1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x14a4168600dabff20822ec7fdf7eb94531d95caa4d16c00deee40635bcba154c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89b64b09-8d78-4e38-b5be-640270759180.json and https://artists.proofprofile.net/proofs/artist/89b64b09-8d78-4e38-b5be-640270759180.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 → block OTSBitcoinBlock must exist at that height 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 0xec16295bcdbabeee467a3bf27c5b8369c831469b8b89b0fdbd4bfbc38b450edb. 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/GX3Q92002594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcb5901a7e9f88323ad515fa332525ffe8b3eafeb52374211243da81d4da548. 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/GX3Q92054582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02b94b5c5fe87316197a9a6e9311a360b6ecf7b43e2eb29461d1fd6c31d82ff. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2206647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e10797f08e2b1ac145ee5321542491429032137a3979ad896b0873ec432b2. 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/GBLFP2206648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4453d406a7b2471afec89ba6045a610138398cab65f63557db405288a4da26. 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/GBLFP2206649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef9ea6bfe72808d8d3f8fd66344f43d57c789dc45b97197574802bd32a88f5. 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/GBLFP2206650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc812f15a3e42c90e89e0194cd4ff9d57ce8830968173476c7abed87776860d. 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/GBLFP2206651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa96e6c8265ea51bfd3340a89400a9f04fcdc07ba956a98a173fd837a1c44bb. 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/GBLFP2206652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78250a716ee8fc19d4e7ea0cd69bebd7ba6f720afef18093a460635334243d57. 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/GBLFP2206653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a329f020aa994b44438bc0754af10567fd192ff62d82f303d1160d86e9f8cc. 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/GBLFP2206655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6e7a12529a5ad721f0cea6152cbe8e24bfab9c97373414f2b205190f7e4d92. 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/GBLFP2206656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca619a8b2523859a21099c2d36886674cc39a7d4c4516ec798b354c8726eb93b. 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/GBLFP2206657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc974db6a5d8106246254ab0b5f655da27f6f3c592e7d4c1c53e301734de3dd27. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX3Q92313132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86c959f7c0010e5d9f352d0f9ebe56494b1168a4cb0d0eba236ceb3b33e849. 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/GX3Q92313124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a57746048bec6406bc9e4ff7cf21ccfd7f61c64089670b956d719dbda08f0a. 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/GX3Q92313133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40dcb392ecfab988431d50321329497be59bab3dfe3943749b494dcc84c3c5d. 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/GX3Q92313130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aeccc7ee36942d10086a8d60fbb35657e0feef9f7089e0a8bde85ebd72ccf3. 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/GX3Q92313126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18b3ad37a9e9e5b1283c179020bf502e720b0205d7ef4a989f5ec63fcb0951. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GX3Q92313131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9c4238a07373523e03c3149134b8c09c41bfa5ac480495d5f39c7e7c09d03. 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/GBLFP2309327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070cac89a652cb33bf469aad282b751be0634fcb2094cbdb4a58f192842e537. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6L2449687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bcb6cbd6786d5046ec0d42fde74b32b14781c9ed2a6a5da795465b4b75ccd7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6J2432258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74ac3dae515fced1ab5ce7d216df0cd3ff242aa86da3a992cddf0fed37dd47a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6J2432259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445bd6fc521247f3bf7dabad495173a6387ced6511c176f818662404f8381d8a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6J2432260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc3289f10e77f2b29415f4a2e418f12a874d38b77634a433d9dd2fe30ebe537. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6J2432261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aee9b1b173bc7d29bc396ac5986bd24dde38f0690f645e6764380d3981c6ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2432263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c8d6668e3d42035d058aad7c606f10c32b757557f40d969c0bbdc77282d561. 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/QZK6J2432269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d3a171539d493eb54ee055da3a29eab032392a7c5451aedbccd7094e02a4fa. 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/QZK6J2432270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53edb04fdbfee7ecbacd57e40bff6f54b2da2124e31693350d2ab455264de4c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZTBD2451275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f68baadd5d14a759f3298ca6f1ae863c5c7d006a02cb7b33cd827a69612f30. 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/QZZ7T2497156.