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 0x90485214ebf57c6f832f8b98551eeafa87e977115d9d4d0fe7492ad3da1e97b5. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c783bc6-79c1-421d-80c0-2944e9677175.json and https://artists.proofprofile.net/proofs/artist/3c783bc6-79c1-421d-80c0-2944e9677175.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 0xfc2fc758931d090c4cce0c1619f46c197b5c477b421659e07c9a7125dbc33bd7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMHP2009587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887b3bae51b912ef4e60beb27c3f9e9a4240d8d1d9ef57b36d0fdd866d7ab58. 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/QZMHK2000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfc6dfa6a6c6d93b9ee42981869662fea31c19deaab175e7f45ece4ad1e5996. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHM2080314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb04d0065eae2bafcb618f860735eecabd72bf23bb008a81b7b0c028e429c70. 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/QZMHP2014716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e4050375b1e6920bd3fd5fc3f15e40be38f760289e46b754c7bad3cb6d2ce. 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/QZMHN2047121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8335188993bd991b7f517837e00b716987c0a8dc5b2810ff96bca2050f29f464. 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/QZMHN2071269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa13b0852f1be68ff69e65f160c4bb98adaf52e67a0025ec830c4347caf027c. 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/QZMHL2010655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8022b8df6a101504ed4d6a7c9b17e2c3ced5d72ad0bcd31b62f358ea2a83b6b. 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/QZMHP2056235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3779bb026a52bfb5e73f830f0eea687d5b139a8b4312f29eff1997204fd56f24. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZMHN2098137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca578032d50c3fea223d7eff68c6027190a53c20165a79b703b3a6c7f367f494. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMHM2010103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a1caae639f9569b31d1eab24bddfaa2cb9c05142f576c01cc6ab99c55b442. 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/QZMHM2015392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835082cf91765b806bbae7aa97a7d25299f506dd332c1708d28dc365e80f1363. 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/QZMHM2055955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db4a7c9fed89fd24d1c97a7b316eea61c51727637303be43d0e25dd6a4bdf7. 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/QZMHK2060963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4abee1d1ceaccd358fd2421ebd61b9a89e59da6a0b88f713a4ae6b2f6d7bb. 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/QZMHP2043164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de7a65c9709065d2f387499430230bc96eb935de1e9902db8de1dd35935c4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHL2077823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ce6be097076e3978024573276fefb96583dd9b3dbb6f174fb1170a75add3e. 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/QZMHM2066186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466ed246bd43313d06301644316f64ddd04232de1b0594e1dc8c6b83a260a89f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZKDK2177496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07daad351de8992983a706e5e95d227e68d9c1c989f03b9e63f8e3f5734c5c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHL2027137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca9facb568e434b3e0b50263534093bb83bce41efe84edbfa8fe01093516c6. 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/QZMHL2017868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ebebc8b19f165ce26a8cf67cb5ea9136822691bfc147427594969f7ef25b9b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZMHN2095486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67d600149dc9511f17cdb4196e05be49c5eab0b0623f5e7e9a9bfc2d4932720. 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/QZMHM2096369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f266552211b358a2a3e2e5be00c20d7dea14940533ba1f10a32f63aa8bfc16. 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/QZMHK2055025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cdc8807df20aa2ac598d7c06ae6e91bf76e46b18e79ca3d84a424b3807b81a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMHN2068482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be3ac9aa33928d3d63df443c469da8aa30f21481e358ba80979cff93f1bcd8. 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/QZMHN2065967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098bbc540fb3cf018bdc5f60dbad00cb0e3c33958d15945efbbd7e802805b3e0. 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/QZMHP2024417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8121ef0785e7fbb13a7dcb8827607bc30dc3e514a06103160bc9a1e13e753eef. 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/QZMHP2054390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a1a8b7ca53aed8a8cf488ed53b85fa2287ed082c5d9127bc434c5ff21799e. 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/QZMHP2010455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4962b7322d81c76dab7e57cb7b4d610712c7edc9af3dfc7aec534b69497553e. 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/QZMHK2099196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3567ea4ae917facf49cc2f30d9ce383beb75e0bf7063727977c5024930b98. 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/CA5KR0005576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079bca1e53126599775010cad1bd81b9a7e5abe1c5716f3856a49c8ac0732ef. 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/CA5KR0005561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fefb31e2b04d9828a4b4054ecbf8bbac0ba8b6837f2d8e826289829c972154. 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/CA5KR0005562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f151d96d3d1fe7602f292c0eed7d191125124310c5fe9305bb977571b677b3e. 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/CA5KR0005574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2802ca967f337f42a5f897479f7dd77b6cdca01f08631480037fc0be772fb. 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/CA5KR0005577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d7ca2b43b4ffe00d7db70b483c040f7bac47df423f2a6b76a078fa4871a30. 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/CA5KR0005566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe601226cdfa4a2b342df6e6e10fa768c66afcf44c885e87e3d87723c8c6b7d74. 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/CA5KR0005569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a15794e1988f420c4bbc1fb7639bb435e388f7d37f0c37acea546d55aa8a69. 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/CA5KR0005575.