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 0x9f4e3e0312742f65bd2ebe5fafb35daba581d541ec32eca58912b708f0f821fe. 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/3007d62e-07c5-401b-939c-267c05dc77d1.json and https://artists.proofprofile.net/proofs/artist/3007d62e-07c5-401b-939c-267c05dc77d1.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 0xbf514f154d390106923cd8cbb541d492c9f366567283d0fc10cb852b56ba75e2. 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/RUA1D2165098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4b4ec00203e9e121f689eda7b710d3f98175b7bcec74f0b72218885491e63c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2165099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7898e4924b666b9e33f9c7a540346f0a1c2cd3aecec4c9ecc55fa3289bd422d. 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/RUA1D2165104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89eed4e52e5b6caeec95789cd1cdfaeb2f74f00db7521f05f9e065d3bcdf76e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RUA1D2165105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376781a5f1c100163add2cb1d1d491e40cbe783f7a0d033cd99dfa59e97443cc. 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/RUA1D2165106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8542269c53c67c663d8e6aeb8ef4c432e1dfee86cd9aad6e7cef6e114f5886. 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/RUA1D2165107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab146c5efa753f3159dd60db4e73ad6fe9a90c553bfea6a383d5d498e60b86e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2165109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1fe27e7cc8bfd2af9527a8e9b7f828c69ea40e3901251a674b90f91014407d. 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/RUA1D2165111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3380285941c51a604abc7b9fe7a57e1e45c5a289db6f309a84c0e9a131fce89d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/RUA1D2165112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efe8d13a148efa3e762dc209d79faf260c82dab9b7fa3d76f7bdf953d4b85b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2165113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa7fbbcad4f875e21cb61c24176d2ea29a69c2f605c61ee7fb17df96ed121d4. 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/RUA1D2165114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15d522b752cc1d7c39066d70f200b8c5d67040f45f7aa6dde3640f334ec73f. 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/RUA1D2165115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd0740abfe1886750212efdeb11b21e8f15f3d220817acf818f3b2a68bef32d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2165116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2ab4342e18955ebca536ffd64d544314c38f5f4937ace310b303dfce1b2dac. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1D2165117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca397fb9bc940f79e822661ffc2a248314db7f5350018de87113cb3f6387dcc8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUACR2200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c93ef2df3c8760af1fac96a047af1e402c65fbe7edf07a651dc639795133e6. 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/RUACR2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3b6e92a08f5883ae39024d185beda6e88772283f02d68f74c8d41c29f55b44. 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/RUACR2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4cbd212cc543d72f37063a6d68572921b3b28210a46476d65b25b09811b88. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/RUACR2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8bd2bbbca4d796db3ac2a5090d07049ff7605279bb15b25530d34a03c2691b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUACR2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2907d670d1c884eaba0b00499ff08d76207ef726e1242de604f2be46a5478d9. 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/RUACR2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549612ab25e172423ef26ab9bbbf1db6f147b033c01cd207b6f954270f222308. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:34Z), 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/RUACR2200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1b065b1f5ff4bcf713d241b00812359721d2c4bd95c64bf7988dc586abdb16. 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/RUACR2300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45073e395b78903161bb6fa79540d78cecb29071b970d56568d8b352c4f42b40. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUACR2300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fad679c2a4ff0e810c5e3ef726ef002d22376250409a9463291cb50905589e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:00Z), 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/RUACR2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3abba3625ae5c68188d2cf938740380c5103ea2b70570cf99f3e62e3695cec7. 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/RUACR2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9bdd291997a413423e4685443b3110a01dc5c5388c230c159aa5a3370e94b. 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/RUACR2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa11f08881c1b45423f909e15c1fe79d85d83287d3e2f8c247df6039dffecaf. 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/RUACR2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b324b8988db777ed1832f541225801451fdee117770ef583aa6e8df65284d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/RUAGT2454408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a22e81ceffc9dc1822075f8ad4d2287b9f01995842319dc4f3e38eaecffb2f. 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/RUAGT2454410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7fd8b83cf6837028ea86a87f72d363137b5ce536e3b2b9ae30dab16e86438e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/RUA742508901.