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 0x3785a483fd6dc546addd9d85f998c82284639a3be3a674717b535f308876dee7. 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/c2ac74f1-5efe-4ba4-8cd0-b040c7882396.json and https://artists.proofprofile.net/proofs/artist/c2ac74f1-5efe-4ba4-8cd0-b040c7882396.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 0xfa6e43b7eb11e38521beca4e9cc05ffcf2b4463dbd0a30daf6d610ce454b5198. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931892058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade4755ad6fedc99487000015e33764e44a24c7bcc3cf4e337f4d20d8fefa78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931892059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e570267cb543f5aeed34ae6640c24297564639596cbab010f263c51443d8cd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG931892060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa675e9eca6da5ab8a2dac36ccafd20f47087ff1c41d205bf0af72a335c5303. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931892061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1bbe08d92075b10e04c54302f15735d0ec0a20e05c59f043bc5fc215a0a7f4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931892062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d9bf10c40e484aae5b22fd6071e3213f975a0d0505d3923066f93fb5b4ef2. 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/DEG931892063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9816c484b562e42dae26d1897e8b902830ff40ebe6588ae0e4b3d90e8f8265. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEG931892064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a2923a50a9afac53162ecfeb70b75e44c79eb2a8bc895813331bc56b8261e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEG931892065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb9221e523408e403408f4695bf77ad479ca5f57d8fae64c50f0e400c1ea05. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEG931892066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b96eb72528968667a1a2c64c267ef0a40b45a2c38e9036f2c164a37512847. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEG931892067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1143ea47d6b5eb6c29aa56a93fd785d32d31a2f8330e1728fc842234333a32. 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/DEG931892068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ee593f50c09c5e4a864ead9e5c43ab163edc9bab66c98d4afd9a839094943. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931892069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f1ea4ffe7accdc98af6512a5817004e3f90bf7f74ab96ebd24a2c3a0f23bf6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG931892070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab347a5a9e9fe814ca6bbe871c9c6a0c6942f8dabfedafd6b15f9a02e2da982. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEG931892071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e3024def1005a5196eac2fbc6da16abdf84c1afddf8c135611fadad5539253. 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/DEG931892072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd84011e136672388eef10e861013d49a15934199e8cb9ef31da0e88443fad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEG931892073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6de84307bb901b5147180d80fd42df8a0260968827baea5c9c7e85fae57a97. 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/DEG931892074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3da5321dfebe96e09ba01c86e30522e9260732c460866c9a0aefb3dffdd42. 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/DEG931892075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f90af8fef009e610cef5986bf731457ac00de01d8e6ba866f30e3a118d0a4d3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:22:52Z), 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/DEG931892076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2196e49f96f2d6bd667bf8f2b8152dc13be3d8cc7f24511aa799b3728befcc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:32Z), 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/DEG931892077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425c1e4a3f3c59bfc992d333a1daacc957c4a7414b9a7c710e7e87649e7fbe4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEG931892078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5503383ba2b0fd345031558d8d7cbee7f4790067bbed8c4a9be844bb7823f5. 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/AUBEC2122489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8059626fe809c6ddbf64b7e116387aa98e508c095e5c7584cb0887b231fa8de. 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/AUBEC2122375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60119295f28f4377b05a70215f09fe925acdbc059a12bb4e49b8b9fe224c3f4b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUBEC2118940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02541821a1263dcbc482a6a2b22ce5957ddade5e3e49fc038b28b758500701c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USYBL2301767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0cb892f9867cd8d8d5956b90ef95b68dbca529a37d0dea524bf499f67f948e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USYBL2301768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0533e54ff52fc11be8a2e6d8adbefa982a75c10831eb12774478606d228c8. 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/DEY472377631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdcf001476e53907c4351102dc12df7938f4b619cbbf1fbbadb95279c4d6032. 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/DEY472172787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37e1a30dabcb5e8a396f6c01d14f6872ddb3b215015c86999aa3c64738ca73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEY472172788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3a05f83327c367127c1f1f05ce0c623f4385272a10631c7d0f811b2fb4456. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DECY52001757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66662db51b013660bc29abac834d3cefb066ebbd1c26709d18e7bb77f2ef35f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECY52001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5593685211c8cf7cc5add126aea0cb6b2276b9bacf9dddced7817e742afd3359. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLZJ1957619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d75616c6b5feeb06d176d3670d4789f2ab6b8c76091fcf2307456d8747c153. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ1957620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6789c69b8238fefa91b97b8a7a4158d558337727e1c7979e07dce23be9908a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLZJ1957622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828dfb888e00db596274381b342cfabb1968dc68b2aba03e98020c04596b23ec. 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/USLZJ1957623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebfee677465f590d2b500eec50a55dc2b4d8d8f17d14a87ae0542f10c3faac7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKL4N1700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f1c7b4abd720e939e336d9b62e51702feee419baf7af137446ccac1410a87f. 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/UK6821801409.
Needs x Green Vinyl present The Future Of Vinyl