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 0x61cbee47d70d25d762c812edd0ba0710705c8c5fcddb6769f06ce92a9f31f441. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c74cb91a-5568-4036-8979-06c3bb505611.json and https://artists.proofprofile.net/proofs/artist/c74cb91a-5568-4036-8979-06c3bb505611.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 0xfaf3f8ffadd27ad867cb79d64eec4108d407793b00dca75e2ec374458832f96c. 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/QZXLZ2532676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be0977ecc7cadeeef58c251be73b0f94bf8ebe3aba1fcaf79a26a51d4b022d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:03Z), 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/QZXLZ2532678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb70740306180761cc6ebd4d14e0a84647a3f912ee3d49332d36aacb9dd0508. 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/QZXLZ2532679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17ffc537ebf5f6867fb2af287007eefafaa3fb5460dabb7f758e55d4c7a9a8. 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/QZXLZ2532682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931f638832ac9d370a600b7bb037a4813bb52fa0ad5886b95b55503b434b94bf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZXLZ2532683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb442a388cde3f9c6f0d7d15629066db477f71fb12bbe68f5b4fd19a393b6748c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZXLZ2532684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595201c96400aea2c6ab69b5a3c64e3a083c75d1711e40eb85eccd177dde5300. 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/QZXLZ2532685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a1e898f1ec7ef36bd970bd8053ff3438cf8b50beb60ad8019af1b7e4c90429. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:49:51Z), 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/QZXLZ2532686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498da046a7f6ca13bbfacf80307477e16a5a1700551a68c5549a1040da9a22f3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZXLZ2532687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4eb8215424d66aed5b2b4a3c2edc8f1d7ccbd7df971e36eeb5cbe84458bc5d. 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/QZXLZ2532688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15de6ba30d7275e4dc0ee3cec6818d46923802fd930c8d95c13b89723bdda47. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:53:10Z), 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/QZXLZ2532689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd57f9bda4465e49b5baae745282945e8b2e4cafba77e403427bce6d55a7cdfa. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZXLZ2532690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d8925f0b89132e537c0a35771c5d346105b82fab0a2c134b70085f7684bac. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:57Z), 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/QZXLZ2532691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554bae67e1e18fd421323caefd80f094c63482f777392d05725e61c4b9feb198. 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/QZXLZ2532695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8ae400b519b6abb7a4df8ebd14a8a4f70ca2ad2c2dcf6001207162fc2ddaf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZXLZ2532696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ddd5614b9f52fe94621f77c7329030837b1a0b64a31a699ebfafe9293f557. 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/QZXLZ2532697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5449bdc4540a1d9b4f3d178139b39c1cba3fe10e746aa0e92157511ad30bce. 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/QZXLZ2533856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa294472ff1d875906cd636f0922d50cb88eeb774139a61f0ad1ccb5976a0cb23. 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/QZXLZ2533857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98681accd3b2c98f84ab461acb1871ada165e4af795e0d31bd4cda4970770a57. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZXLZ2533860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d570e0bd51dd7ba0aba591e48a56a8bb60696e5ca1b4a2b787a08b2cb0e43c6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZXLZ2533861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcedc0e952d1eaca4541c995ef0dcd72125752102087797c8d6151d3861c916a. 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/QZXLZ2533864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90b96193c254f0e824846b3dfb3a693ca86678ca335b0c081b63a3d94cc0840. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZXLZ2533866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25782c6121645e04a886c583d0983088a89ccda8dbea35440bd9abd8801bdb99. 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/QZXLZ2537180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc22174f851d16da53a9dbfda2f676aefc6727233a55bf4a595ff49a609b7e62. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZXLZ2537181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642484a9a8d04e5724924fb7032fbded8b0db67200284708652844cfaa3bb881. 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/QZXLZ2537182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544b7fe9a858dca0323beda8a5ffba1d78970ace28a6bb968e203ca6e5595133. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZXLZ2537184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e34092efa00adae265be3523f931e05f9507be20836614e8953052ac8fc506. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZXLZ2537186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87639c78c06e177cce58837eeae39f6e8e470a296aa51ee30f5739ce2bde1c7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZXLZ2537187.