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 0x8a32b044e89d9a60f09bc7c1ef56ec23f3523c38f1b519dc9e5557d244339626. 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/ed93e25b-e967-4ee7-bb4f-17b565775e75.json and https://artists.proofprofile.net/proofs/artist/ed93e25b-e967-4ee7-bb4f-17b565775e75.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 0xbbef9d64a614f0edf56da1a3fb96b6b8d165f30ec209d8f872675f7d525131e6. 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/GBSMU8244193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b93e843271bb4593be144b4632ded91e2b2c6eb98acf6029a7231ca43d1d8f. 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/GBSMU8428398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b18911a0355edf75735fec6dd9feccd6560747431541d826897616dd7b012b. 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/GBSMU8428400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106ce8f53e661cf32f0d3c2184bba9a4813534d5bd4f521610676faed33ea4b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:40Z), 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/GBSMU8428405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0470773c08fe8d373db19032bd5e4d5e4d2029b08d9b771901e4c841ffce22a0. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:39:20Z), 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/GBSMU8652648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda019d17c0f1cf68c126ce7d476c59c845d0045b797d112eb7c823a909fc3f. 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/GBSMU8652651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794418ea6df7e23e6f8ed7a4def30f83ee49422f82931f858650f3c6cbd78a82. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:21Z), 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/GBSMU8662308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4242b0f105567ab2cebab4b233b2c6a4efb199a6dc18cca99fd98c90eaf0785d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AUBEC2050199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3090934439483831aca621ed7df4e71a3825df8e1e5a923e6244d04ff948dfb. 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/AUBEC2051291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133b3916d80609535724b4d32e01e38a740e7cad0c6f7283f87b3969df3b5eef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX89G2496491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23904a6f11e12ddcffbb472393d49dd83e4a46d31e160926603dc69861a7fe22. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GX8KD2466225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a4ef8324753f375cbb372b08fb22660aa0791bc12b71ec95a3c5093c0c0d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX89G2450582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6125f7583ada7b135f7301a2afb2ea25a6c6b2d61711c48ae5b053e23dcf0ef. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:34Z), 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/GX8LD2401816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82befdfda0e9ef39b0a1a4536f9762616eb3646c2cf274950bdc13d28de40c49. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX8LD2488347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae51016b78727ea7b290791d1c0788199a79e6b04773ce7c701073c780fad54. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:55:23Z), 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/GX8LD2447878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2e73505bb3254fed4e0b4b99fbec0453382319222cbec931fbcd57f4e6b5e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2413647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43c45a351f21a4170ebf4540e9f1b25054e30208862f5a228e1d198be2328a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:02Z), 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/GX8LE2462639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465211d4727fd19ba84d8785e587f822618fd02dc370c5425f0f625f508d4f9b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:55Z), 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/GX89G2420791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea9c9317501ef44ea93745246703d62feea833b58600dc100f820ca540eba24. 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/GX8LE2445759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bed4f6767b2d416c15f5d314aed4cbd2c735cf1104cb3d47152f73a06d3f1e3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2436352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac988dd40b9dad4cbe9dbfbac863d102e7ecca3563956d618baba1d9f328dc3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LE2460286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffdacc475f85b0745bf8d76f22bf5edf8f14f17d5b1071f138637d60a2dceab. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GX8LE2444607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5529318616f185e0f38492951856fb2866c1f13771b8909c8a083e9acc2371dd. 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/GX3HH2463200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d22cbd30256d01fc1eaf4317070ecc1e978631cd10d0cf5628fcfa88e3b6430. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX3HH2440500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d2b3b59ce5ff0e89c8b7f87d9d287bb7173df35ba0190e9094ca2efcd9110. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GX3HH2459898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910c5c99110abbbb16d3d1bfc7061ddfeeed705ae8cebb6c2e38d22e06a97da. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX3HH2466798.