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 0xb56955c9a220a396c84907076eb83ecc6fc76b4fe7b57b42da4699289413387c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e11e833b-ad30-4219-84d0-caa7f5241907.json and https://artists.proofprofile.net/proofs/artist/e11e833b-ad30-4219-84d0-caa7f5241907.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 0x3504866a3204fa0e6aa7b8275bee652614c142eaba91d635ef75ddcb1c893659. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZNMX2455339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8976b16f4a4935075a3ffa4f5c3db6bf4b9d3d964c07c39af595e44742e2eea4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZNMX2486646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1605c2e7c529e7fba501dc95db002edfec754f4d0e8f8571e478624d2d2b8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNMZ2419719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff15a042177f46daf9625d416a9995433c122bfdfebff82654018ee295837c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZNMZ2419720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8ee41f24bd8fdb2fb62fca8190bd43f5567dd6ea851a8dab60e04b6191026. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNMZ2419721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44075e8e6a78c44262e891c4259a66f41b9a2cc601e239009f7857ae7d7cd814. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNMZ2419722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade9bbf6e12abced4a90f5acfbd171f4503211f123b21bbada3d5181063f6202. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:26Z), 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/QZNMZ2419723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37031230808708d5bd6cde9ad89f327581ebc7f9fdd83ee56e657a22a1a03b97. 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/QZNMZ2419725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72b41e0227ac4cac3c51e60286d4fe2083bb1b3338c01deb3228af4971bc6b. 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/QZNMZ2419726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d6e64eab1d849fa32177b6a0462e23614b9d8d16d6f4ead1f10173f9a566a2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZJG52527370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e583977d53e55c104e41945b5a239acccb5da1871a68a76f81f8f588f2274. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZL382548098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c38abf76c1c22ceb56391b2b5a911fa0110e02cbdf54d6ba684c050e91db9e0. 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/QZL382548099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d1c29e3fcb96418d3c68bd53278afdca5242a4cb8a2ae3eb65f9ff08d5499a. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZL382548103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589508352fe44f2567eb5e12160656ace1fdc15902940adb001c26fde159a580. 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/QZL382548104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b814fb19f9c64f2ad36d7a011ac3a53d48383c42330a18828cda1a9ae49667. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZL382548105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672d661acbcfeb1c9f70be32c0871c90d796041e10da54b389793285156efb9b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:52Z), 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/QZLL92589089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629891af17de057e6f7c0a6110e8cadb7f6e570a937e8309c9d761bb0c3919e1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:06:13Z), 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/QZMEV2578910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599c226fd48d26a89b8ae680424bd05959b88c08093371632a2ac26faf550a0. 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/QZMEV2578911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3853f2bdaa4f1d41433020bed76c85faf6ea71a7f6ceedbd20e4aef6ff1c5bd3. 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/QZMEV2578912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181c595c4418dafdb7e57a16c46f7503955f01d12f19b858f0e9c3e300d63705. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEV2578919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376416bd1648e9213401a3b0d06e85efc3821e0100d6b05e3791a374780e5a7b. 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/QZMEV2578925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd132050726d8489346eed15b5c962195dce6c639678e48d716524b54a5c1d. 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/QZMWW2577669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be5a7496dde70968af59354334a423a6714a71b187027ee5cd37894283af1df. 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/QZNB82545513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e0ad79954b3f5821777d071f1e42356e8354a8e1d1aaff759ad28cdbbb2487. 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/QZNB82545515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84ff35045d388473623b18ac7481e41d53dd797ffa2bb45acfaf8ae882a756. 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/QZNMU2542498.