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 0xbbeea911675bec1fa4541774648b3b6f1b715f911a6aafcde7209b223321acd2. 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/a0622a66-add9-43e9-ae7d-d84acbd63ab1.json and https://artists.proofprofile.net/proofs/artist/a0622a66-add9-43e9-ae7d-d84acbd63ab1.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 0x9311d2ecdac8acf2bd8fd5d7c6c65cb7296cb84f82f1001a37af7b7b06d5d736. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2600e1a790790e028d945329303ee4ff7ca0f668587bf7c47c57c3fc5c96b13b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52b43012a11f2b64a8ab570b980542f0321e534810a330e40ca8547aa16dbdd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c5e9a3c8cb94b517ab44fae51f350ecc7f4255c4d36e83cd2a5a87e804e214. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJZ2439837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f94d52659bd0359025ff9deb212f3fba0a1501b66e0547bfe91ab51dc546147. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46907bb94c44565ebe4c9ec24ad4f4f3d09ddfa810b5976a22a09a81d331f30b. 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/QZK6K2478122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b184b683227115b3649d4ec5ab772aa9283486afba78072c780de89c506727b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNJZ2439832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7edd0b78ee0002f30ca081e7032a23b8c94dd6b65bdaab6b66a7a7a2891e82. 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/QZNWT2480687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd116c4135f09e21f8b6b672a1de405b1f7494bf9a4893839fc3111c6455dff64. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWT2480692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea43ad75e9a075c7d9d4adaf884ec10775660da7d067e400f87de5ce649fe842. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780228cead58fb1c8ef15e4806ab5104ae941d8b9f2420dfe30e9168dd32844. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20369e70d42200a1f945d551cb4a686ac4c793127da6642a2cd57672293378. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98509d3d8f93dfe68b99d853ae9d338dccc5f6b34e043f9e3c9017095d6c737c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3989bcf26124109059b699d06b9ebeb2351d556446b2f7b91fdf80bf602ec1e2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55af1eaa15c68bdf402863954367b8cb5e15311cd5536a483f43b638a8f5621. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6K2477303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6323ed1d9c8d36e1cc9733455ca209ac7bf7869c910e397d82914fd8e39be548. 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/QZMEN2473988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b5f25afd81680dfa155120fc51ce2f4266fccc4330882508fa1dcc3616e86. 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/QZMEN2473980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c65d344e9a0bcdb4a2e8b8692f662745aa3f623ae1710f31fbe36b168fad16. 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/QZNWT2480695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011874bf46222497b5e4b08c58356e697cfb887a7eb19474a6e79142a1a2cca7. 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/QZMEN2473984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7c3fd90e07b62adc285dc922ec21223feb94a034d1662f6085bad9651f01a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:00:28Z), 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/QZNWT2480689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd82741c95ed6e22ead7fe6f415294e00e91ce5c4880ba78e32d2d49faa0f83. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8f32c825a52f849fd1120b920da41aa8ee0de4fedf18f03fa143820ff7e82c. 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/QZMEN2473989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f45f298142e79297d5bafcf2400037fd757dc7f7c1e358d3f43ac98706372d7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6H2450474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e90cf7e98fe60d4ec8fa69ae86c2b27cad80f9e8b216ae711a3f893460c4a16. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336eab2e6942591821389fb5ceb0fa5edf4986bd1ff4849e052d43fc2719c2c2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2480690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7640bd7eae25814313fff4c8bf48581e1edcd7c79628917ba7306d6067a60700. 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/QZMER2435510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc635a66d5bafce4cfccb69611e3cf8a5d881d1b7b31929a9efd2813b9decaf5d. 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/QZMEN2473982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa097ac57bd4a8c37dc408868d83c66a5bc973812ce01aea70173e4a213aa6e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEN2473983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e0191cd76a02f45a799bf073076a98d487d89e03acb61ff0562f0c5cfa449. 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/QZNWT2480693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b844ab4bec7f21de8366387bc3bba6834cc42bed51df350ca18451b1678e53. 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/QZW9M2465945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811392e9a7a398ebc6fbedfaa552dd870a896e2fc10361e28bdb836b7934a7bf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:04:59Z), 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/US7VG2568767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4a794a60254efe80b5fcfbbb5ab3b46bc8f21be8649b6c3d56f2776442819. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJW2553845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa786b60febe4c8c2ebc08599daa16f730a3058a27e7415246b16f5b5b30b69f. 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/QZNJW2553589.