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 0x653404416e5a40272ccd9fe94d790000cd39b7b8b1e1aaa84ab4104022ab5580. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67073f41-f9b8-45cd-9dd1-ee190ed8a729.json and https://artists.proofprofile.net/proofs/artist/67073f41-f9b8-45cd-9dd1-ee190ed8a729.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 0xad9aa45d1136cd5d43908c6bad94f706094c8ffaf20c80ed9833fd7dcffcfee0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZN882220267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc398e6c72ea2856f612564ef523ad35a19b7e43bb94a98cb29ead3a0afc33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES89E2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbabcc23abdb4d8a5d2c50670a254edaa3a5961b802b03ab9dfa52d15360134. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZN882224804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab311e4cd40c3fc988f76b2ebd79effc91a9496b335bd66587c5d021effb54. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011941924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89c2fbd863584a442b884ee2a455c09508f83521df91aebae6421006625792. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES64E2504029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb88807a06de4cb6f1417e636cc5c20febe5215983b3da9f130039d0c1b543e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882545703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351eec7c19ef5f4ab8dd7d7a74ad76b560ee9385d357e6e879e3825ceba77f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDW2491403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e4fbe5e8ee1ee49cca28b29482df53bd6d91208bddbd67e44743906804f8bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTVM2419212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982b26322017e00e5ab8d7d09b3f94b32f7d4375435ec9e2e8d732f9dafa072b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTPX2432984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0609ba428d07e21483ac66e155cd2cdddbbda0c2b323e5ebf1ddf1ddfc6a3f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2461859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101904ca66525617985c6527b3d0f567e2a82963c0bcd405db474efa3fa94bd1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5AB2483956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87141e95199c3c155f1da58693ed7da4094cb9c9f7e2ca9e8a5ebf4710f13a3e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ662410713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ca8411f25467aa572af180644558e018c224f6e73ad9d005fa7f9b7b55de3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2309025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ec59458340389391599310b01c1f0fd6edbfc214df847039b6d3877b1587c4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ662340879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04bea74f32cae51930114fcd0fe37f06c3d18a4f636d17708c49320fad465cf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2397371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d19c6afce15903556d4d63551b02942e31aa30a8f3477f77d42c6b20447b403. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZYFZ2390314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a21857384802a64232a1bb602fa5491cbcb81fe80b8df4a26877ff36d98cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES89E2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecfe827ea9b08aaddbf7b0a971998d5cdec9c1dd9bc66533ae60279092dcf55. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES89E2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce82e0616ca09040eb23b22ba634dcb6a4ba9d4ab13ae55e66121334cf713fe2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZN882253643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb0523ad7039a5a50dd73ad5fcaeb127e19a4105aec1c6a297accbc78a0e6f4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES89E2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3decb1b60fe086ea7990be4b4a7aeca7968518171c84658969f1726a98aa2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2279528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233fe07ad8d2458d437b961a34bc7258b433621b15579d809812f1f32a39111b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZN882210376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201fb8d78c2a9d25fb38d099f0d26b6906871b707c705bbc9c387927e2268bbd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882179358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc804dfd691d0ec67665113c908f7e10a4c35f01c415e4e6f49ddfcb0234ed8d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZN882170398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a9b231297ae9b6ae79395f49712ac5b1f7c1608a765a8379e3112aff231fda. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZN882158946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abcaf3709e2b31721421cbc3237699356eca728531133d7f4231e59b843ac26. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2138592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926c587bf751528c9036c333aff4346ef5269d85ef6c9ffd6080bd0d2f353a3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2136198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e30fd0a94d24f4e31536c84fc23c046f66c6c76fdb9e55fe0572a01f0c52d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2124968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a4781cda6443150524bdbc2b5fce8f2ea51362bde9b3566a7f41ddfb87941. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2121330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef80e2bc2cffcbaab2a3fab177cef959e6854f4a336f6332c787d31b62eb6dda. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2114331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d976f629415c470dc3c1ec4ba154263ac5e5d2581e6498efcb228be2a9ff16. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2104141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb73e234b02fab32bc8d6a4ec1e6715b5c770a21de99ba833727e706a764498. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2060504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d238e856f3efea31fa3dda119d77bd295f3fdebd92738d302d36ad42e0e8d3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2048526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10410b2c45a045feaebf54b2214943f99d9c3f94564ba1530ab26d16f60a3ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2034027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fdd37029bc59ab19af4fa32d6ed465b9d6acb419fbe2e2464662181c015cbe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2026544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a829a94fd865fc4496a3cc74970bf2e3b9d884e4037d667924e3963b2e06d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2007405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd890856374b0e0da73c78eacbda209fe810b4881a756f15c345bf7b2f908ce99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2011742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d27e7ef0470921285655e2f9e98624b0217b73b42e115e2f350c7c39c77e0f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G1929846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee2776d6b272cb9fc8cb5b74080698ad9de48977bb6f34f7383d125d1941a8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ESA011927238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d38df48eb951859d9e95ebae2330014c610e6ad2d0cb2ff922a04340a43ccd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES31E2201360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3decb1b60fe086ea7990be4b4a7aeca7968518171c84658969f1726a98aa2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2279528.