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 0xcd30b97b2da424b1a2b6c21f20a8f8420f72514429070fca43bf822568e8680d. 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/f82581da-61fc-4272-b2ab-6690e28b6d25.json and https://artists.proofprofile.net/proofs/artist/f82581da-61fc-4272-b2ab-6690e28b6d25.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 0x2f7b6b514c42471bec4ae8cb2211bb7e415eef8bafeaedfebf22038b724a2810. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDQH2412898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f51c60144b54d01a250355724bb3462c759148cfb80091562e4b606dcc11393. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2412899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bde7163f122c2f69f69ee1b58522c67ddaabc6877accd6b7dc114f3309355a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDQH2412901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f92b01d8fe49882e5401a8b9df8aae0342394b71d052999cb57a7c3da1ca46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDQH2412902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d923ba6903c0771c54690b896f8d2039fc37cf2f974b4b141361f64b8342d7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2382092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda89cfb2f99f303cba5a062304b6989216033bb99c3d956a845777e8ec100702. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH2385497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24227d4b911fbd7b5485cf6e566b41349b92fd458662735c023f23386d05d9d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2226093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad01e0a8fa8af52ac21f97f387f8a8c0a28d5a302ca85306c2dcdcaa30b6eea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2226091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b431c9ae45979e8faf99fc45179aaf7231f15fa7e35272bec8f641e943457. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDQH2414169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71c45cb3ac9568d6deb9793d5e715d3c9cf7d53033f366b4308b0df5eefc09. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDQH2392625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4425139922898fe69837ac90831af118a42d814337122c423e61ebf914316db5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2392624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11672af80fb0963abaa791b3ea8f63f1aafc08381489b901659257774697c577. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDQH2392623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda89cfb2f99f303cba5a062304b6989216033bb99c3d956a845777e8ec100702. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDQH2385497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d923ba6903c0771c54690b896f8d2039fc37cf2f974b4b141361f64b8342d7f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDQH2382092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faeaa6f1de4cbda1096d80edfdc48dd640b6763f77d81b58d5d26cb7806264f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2382091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80be61cb85ced8919a989a3364fb052abb51e7a480bd7c0e003a0979b6fda8a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDQH2380993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296232559f325a52cf1386abd718d503b5deb713d25819794308d57775562454. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGM2295063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecff3abdf02feaa97f87d7680329b0b38f023d41497a205e276f33920a43eb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2201326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8107ef7f93d70b6b2719c10155647a6512fcccad7eb7c91be4fafc74d323bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USL4Q1995747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4aa259467860625c6ead9ae6e93e2652a39caaae288266ca829e125cf3917. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4Q1932271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a42b733396c9ab6eee08ed4251826245543910a8daa7b89da81380c152d4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDQH2386062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b833746cbef8bdc2c97af0f14d91785159566bac06c4cd10804126e7d4cfce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHM2356809.