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 0x102ae2e51db32b65eb705123d204ce2590d570797b3665e235bd461d7e06c1a5. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cc86f61-b0e2-4495-9bad-3a25c40ab4c4.json and https://artists.proofprofile.net/proofs/artist/7cc86f61-b0e2-4495-9bad-3a25c40ab4c4.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 0xbfd3b48ddc88decf2f43b3a74120584f026cd2f4699beec9a9bf1a38f94cda1e. 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/QZHNA2598353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80017f50667eec7407d7d70e23e95534c9bf3cc620f940aeff3d695b4655978b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:34Z), 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/QZHNA2598354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f6bfed87f73664cc93367fd86ea99a38ae60f703ea67cbc2c06b4251623f8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:57:16Z), 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/QZHNA2598355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35bcc8c0c690a92a2d887b9dc2dff8ac103b01552c36d924008c5303123162d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHNA2598356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bc20d1fa463fea309b2f6db6f81a69fb72381c1d9ab0abfa1857384db97f53. 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/QZHNA2598358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c18c5703aaaf842d4fc40ebb6e5ca6d1f0832fe4de74a4c4ca0dde9a0c68e0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNA2598359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e3352060de704bf8cee068342bb9983cd298dbce835cbae7e07329e1d874e6. 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/QZHNA2598360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5410d2169862783fa625eb56d9786b4635d987edd4097cdc89a3f499fc2fc01c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNA2598361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46d19f9124e9932d9c1c1ddec44d27893f21249bae7972c6cda2577c8e1e36b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:31:56Z), 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/QZHNA2562063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd88b193ef8b3b2b187029ce2e0549d449fa38cb4a0208284c6e48f65c755a52. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:44Z), 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/GX8LE2511423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea5fc127095e8620c2e553018321d48ef83df3f885c22c6deffe2fd80f6539a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:27Z), 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/GX8LE2536155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e568047ba24c687453c752452be679ed8f878880fa4c3432f5bb2435eea2d15. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWR2581029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac911c953d39b3a197cd72eb3fa7d89625078b67add1031a6e876d92347977b0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNWR2578789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60a0d0abcc52ca8da899fa09236359463148d5c536935b6dbbfffaedceef4f9. 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/QZNWR2578665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6def0ee308425e6b0c88337d6a70987c58bdd9b911fe6a8410850778e2109f. 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/QZNWR2581033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9823d456cfe12dcdfc76d3381343452b634b01cec70d6b115a845f08816f2. 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/QZNWS2534403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b340be9c4b4c2787b8a98bc28a1159773d962a8a53e11f4c750e5eda7e923. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZNWS2534405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09014209f1f655904cca2674110e5999f4e57a5e6f8333dee3ccabf9e4826301. 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/QZNWT2541983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b5e45a5fe0e6a631fa7d45681658b8fee216b933ff74eb47f7aa1e256294ae. 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/QZNWV2576425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378c98684267391bd34c05936a44d03c6f3ab0a804c3b6281a5b5eabf5e8587c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZNWV2577816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b6f297457ec4a5b2d018cecf95184ab95d98469e4247f1fe7e97b6d2569b01. 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/QZTAU2502135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb437b0e7d0b419ec0bbd96544015be5b7dc7a093bca4064667a9d09d7efabb3d. 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/QZTAU2502126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634cf07afdeb20bf3f23833364a612272d6ef784c32d2316963b6df09dc81937. 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/QZTBE2506438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cd605b0d07354995cfbd3ab82d833d5b2dac25d38b462b6e7b5d2b2528cc9c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTBE2506434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d885f7d9a3c7187356ea2e208891e04ed3ae5e3228cc26825f78b92d917f413. 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/QZWFJ2551754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6303289b948d0c4e4539ef27a8a7b048354f6181cc758459fe3683539115d983. 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/QZWFJ2549262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b814e5c5d2dea16c45499419035c1133a4d4dd71c9439936898065a31f7b20. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFJ2551747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f6b5e915ca93a41ecf88c933494395487c60bde07cfa1ec7cb826ee5448b92. 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/QZWFJ2551766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c1012dac2febd101b012fd678a2d810e4ff77ec6ef660b8beaf171c7588bf7. 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/QZWFJ2551752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc023343c5ab02be6dfa3bb821d5f7b4caf1468d254570d3aeecf71951275392e. 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/QZWFJ2551932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941dd8f5bc3183c12fa595cad27906870ae4c7e90547074ea5d65a80d71c63ba. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFM2534128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1ffa7471b286cfe8b45fb706566965fd0430bbd589a8e366f50636015f911e. 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/QZWFM2534130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cdb6166ce991ac8e3765a4929cf05599a14e002dcbeb971ab645c521a9185f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFM2534136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188bb9d85f3f81bbf1d08af794d7cc5c49e00c280e029ce6a901ccd874812c4. 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/QZWFM2534134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab409033b166dacbe3561bc7330edc293dda0f937b4ab88b894ded06490eca7d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZWFM2534132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381ddbc3a53483b8af14e60a84ba36ce86d37757babcd1b61f4c013c021c7e2e. 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/QZWFM2536564.