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 0x6813980a34f9096c21d765aaa57915054fec3730cba4fe212649ddd4eef47f24. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dbeea91-1799-46b0-b626-763dce1797cc.json and https://artists.proofprofile.net/proofs/artist/7dbeea91-1799-46b0-b626-763dce1797cc.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 0x5cb0d86d8f3687c6ff8738a15bcc7195735cab848edc18b1a3bae8b3424df7a4. 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/SE62X2606301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346ae10829c97be0154c1b915553ec8e1e1ed78e3df90f7ae770c64db1e191f4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE62X2701701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2562778c5a7a179bc821abf4c12146d021aefec86d572764111adb95240ac66. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:17:27Z), 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/SE62X2513001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f94e97b73aefbef140f10d408f30eabb507045e95027a186df48da725b46ca. 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/SE62X2525401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99bd1d4fdab9d0e86e741f73dea38a0387c95af22130492b4b50c8c47229b68. 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/SE62X2525402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c381a20a59466bfdfe1b3c4d46e2cf997e6d5b8cea4271104ca1bd0341d9be1. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE62X2525404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf4c8db86c7f95a2837df2b4bf825de6181aaccde7543a6a185915875603787. 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/SE62X2525406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc63eec1444406b67c659a0828fea7bab10b849415bd2faaf78ad2a89a6d20. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE62X2525407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e9d6d91276cbcbbe03ee6e9cc3b84b283832f5b1fc18305114a932e0b16f60. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE62X2525408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99abcc037cdbafc5581ad84de94b7ff6b267b07beeed88a5703884c21b3609c0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:49Z), 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/SE62X2527401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6040a348f563bdb31682a787e0cd7427d1e6f8ad8508168bce282cae182690. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SE62X2527402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04954f9d4696d16632f5fc1f17c11ba1445db20ef5b9f92aaee9024b79d69e16. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE62X2527404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfce27070d54a01a09dd849f754ee720d1e1e98afb1590195f922b2c9175cf4. 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/SE62X2527405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec81a298f2869d18005a043649ec1dc93b60353e30f054724360a872f22f01. 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/SE62X2527407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ce2750fe8260ae83bae8d48f064c7094cb8eb84a6dcadd1c93c515c9a3795. 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/SE62X2527409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732e616f8dd64f5a60e5e8595888f366c0cede73d660e77e87072ef4c0d5a650. 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/SE62X2532201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31d85d15ae1a81bf7dac7808152e4691974f68bea8fe55227135f446aee7431. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SE62X2532202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a106dcd542e58808a64d84db0425a5802344023d3f51747dcd5f19c8be3112. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:48:52Z), 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/SE62X2532203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5327455a602e4b4063956241e957a175ee233dfc51ae5b78e2cd675144c718. 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/SE62X2532206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a955e9e4444af0e03e7905aefa7b81926438c89d1da2c4c95a6d3fb5a1275. 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/SE62X2532210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924c6d74c90e3f2de2417c8047f5043048fbd099a765efecadd103d6b142c711. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE62X2535401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d375ffbba5686d6eb915bfc77af0cdbc78e5e9be1cf03c5bdb981a4eb92ac. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE62X2535403.