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 0x7cb1827e5c648745eb2ee8efcffa81719a8336ec11c4b05715c197c9a08b93b4. 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/16fb4736-23e2-47dc-afd2-ed64f38c9254.json and https://artists.proofprofile.net/proofs/artist/16fb4736-23e2-47dc-afd2-ed64f38c9254.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 0x73a240e9e398b0d951ad9e7a16633b432794c6cda522c35163007b51479ad80a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22259778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b44c2bc0df15a0ee41f41031dfc182ca39f514e28432094dceaa6dcd012dd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLFP2301034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6c4adadff0243e9377251426fa895fdfe447a40d2ff3fc4b969cf471e17fd. 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/GBLFP2301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80d623487b187c79a5a99bcdb3c0f1d3f946c4ef7c6a6d78f002170235692fa. 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/GBLFP2301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39599edbc318cd21503a308af2a5f02852de9fcc4611eabe03c8ed92ae828477. 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/GBLFP2301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a240e9e398b0d951ad9e7a16633b432794c6cda522c35163007b51479ad80a. 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/UKXN22259778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1379172fb955453b35d56479dcf1ab2dfc49537423178bfaf29e7cf0d7e665a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2301036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39c2483dd9e6bfecf8c279a45f4b7eec962be102e033cb7dd658b9a9c191581. 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/DGA082470526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c369f3c23b8dfb0dbea2173bfcda73423dffa61f662cceab06f279fad9880. 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/USCGH2434190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368419a2f5874441577df81d569893ada630ef1a4457f49d6533bcb782cd014. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4R2201659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7f0b6c85ff86dc8c5967b07ed6d9d25aa2d4ccff0175d10e3f13b1dfa2749. 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/USL4R2229620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827c8682c622f068620ac174d1607a68260440632bb22377af7860648ecf8a38. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:49:06Z), 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/USL4R2256523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368419a2f5874441577df81d569893ada630ef1a4457f49d6533bcb782cd014. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USL4R2201659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7f0b6c85ff86dc8c5967b07ed6d9d25aa2d4ccff0175d10e3f13b1dfa2749. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4R2229620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368419a2f5874441577df81d569893ada630ef1a4457f49d6533bcb782cd014. 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/USL4R2201659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7f0b6c85ff86dc8c5967b07ed6d9d25aa2d4ccff0175d10e3f13b1dfa2749. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USL4R2229620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368419a2f5874441577df81d569893ada630ef1a4457f49d6533bcb782cd014. 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/USL4R2201659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ac90f65b0070ece4d7d05a899cc806111e1e3529f8f674500cc7f52eebc8d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22281765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629ee7e9f376e4100470f2179c0e1e09006bacd414f74458337790668ed46be2. 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/DGA052288182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2a850b0e1be07b55b39b80963a6c596a6be96f4514402a48ebe156b76ae3a. 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/UKW3Z2201660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53af24b494ea9fc5ea47937616948ceba49ea77a1aaae17a697c5c44895e5648. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKW3Z2201661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb43c8fcc70e6d1ba406cd89ff82c9a72e97b6a52fb9753540b17433ce2b5f4. 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/GBBSP2250027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf56d221f73605a27cfca9390646a8139936a3f2f80be45b54a1e8c06bd1d81. 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/GBBSP2250024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758224a74075ef267a41960d1426c33c16796f815fbe86b15a55349215afe38c. 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/GBLFP2204451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddba044c94027170166aea8417236401f6bad6076680632ab347ba6acb76708. 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/GX53U2020585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a523d16dc3489af55f1d4965c253dd7dbd6dbb0aba54d6df6180fd7089de4. 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/GBBSP2150016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fbea226e54fce53ebf4c1b1889728fc21edf4b49cd50c655d9547425360307. 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/UKXN22146643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa33f8db7497fec83abbd81a823281cb7269b0a8aab1f42894c06385d473428. 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/UKXN22146645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f343dd7a34a1adacfe39e0548a9ecd6e0dd90ea2c78043f952d5978f9fbed50. 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/GBMA22162701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95406d80fb11d8fdd4b9d39328d70ae07b6db2b953f1a2fa88110bab487b7d4b. 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/GBBSP2150003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdf1ba45ebc540b3aae588ff040c4ab4613fe7f9378f99599566df99cf2aa46. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKW3Z2000716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa6b949fbc8ccabe7450e24855938dbc9412fb05bd1272cda11f76a0bdfa01. 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/UKW3Z2000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94fc3248ae8f89319ede94697d0115d0a595977239ba3916486a524be5d16d8. 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/UKW3Z2000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d1a44fe15fb071496a2eb74f75ed158bc350f753396799110171aae9e491a7. 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/GB76B2003901.