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 0xaf10ce2e1a4601ec7873852b3a8498d0fce8610004b6916b1ca8ea7133ec8564. 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/a0b1ebd7-b7af-4296-9b08-800707db0248.json and https://artists.proofprofile.net/proofs/artist/a0b1ebd7-b7af-4296-9b08-800707db0248.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 0xdd7411a2883ca8cc1e610f62d1cb62e603eaa6a3f9dd944c97b983c4ae1ce253. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291913120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ca44a4b335c2d13e78bf56a26fc98dd3536b0ede724bca56cf27a80b902f33. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291913825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65117d46d5019e728925425a5ff8364a9914d9c1c3df4ef52db2a28019c4dc. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ291913826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256614c8118b6f5e4669b4fcaa32ac39cd65c672e99701a001150128a62b4185. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ291917812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590588ef80ead53beaa062bc5a9b7864c4e0cba41318bf2e218fbf66701858af. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291932583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f54a1b81ae226ddc704001c5facdf7e7a650fbfb6691ad2bcf0a68f5e3423d2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ291932584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9d8d6bb30eb7cd520baa251f7681ad0b9c4c15ff71835c74957fd797ee9089. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291932586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb300b5cdb1322736d3098d561d73fe1a9a24b51e49fe87c2600b7a154aed7237. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291936052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76aec14830474a3fb44f601b698ca6652ced98350479ca81309a1e7b12d83c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291936053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c060a2d9ec1f7e08091f6f5763035ca288f7819ef7a02fe4aeaa641984d17f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ291936054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d60cf5d167873262534b05bb8ccb6fd7ffc342622d830085d8c7ee30dbb7e5. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ291936055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf532129b403ddbd5cfce4fd2beeff38ba35d781e579b7784ba888455caa2009. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ292069130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec17b50f84884787fd5191e44c84ef5dcd207e1ee300bfacde7371c409f1438. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292069132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7980990c317f5c378501bc79340849a0e123345a5ed546384d42b0d1dbedffe. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ292076715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfb17654abda2950d5ee0ed063e9b3e13ae98b15a25b47f87e91e9201c89173. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292076719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be977e8187f15771644aed6dac966e98c4c34c96ee6169aa4b07cbcdcb3e76e. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ292079448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43118941c853b1aba363a13f8d4cb1a284629914e8c4166d446463891cd19526. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292084709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eba2c8963efd0b4f62feb48834dd7f1357b29ad843ed169d7601ca03ac8244c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292100790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1467c9e0501c05721eed437032b909333364f0bbca482794c4d5bd776549886b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292100791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0b2e63b71a915c9791be4382247035365fb5586e99cf1b25ca5b2ff66b318. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292100792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf422e27bcee1b9a6c732f8ca4d36bd91afc745e382b03ea2a21d22dfc5628fa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRZ292100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3b740db6d69c51c72009982cdfb36474568fddb3be05b00e168a0438414001. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRZ292103299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc572c0f515aaca690a39a4debbb32095d51f4b7b484d9c0d1e0007ac3b9d39f6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KSA012246901.