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 0x63a5dd26f99dded32fe4e0dc69e6d7c1ad4d43c92e13bcd2d55006f604b56b89. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e235768-b553-41cd-ac19-0b16c0b8a7bf.json and https://artists.proofprofile.net/proofs/artist/0e235768-b553-41cd-ac19-0b16c0b8a7bf.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 0x00a5d2536e722cdf335015f8c81d393c16b68cf62df6a903cd56ce42adf76060. 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/IT7SU2310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d05edca2a3d27531b4464307ef6cd0e1cc29b2506af6ceec72a1531f8f59a9. 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/IT7SU2310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df6a54822cee51472e1e519fcfc7b4b9384fce03b7d2f1fd8e5be2638dbf53. 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/IT7SU2310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5580dfd10200cdbb1a8f26cc6aad9823f10d646e2bb9d958d948a71ebc3cf7. 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/IT7SU2310005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf5b1a44bd72abf2f0ad349e01aed7e3229cbaf3b4b8e55a78ea6d2eee7bf74. 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/IT7SU2310006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf28b554def3d197b1985a19033423d92ce87bc4687159d4eb8d3385e022618. 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/QZMEM2371398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed17a8a10c8069ba29cfc23e6b89c06f1af62bf171cd6f88e1741bed4287402. 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/QZTAX2298117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2c3cd587f008907abbb894f6f5336f3c70bec6c1eb6ca40a4bc64e2491b26. 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/QZDA82336592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae000793d1e89e569bc3575e9a1d459f0e7546e5381d136e4647f9912c06622. 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/QZFZ72309683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5830d26237122a824f8824720dd1b1ffd2df144a115326f0900f2a21978db8f1. 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/QZDA82336594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92180d99f977d51c5a796a67e3997ede513cf16f2d5b1a5a1c322a6e8acbb68. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMEM2122191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b2fd3fc01d4e0646c7eea96283be6e77e71905c85fdb1be8db4b77992207a. 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/QZNWS2118115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed17a8a10c8069ba29cfc23e6b89c06f1af62bf171cd6f88e1741bed4287402. 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/QZTAX2298117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf8d91090af11244f601cfc666f130cf3720707efdb859253376418f133f27. 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/IT2J82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e145a407333b808756df2305596e411c66da52f0977155532b62e9736b7a4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IT2J82200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478faa46442791a6fb8d7c04b601ba51d510c8c911aa0c08ac67285ac631dd2d. 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/IT7SU2410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec7e4242c611c7fd79e7d21aab6ae57f99f6074e369f81527f57b4938372220. 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/IT7SU2410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb835f524eb2cf1446e13e2e1e1ad36388cc563b84f69131df24a9e606050e8f1. 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/IT7SU2410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9524e7a0eccd720751491bff177d139f8e85a5bd920113afd815b50caeb512. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IT7SU2410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7596a105cca5f793285674fbfbd659771dd9e491dff9e2bd8de997750a3c0181. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IT7SU2410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6374b83fba409a7076620cd82d968d1c2670e1e97a2bf4543fb8feb680c03ae. 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/IT7SU2410009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe1ab4d795f13344830393edea7bd387f0743b5688c1952fc7542c8a1e32ebc. 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/IT7SU2410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74741bf771ce5a364756765ee4931b4cbf9503be0a947b5502fe04785d5027c4. 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/IT7SU2410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b45ff9e4f3fc3edb3ef31ed34e9c20e9cea83eb19a523338054ffc1513449b6. 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/IT7SU2410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab548e2689ff10294beef040ff471d2d805b5acf884ca220d976119cac2e8a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IT7SU2410013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01725c1982703a24ea274b657fd4ca503928385211201c9af50620ea9f9eb89a. 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/IT7SU2410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b9af013cf902cb5979f7e58c0b6cfe4baef461a9660e2c130002ddf80bc2fc. 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/IT7SU2410016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb98b34dca1d2235d9d94556895755a0c4b6df16dadd03c3400199f4b8fca93. 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/IT7SU2410017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29179ff542fd2762f95226f937adf34afeef862751ce0c1ca797c784753b4537. 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/IT7SU2410018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bbac8d59081bd60ae39487d4bdf81f1ebd50876c59d50412310418ca19022e. 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/IT7SU2210605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e1decc3507dd200134ea1665da0717bb5d1a06a6a94e8e790d7cfdbfcb6c69. 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/IT7SU2210501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa8c746a84fa6a1ec0750774826663c2130ef93079b072c7a0ef79b3d1b1de. 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/IT7SU2210602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e5609b5cd40537c6943566fc66dd859e62c6c8e06cf59e70e2a541795ab8a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITFR82410072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb94dfbc47f4c066d5e38768b312077920dfe43dbc3baa524c7622bddf349be1. 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/QZHN42279591.