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 0x0a0cf232a6afa913abadc1cd6d2b314fc793be1d198c4694d9fe8c15d1759242. 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/72dcb74e-ac38-4fd9-9734-d38b093cf849.json and https://artists.proofprofile.net/proofs/artist/72dcb74e-ac38-4fd9-9734-d38b093cf849.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 0x617dac9626a222816a51e89ea3d67dd7bcb1b6e9e5e2103a263f00f7a7a067e4. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:06Z), 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/BRX6A1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96824b2d697524680de5b1f8021224bc29b69ab30251ca81659514353492ed9a. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:48Z), 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/BRX6A1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b1735a9d619c2f2037d8e1ff72a28f059b84935478adb375a9446f7f29b244. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRX6A1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64814617c1bcbf39dca165061400883fb5933da4358be321e22235ae6f627af. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRX6A1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359e9471dbe89910c459a4a3883ad9b390ba3116ae79a0466bf3f11146158fd1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRX6A1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bb27889579b049e26bb22f9a0ea2b27b6971ee63cf7360cadb60b74240a6ca. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRX6A1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7149e763384a3eae8810e74406834de8685c44ceb2c3b6527fcb93f258a1fe4c. 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/BRX6A1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b77e61a2f6a2d92192e244d096796b25f08351d97ec1502e84496af52fc72c9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:56Z), 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/BRX6A1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79aea0cbf9f2317719eba81129439162da3b3afc518c718d6863328249060e3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRX6A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8ceda4fc656f555ed48d330052b25cc320851e1a21810d3544e9a29d2f6fc0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRX6A2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efd550adbba5bde93c83f1a104619939940b6751ab36ca001d398a787ee7dfe. 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/BRX6A2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347860be10004bc730188ffbd0bb227501dcd99cf043cb9c154db5235f9182c3. 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/BRX6A2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad97399613088a25f90da536a91ff02fa440462f2a7b83d1f69bff760e3513. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRX6A2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564808cbc1e4ab4efe1c986f39c9833b501fc9b01d95a54865d8b08d28356571. 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/QZNJX2507838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb37bad71f0930721a361e2dd68ccf4a3d5281bf90f56e5ebaf79ce541e0071. 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/QZMZ92485683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9741d3dba0c75764d38671ae86395f97103adfd203d5e1f7c984da076fea4ee6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMZ92485685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dedc1bb8e577cef3a7b124281af3a80cff2b21ecfd031ebde73e2d9d4671fa2. 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/BCUXR2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ec08a1717d1b37937142fb1588ea6dc191181ef62783dfb06bfcd761d3c7d1. 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/BRGOA2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10455cf5f656d8e0f806a7c69b932e466328242f3fbbb5f9864128f090e58a79. 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/BRGOA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe862198333b0d7fbf10b1f249417e74da02abef364babd93d1cd818d5de5294a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRGOA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3ac7b6d716337cd9cb7676929d820b8a46435a6fea1275619e42781b0c544. 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/BRGOA2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60a2e43dcbdc620aeb77012a49bd742d4bd76efa3b66cd7003ed5dcd4d401f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42095c3eb6d9fd8902b828101f76d67728831f3bb2a3b1a3356290480269e1d1. 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/BRGOA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca3080b227fd8db75127b5195235c25545c3dc88ff927207cf35ae8e0b3f5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9506d4a9434c28012b43ed11fbbf4b3b4aa6cde2a0e37a56465f719f55e7b58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRGOA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc49216adf3eb8b2fe26412c60c375b1dbd9f50e4973d72759f22703921e9398. 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/BRGOA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06df01f3723bc4458a9a8f89c5ebca6e2841fc37e067c17bd8c253fd824337e8. 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/BRGOA2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fbc26ec8bea2f42942cd1c8da8b35aafc4a9d8dc5ab241fd5b309825318ba7. 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/BRGOA2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9eac64ac3d87b27ae636750ddfa817530239998efb0951ad6e71ddb58620c1. 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/BRGOA2300010.
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 0xe5d412738768b802284eabe2e825d155313881edb7e6b60e08eb4b41b369da9d. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/BRGOA2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d47f2ae15929b45e26119d0ae22dc8c11f1654dd350a04ecba5d894fce3750e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/BRGOA2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb035512e98a7ef64dbf178fe98c368fa4ca16560bba004d0069a1ccc7ecdccd8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BRGOA2000008.