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 0xfef8382a77a4aa52862569b3f5e786279e16bf9853eae1ae869e6f0e7a377881. 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/8c4fa03b-3824-4bbd-a20a-406e8ad160b9.json and https://artists.proofprofile.net/proofs/artist/8c4fa03b-3824-4bbd-a20a-406e8ad160b9.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 0x9d3d89121d97fa587d79ebb627125be3761043ba841281b77ec24c3510b1913c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRMKP0000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ee57c29df236b28681acbd570c3effc8fa3fa069493249a914fffb093a3d2. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRMKP0000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7037451f956bff10dadda9faa2b9214569add5de4239b50aedd556a430cfb08. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:18Z), 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/BRMKP0000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9472ba38fbbb4cebe464c015b5c508aa1b6eceb5320a08aea4bb068167804. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:04Z), 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/BRMKP0000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569452fe7d65a0a07005187c8644c61ea690bc96beafd391cb924b536eaee5fa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRMKP0000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf589853257c1a45fe20e9356900a4372865e10baee8eb3faba154884a2654d13. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRMKP0000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db63b1cc209f8229e78766b7b31fbe79d1e461769140cc82d8d485c853554f. 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/BRMKP0000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266a20fb822e4dc6e9af3a373acb67b0fff0b5f38b2f69b36f46a083cfccd3d8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRMKP0200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5e5d02715e0fd9e48d8d901e65c05bed2907714c141d1eb0abacf741a84f71. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BRMKP0200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305189bec806beb65748965dd9b381ab150d73fa2adc0d10855f50803c00f94b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRMKP0200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804be07c1a4034a7f5aa044a0cb64f3cca9bacf04e0f67f851ce0d6b95073208. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BRMKP0200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3812c4e3c6e4c7022e8042e82a606e195113a287a83d71e7f6a4cb9d6c1631e. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/BRMKP0200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08296307c31433621582136d8288831f84f04594c4503e25d8aeb59b0bc0cf2c. 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/BRMKP0200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5731e07c3efe695bfd9ec3fecff4275adf39f084246755bba3cc560bad98d816. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/BRMKP0401138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed1edca2ed73bfeb927670360407de0fbbdb790d60b7d91c709aaf8a77079dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRMKP0401135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38c8cb5b04ab68b7938aa2a148b34a17a4fbd4c3c85469e4787b45d62632a9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:16Z), 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/BRMKP1000724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a8dde0281ad5eb7cead25fd9454e2cdbeedd1f761456b41a8402136e096fd0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BRMKP1000730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0795202d0f64880eecf56c92a6229ee403cc5ccb5624cd3f045c010a2eb143. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRSME1100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d54786b87c9ae100e50e1079eddbbcf344bce852443e6e92bfddc4214951520. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRRUO1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266a20fb822e4dc6e9af3a373acb67b0fff0b5f38b2f69b36f46a083cfccd3d8. 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/BRMKP0200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f81878272167536bb3f381092ab1b966b13a1cae02d1eacceb06c94f6992328. 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/BRMKP0000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e0a1662202eacad2a0de189c40fb689a492b328d10c26fedfb4c94f4518e3. 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/BRMKP0700249.