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 0x664d699f64c297a1eabdf2c449cef87e17aef24aa33ec44e93d8400bf3c8dfc0. 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/d0183426-8789-4a89-9244-4695e94cd212.json and https://artists.proofprofile.net/proofs/artist/d0183426-8789-4a89-9244-4695e94cd212.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 0xb1c83a63bf90096baad30b8ae442a8a863d1276d09565bed2e1f160d83e87d3e. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/GXBAV2418062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62392d603938037b09a9768694cfd41eacd965bc08c085943a9bb87e7acb1387. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:06:07Z), 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/GBRKQ2406378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6f441cb786dab4432f054669bb47886891c3f29b4d12bbebab185e2eccfbfc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBRKQ2406925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8312381f8748393d621c09165dd0ef7f793aa352be2faf203f5e576a9ad208b5. 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/US3DF2434605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f8e8643c08b3c5f095a07b2d01f8518e67f6c4c9f13d0c5b8830c016fa1bcf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US3DF2434606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c604190bfb0ea0f4e2c822a9eda2dd5256f4f2c51fc6edeccd413f6ebf8aec. 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/US3DF2462627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59e8869518827872948bc95e06008bed1727bb0406581d1c47eafe001889e63. 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/US3DF2461947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a53067adc0cf5f6e41be963c4e0d017ceb732af29b4e7670766a58a40a004. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:21Z), 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/US3DF2461945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c34962bb91d7f72b943afc2b3f5925d791b11df65ce9fbbf1d69845c498da05. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:08Z), 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/US3DF2482296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb42796ea46bb44753839d4187b91911f05d0aa2150c354934b1df6b2b82f3a. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/US3DF2482297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc8679a7e96bf2eaa52f85a52fdd430edbd893351b3419274f5f774f2001639. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF2487134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0044717ed81797494c144522f60b444d0cbaa978c23d2378e43ba882512e763. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USANG2415439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2527989ee4b9612946c782d9ab7bacbd304fa8fbe37e9b7e43885cfaf4c3c2ac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2415438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b40461b3032bb21e9c15b060697774579a61057847e10f6ef509d91f85cf7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA3A2412207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5afb765e319fb311b9fc00e47be1abe469251d6fd15588b2b57801c043a3ee3. 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/USANG2459394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7467ac40a378d0d0a0466c0cdd0cbbda63112dea2c512e904f9389cf7148a2cf. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BRTUK2401604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e56d6566acf81bd6e517cc97f12dde50868c13da53acd467be15770e53aa0. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US3DF2502081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669c30aeca59ffcfcd846885209d007ce806b4cb1dfdebb1755b0cea60b2fbd. 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/US3DF2517389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcdfb3b321d2004557cc139a9b61281853e0085c93f907145f86f237bfc0e7f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/US3DF2588519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7a621f5b88756cc98f99476a6ba64fddbcd6d4a752b6a5afdaba23c21aca5b. 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/USANG2528259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e9a1d9203ba4e989bb0ddf60dfe9f9b765d7942338c00aa8c19f377cde25a. 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/USANG2535014.