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 0x04dcf92de5ce0a6201d2429a36274b33a1986fb71eba1edec1cee363fe2c6bcf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7f8ca2e-098b-449a-9539-afe8d9450320.json and https://artists.proofprofile.net/proofs/artist/c7f8ca2e-098b-449a-9539-afe8d9450320.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 0x453a2c8bbc3073bb24ba99d6eae34db2fdfccc850673b329807ded4e033d7ed8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USCJ81601405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540570ea13f21f2978c0e33ee1f0d0054b0e5bc26180e429355558423638f502. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:36Z), 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/USCJ81601406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2e458c3c32eaba1dbb76238493a5f3399d069f884be9dfe6e3e86ffe02e2f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCJ81601407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e73522b7437e6f8f7fa08c67c92a3fb5eba9bfa9325f5808eb9b09c69ef041. 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/QM2F81500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a2c8bbc3073bb24ba99d6eae34db2fdfccc850673b329807ded4e033d7ed8. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCJ81601405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e73522b7437e6f8f7fa08c67c92a3fb5eba9bfa9325f5808eb9b09c69ef041. 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/QM2F81500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f8b1ce649e9a7e8dae576c7c5f924fc2a674c37e31dbe22cc311eefc4b8e6. 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/QZNWQ2245559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6096278fdfaadab824f64a2fa2f31cfec38d603b6068273d8fca2f3d2c43e216. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB62232289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d2c7c207ab5a7c682bd64a21df998dd1401c07fc7c2ec1e0b62414df0391f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZES72480028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5bfa81df91f7d56874ca93a01f5dc65d0ad8c4914553796998904412ff004f. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZTAS2486945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfb1b0f5bc578aef7c328a689b056008e9b8d61cb1d41332f8128ee9ee148b8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB52469041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f8b1ce649e9a7e8dae576c7c5f924fc2a674c37e31dbe22cc311eefc4b8e6. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZNWQ2245559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a1b5fbd46502f58b60b335664cd62f1fa5696dfa4f129d112d058f41002a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZTBA2414211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f11f58575861b3eaf56b9dcbc21ffc7e03317f9543dc6509fa404b5010c2874. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CADE70902650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9ecdd09e1f60f808daa1584f4f06c037a639bc740839249321288db51acac3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL1366824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08e5799a65bf065f89d6b65f78390aac88179505d5b98db96b3682b68af870. 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/AUDCB1300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9ccac83eed8f3149f9634d86d7c3a2008fc11af5c7c69a1944f1c577bd1124. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUDCB1300412.
Alone With You (Purple Disco Machine Remix - Mixed)
Future Disco Presents: Poolside Sounds, Vol. 7 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84335ec33af232e987d27092c37cf50c41ac067c370e83644bbbb30abbf8791. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1832657.
Alone With You (Purple Disco Machine Remix) - Mixed
Disco Funkin', Vol. 4 (Curated by Birdee) [DJ Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e1153d04dcf05ba042bf8f90e335e789376002a24901372f9e61b062d7219. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBRGV2162008.
Alone with You - Purple Disco Machine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecee8cc3d6137e0a1d623f6bfea8bc1b6b2e4192c16a9dab74e90aa53f0f56a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBFBC1601503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a0ed5f2962bcb56f5849af58c96bdaba58a3534491c42e4b43eeb67e45ca4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882301793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3aae651d6f58d9d91c080a7d2ce7aefb042da18fceaa96f506feaba4fbf0c8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/AUDCB1300413.
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 0x05642b2e60adafdd18b544489d3e1ae5633d502e0d689db837325b948d7fb68f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/AUDCB1300414.