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 0x038b4036109cdd84759f32a5c7c02032a47d06ea5fd1ada80e50b096ec73507a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb7cb9ce-b305-41e7-a0f7-157632a1ab00.json and https://artists.proofprofile.net/proofs/artist/fb7cb9ce-b305-41e7-a0f7-157632a1ab00.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 0x1404040eae5bd592ddb785003d591609c1a0d5d221c514daa8ca26e1da32c2b5. 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/QMFAP1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072d86a9c8ff683efcf178c481dcf247307a0cfd29cae075690347f2621accf2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFAP1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f7f11bfffa2e969681808e24e6fb0764e71a70eefa1d4992652c253aceed1e. 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/QMFAP1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93acf8bec7a77015c2de157d952ccda0474b8184c6d6dae552a1d3ef4ccaecfe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMFAP1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cefefc31ef6e210ef6f82c1470f93198c60bd03dedc5b9e13a606f2dc46888. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:06:52Z), 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/QMFAP1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9c72243e80d9c8a033e55755ba22697ae609ac9f4f729185da52e1559b05a8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMFAP1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7602d90cff0273f66b018848a46dee7f5193bafee9533a3bb43aea2e766b862. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:24:58Z), 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/QMFAP1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1cdb537aa3c9e1beed53e95a8108c002a0137a4b390de7dafa912dfdd2b936. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMFAP1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e150652c67be04650fc46be8dff3f6734e4a7e250e8b8469a92dfa8d10cbcfd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMFAP1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc645562c88521934e1d31e67d0b8b8a507f85293371ee267f7416f866c2fc316. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFAP1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe273e15792b4b8c502fea2f50672b6fb6f2a7e4aea01514308564e9ebee51770. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMFAP1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddbf8bc5b09002216b9fb8cbeb4c422a69b0151d9e52dc5cf5c26634315be4c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMFAP1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61e561d380eb1cb59ccd9864825826ac97786439e7ba8ec4d1ae38bd8f80e86. 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/QMFAP1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8649b7c9019de59bbf5fbadd393b9287ea3cf1c1f96fe66c322aab07bb47c43. 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/QMFAP1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb8650c97b1365ce968574590dceb7afe322d01fcc38ff23f7913451c8406c5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMFAP1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ab53f03489552794f5ac9d068c4526861a383d3435aec16d53758ffa21f3ce. 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/QMFAP1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ce65c07ee34a3db670149e04d42f9f96b22079f9539b43f1c28327cc33099. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QMFAP1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776290827d6a2e264b355064c57af3e7e95e1daa42414a1894cd6e9916ddd5a5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:23Z), 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/QMFAP1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38f83f6c3e5fc9f398461b125421d0c63382026563ee1ff875559926fade9f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QMFAP1200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6623574d2e9fff9cc523db77b478d2ccfade2aae3d3b09ec02a3a9db0de3500d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFAP1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e04bfe763caf0e65410c9f57a685fb23ccc9d0f2b34244edfbd90973730da06. 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/QMFAP1200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf3762d7ea3f6e15213301e30e6bbe59616cb59f0a3b710d0ef00951db2b703. 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/QMFAP1200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32808e374eefa56f073fd5bf7d35f2433ced840fd3231ec9c931205a13ccc61. 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/QMFAP1200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbe2ec33bc0240e954d9527c29591218ad34728bce71268bfb9b21b14bc4a7e. 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/TCAFP2176052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d4450089da52c2364df80d77027c8378ba4e4e28543474761de3f80292e49. 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/QMFAP2300003.