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 0x54eecb6c27cfc15f9a4187c0b4886efb6ca769e3eed78ffced506a278c92adc5. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f08fc49-d11f-46a6-8432-33a9eec2e534.json and https://artists.proofprofile.net/proofs/artist/3f08fc49-d11f-46a6-8432-33a9eec2e534.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 0x6c2d900906a6d8d52391586d40fcbbab3e95ce623ac38829872f5087a2160e80. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZJNH2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cc4173a99ea0176ee9cc314d60d41b2e95229ad0188d171b584674d33711ae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZJNH2400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3648b57d17c4281726fd3867f9c49d12e003fee4f096928f4ceb7792b60485. 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/QZJNH2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceabec23f89421b9464ce7e08689d7caceffbf558465066586faa7db52c506d9. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZJNH2400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de128387d28076fa6d48835723fa29ea7a7427acd03f6fa6d55f8e91c1ff3c6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZJNH2400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b44ddda739df196f495467968edba0b4c3492e2bad37137482d1e5a3d0b9b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZJNH2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0cc7eecdb1086201a244722471eff246bdce375fa635406aeaf5261988f20d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZJNH2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13962f0a4388867d6337d88ae5861fc4691ad646b9949b37237b94b668cf4783. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZJNH2400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64070445f9c2a9bfdfea241fcf1c454d8cb32cae162cae239e95a54996a5d656. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJNH2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912fef67a710f3609a28948a49170ebde33ad884b935f7f7f92eadd52c0c07b. 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/QZJNH2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581147545c9cbc76da04afde76970dc967dacb082443931b565abc166313261e. 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/QZJNH2400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576f941bb7be8e1d1d519578c33296f7d89e0939df8910b9a51cf21c428d5378. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZJNH2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100c28dc896e1294782fe937388cbdb34819fc8e88dc8d8cc24e959f5c2162ef. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZJNH2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8441f96e3b82c174feb19e6fad541584c70e45a00e8760cf25e4ee05cab0e7e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZJNH2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabca0626efe9cbcb5333da78d4adca426600732f4a1daa701839e7fa48be915f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJNH2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d55573ec80c1e9f502041c29753fd7542175cccbee842040a80379b653f48. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJNH2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6df28ced004c63ac3f14b12f295e2fd30f754de3eff7ea307c8df1e37664100. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZJNH2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e9f8af10df5fb1f5a72d94dd4b99212f60296cf3e3c5ffb0672fca81ce828. 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/QZJNH2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9603bf4f770f2923d8df89579b836774a0e7560967ff03d97a71815dfdaf959b. 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/QZJNH2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9a34d7d5bd58deaebf43fc0304dfe195a815a105467868bbb324b2213f3416. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZJNH2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940897cd291a84298829790ce3c221868837034cdf13fa44442332dcc44ca202. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZJNH2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a73e0b047b7de9fe500aca1483078942fd35286607bd6bcbf7dead41c5665. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJNH2500002.