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 0xa9be41602fc624fad9232dc84965f158076446e77350be67f5b80120b33e1a6c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd725ec1-27be-47be-908a-a47d7ead77c0.json and https://artists.proofprofile.net/proofs/artist/bd725ec1-27be-47be-908a-a47d7ead77c0.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 0x18c02fb3b4f743c19852a0fffc44532c4e0840991df766ea3098798fb9006f02. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6K2369560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654494b15781b5e5048582e87fe593c2d4e0ee5f75a2c1d84cdf5b975e67ba56. 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/QZWFM2351952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6c01c880ac263a4199a6aa92e86c1a32a1c8d0b4270cb68a14758251c77d39. 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/QZWFM2351953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683db2407ff60a88bbf2ef103bc3ab498016101a4d06fc0b4bc367e105e9d32. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZZ7L2419183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d83b03032b8c254f047b2bda8743f1b7723b8e4793a483d8b5e9da86b1f1c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZZ7M2494113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95075e91bffd602b3b1179d9bafeb9ac88770b14c86abf85fb51862891c7897a. 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/QZZ7M2494116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d2f30b2ad2aafd5af6e19fbc189031f22c98ffe2a6784644c0377ddec5033. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZZ7M2494117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60c2c4c5650d1ffc6ccd53665defc4004a4e3125a4257b88c9a4e3976a8bf80. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:42Z), 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/QZZ7M2494118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095be6a31aab21f747df62f0e30eecccaeb5c50c5082248517b4aaa23b135c2a. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QZZ7M2494119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418f9b62bfc8a34b4b24c192b3706f88e008096d3142ee4cd9cebf131d74cdd2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7M2494120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f603a5098d72831b5a8ae641b8fea8456b0739b47efa85c7ea06e1f63142d8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:19Z), 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/QZZ7M2494121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e1b294c8873432ef336b74c71d408ec327caf65f38c17e0cd87161ca282cab. 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/QZZ7M2494123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb06962db2ebd8b8cf0d68861a5776bcc61c48d84fbe91a3ea40225e25a270c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:41Z), 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/QZPLR2534668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f650a482a3b0565e53110260eb88fe718f7903b54082459017642dff5a5bef. 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/QZTAY2587582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856877f742765313ef8c8171b4dab045258af985aecc02515e845af277b840be. 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/QZTB32545475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb1c03e244cb17855b93dd37fd5131a2e371af6903c6bf034e903fdf74389b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:43Z), 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/QZTB32545476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000dcc9cc0823960b4bcfcc811e46116b749eb072b618a189aa35efe07ebe8cf. 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/QZTB32545477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d94d33356a0ca5dd1b0ccf8e3cde5033726507164e5e6c6c622b0f6f16bb89. 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/QZTB32545478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf9c5be843bdbab9aa61bf5c8f21d14620596daf5a70f642622d0c9a8d372c7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:13Z), 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/QZTB32545479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950e48a0e54a4c2616203fc6146c7e26d94f592e24b95e7aff205ae7819950a6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:40Z), 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/QZTB32545480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8a34d6e9dc2799a6bcffadf8e548dd34326310d07735180d98d5db0b57cf8e. 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/QZTB32545481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1294bf8575198b6771b75bb44f08787f67716c9c7fb432a2b421c53cb98199d1. 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/QZTB32545482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4452497d7af47efacf25520b66b57a4b0c6867a2fb0fd83087592549cb187c61. 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/QZTBA2565123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1b8422a2d978e868ce77a22cabce8091515b280c812c721defda5c637b763. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:40Z), 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/QZTBA2565124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f58ac36bd8878ad3c05166c3247bd1391e4de1195f6d6a7a9c2940fd54d77c2. 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/QZWFL2589629.