7166488b0f19261cfa7b8619ce45d28cdde48a2c7ac8d26c2ca5884. 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/US37G0400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96af8c14ca823c431b89d3a26c00766f85132a5db4001411b5ad4cf97f4d84a8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/US37G0400872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917c7134d3cad6f1c29e03ee8a375ed82d11a81b02df278b661f8c7adec40454. 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/US37G0401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd793c4f02c15540bdea11663ca47b9d81b766fbd51e0792078dd86c8699440b. 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/USRO20760202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170878aeec2f85e9a358fc473dcb8d28d080280542300a5cbd66763e0d316ca1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USRO29533305.
Gloryland - 30 Bluegrass Gospel Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917c7134d3cad6f1c29e03ee8a375ed82d11a81b02df278b661f8c7adec40454. 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/US37G0401084.