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 0xcc9d14703595be1bf78a926c2c05cc9c9883f301210a391bfdebfb7b94d2c8c8. 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/d17792ca-935a-4708-901f-e3f2f074da43.json and https://artists.proofprofile.net/proofs/artist/d17792ca-935a-4708-901f-e3f2f074da43.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 0xad60480d45ea635b1c86329a51f669cc085d1edaebb1b0ae5b6a1ba2abf29cc3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFG2471720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453e58349d8e5d6813b5037f78f421d410982db7b3f538d5b712444a49f0afeb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFG2471722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3633ed794bb1cae62c6df58b016168e498c395eaa2c40199075c15e5ff481600. 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/QZWFG2471723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45c33b20808b34ac15803337afb8dc1c8d7a083b5015cc5f0a4f1064ec1c56f. 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/QZWFG2471724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451ee97865fc4c78ce9aed2af1f2125ee838e1c4bd99175dd6299feaeea3bf8. 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/QZWFG2471726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62589d23fe01a1a6ebce2b8eb1c6f8e6d88ab8c6c32e69cd2cf96bc67ee20fe1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFG2471727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ebca722cbc2e1c697ba480b3072e797d1463d94f36740924b3ed9c21548c17. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBSMU4681257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01de8eb16e2b115c7015cc19ca21673ab00edd47221402818d25bde272e1d61. 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/QZWFG2444108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de6d245b866acc80e643289b9c57b6043229967b91a7bb2eae7b46473cb5bfc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:16Z), 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/QZWFG2444110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7111c91a54ecadb26af525fb7a4286b6189267a259b8d9a3ee95c7cf14fcd9. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZWFG2444111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fef2c563ddd3adeebe4dfde15e41e605bc9d8a5f79c69dfc40b2811991ad17. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFG2444113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411de700a8a3746e16773c562565a4406b2d9ca3cba3c4d42ffc60ce90970248. 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/QZWFG2444114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912f99aaa513c116f901a58b80cddb527bdd788358ee3250e8faef50a272f69. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:51:23Z), 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/QZWFG2444115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba4ccdd867522cb62c550521c1b3e3c39684d60943f0a2f9fd53f2043d930f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:30:32Z), 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/QZK6G2439106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5322bc549c146ca228d091312229ae095c3e0e7c64e06adc3ea2b964c45370f7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZTB62427007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c17c429da0a221aaae137ce79c8d9563286f1a9367a1f2a9b790fbcd75dc6a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:15Z), 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/QZZ7K2436297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb5a847a06d1092b6728fcd1178ecf7357f1adc566fd4c1a75d52dfd59e4a3a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:21Z), 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/QZZ7M2427065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bf7ecad46bb981e8a1fb9af1c0a006ffcb9e281aa52a2f47d877d471bef778. 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/QZZ7M2427066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e47ec9e8924f30ad9e168fee612246a125f8ae50e2d216357de01c89b479a8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7M2427067.