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 0x50fca20b9c206d61348dc46222171e135829008d90699cb5c7ef6b6128218433. 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/6d8ea6e0-b965-4457-b5fa-963fa918a522.json and https://artists.proofprofile.net/proofs/artist/6d8ea6e0-b965-4457-b5fa-963fa918a522.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 0x1ead98ca464c38eb44fe9b3908926978846666b157b33f72ebb48c2db91d3c45. 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/GX38U2383280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f1c137dd353950273fe0f16b9f6b64e6d907d1266dd853d08147fed6b1d0d. 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/GX3HH2300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7bf1e729e0e761ecf6468f1d1b2d82cd2aae1429f034844d92d19d585580d4. 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/GX4R52314883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bb6c087d9ce2247afd9c857b69abc60b1ef68fb64a5a474fa048f07aab8721. 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/GXBDS2377309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead98ca464c38eb44fe9b3908926978846666b157b33f72ebb48c2db91d3c45. 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/GX38U2383280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc39b6e6b50fee319ebf43153ecb050a75fa9cd264780ce0445ec24d32d235. 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/GX5MY2357082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6279b0cdc2cd763f35b7cded07f560f1629582abccc9918cf8dada4090c769a. 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/GXBDT2359306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f7f3f5f2187edb82c0a1d4fb512940c454d54194a4e55167b895d2a32c1bd0. 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/GX89G2425253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6279b0cdc2cd763f35b7cded07f560f1629582abccc9918cf8dada4090c769a. 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/GXBDT2359306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c05b4d083bcec0158dd5912d9a0aa3e272ffa742132495f107bd54b8fd9ba8. 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/GX8KD2493451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532c973c5fb85d65a98dd00a4cb789b650544345b844b483b857acc72f21589. 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/GX8LD2485772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaded125dd6fffadd311e776ba10f600e5ca23fa388ce2f89fc89bd59d221c3d. 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/GX8LD2446770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04215a33ee15a4fedab2c323af67c37646bf3c6987cfc3c6d798a595afb523b. 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/GX8LE2410714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c05b4d083bcec0158dd5912d9a0aa3e272ffa742132495f107bd54b8fd9ba8. 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/GX8KD2493451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f8b24b1394bd326b1b52e87cc8d14d3c302c94089081ee437ca9658e96edd. 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/GX3HH2467558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe54892c2ae3cbc6ca15c872edc25502c00fd696b83effc4e215d8a9f96520. 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/GX4R52419430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea23b5484f8fc7e1494895467d8f546235621196dc5972811a700e359203a44. 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/GXBDS2434861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead98ca464c38eb44fe9b3908926978846666b157b33f72ebb48c2db91d3c45. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX38U2383280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532c973c5fb85d65a98dd00a4cb789b650544345b844b483b857acc72f21589. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX8LD2485772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a585d6ae2cc5be3a607d100580955af6390a9dac0d10ec10e8502e1a9dd23. 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/GXF972456941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788bdc1751fcf06371e0ee685e14729e93bada2c680768d917491f298c4996f. 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/GX8KD2541226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a585d6ae2cc5be3a607d100580955af6390a9dac0d10ec10e8502e1a9dd23. 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/GXF972456941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead98ca464c38eb44fe9b3908926978846666b157b33f72ebb48c2db91d3c45. 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/GX38U2383280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7bf1e729e0e761ecf6468f1d1b2d82cd2aae1429f034844d92d19d585580d4. 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/GX4R52314883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f1c137dd353950273fe0f16b9f6b64e6d907d1266dd853d08147fed6b1d0d. 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/GX3HH2300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672679e6df8b687df2b91fad0402213dcc8e78e01aa037678237d7b9e2a2cdbf. 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/GX3HH2434165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb7066b7bf0b04bf810ea34cf11738e2331632d14cdc28528619ca80e5e32f. 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/DEA622401837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81809f041d5e74796654adcbfec7537a34f143af27d586596576fa3472ec0e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEA622401323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81809f041d5e74796654adcbfec7537a34f143af27d586596576fa3472ec0e. 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/DEA622401323.