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 0x7959f5f6409b3c4da64757c3aad602274a294bb9a386405845c1e6326a18b8fc. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43942572-f7c3-4c1d-8d47-85d2bad44656.json and https://artists.proofprofile.net/proofs/artist/43942572-f7c3-4c1d-8d47-85d2bad44656.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 0x589664869204ec3ab7001af7fd7386171a8119f3389edb461f9e740ac5a954c5. 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/QM24S1802345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de7611aef931c77e79fe6ef6209106e53fc4e1b68e037be48e29b04f379cc76. 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/GBUM71900859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9313a0ab5c08cc71662ce915c36375d4bd23ab79d938f05779079b0234faa952. 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/GBUM71901071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c7f4d61a394149752e9b28587a8c2f955eedbcd5cb171e8c243354059786e4. 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/GBUM71900855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4fe6126327705b37bcd6d3cd41d38194aead3e0d79e09c6f3fee08dd736794. 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/GBUM71900860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e10dbdff019cb8f973eef76d347c876559274c7dc94889fe7fabcc60ac46d00. 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/GBUM71900857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8ccab46f27c76f19dd2088674a284f4f05bc49a800f00771a23ce966922414. 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/QZK6N2349917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6add3f16ca702dd012b14b14eca33386a5ee851030e2a2c19045026c2f9b0ece. 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/QZNWY2145257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ed8c0beab008a17a58e65de635671963d357fabeec602d17ddc2942b471269. 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/DEEC33500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f233ff3af1b2d88b9cc362044d395770c191b2a3b82338161057dffb2a5a7e. 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/QZFYY2188405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b75e50737980fca289b565d7f9b6898ce94b6e67365776ab29c30f7bc6f1cb0. 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/QZK6H2004567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8946becebbd7960b50f92eabef06f629071894344cba1b2891f03f80b293466. 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/QM24S1703717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468abd6eebb987db9314f0d80ee82c713236f7441f2058e41e0f79df908418f. 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/QM42K1912510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8c91f644d006284d6042d21066f29ddd14beb4fd8fc03970e384d1dd38082. 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/GBKPL1801461.
An Underground System of Forgotten Machines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1ee06dd879f22e38100d451b545effb832e11372a05ccdae2b2ee3302a9e9. 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/QZES71808527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc82953e85582dc66111aead6a6e7c8e8b67f2703c1dec26ed7bdff9ed14f36. 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/QM42K1904569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b98a6f045d8f2f0cfbf363f802c65b20270c0deef48e560c45d9618a86d5489. 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/GBKPL1813958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8ee396c716c1cc7b659bd276527f46efc85d8b912b4bea9fb198638469f78. 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/GBKPL1813957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c29582b43b164a7baea053280b0d60cdf249f3a0c00ec998fd574afed59cad. 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/GBKPL1807586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42cf6e9364b1471ea190752aaf6cbaba5c867c38965347031ce4a42713e7c0d. 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/QM42K1974684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f9dc0d0ee2345b671f653c90d587086cee97db9c16c9518d15cb544f47e810. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM42K1992378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc612fde925d4050c5a2f8d40ff54a063d8dafe993198ab596f380c569caa4e24. 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/QM42K1925358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468abd6eebb987db9314f0d80ee82c713236f7441f2058e41e0f79df908418f. 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/QM42K1912510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8c91f644d006284d6042d21066f29ddd14beb4fd8fc03970e384d1dd38082. 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/GBKPL1801461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1ee06dd879f22e38100d451b545effb832e11372a05ccdae2b2ee3302a9e9. 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/QZES71808527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc82953e85582dc66111aead6a6e7c8e8b67f2703c1dec26ed7bdff9ed14f36. 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/QM42K1904569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b98a6f045d8f2f0cfbf363f802c65b20270c0deef48e560c45d9618a86d5489. 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/GBKPL1813958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8ee396c716c1cc7b659bd276527f46efc85d8b912b4bea9fb198638469f78. 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/GBKPL1813957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c29582b43b164a7baea053280b0d60cdf249f3a0c00ec998fd574afed59cad. 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/GBKPL1807586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42cf6e9364b1471ea190752aaf6cbaba5c867c38965347031ce4a42713e7c0d. 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/QM42K1974684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f9dc0d0ee2345b671f653c90d587086cee97db9c16c9518d15cb544f47e810. 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/QM42K1992378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc612fde925d4050c5a2f8d40ff54a063d8dafe993198ab596f380c569caa4e24. 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/QM42K1925358.
Midnight Drive vs You and Me (Live Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee235827c2f4ad281424bd735bb156333a69e95940f6534d634deaba3e3d5ef5. 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/QM42K1968047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3625b4ffa7653f03c09769aae8cb1c00d853295b2eac45f7b85ed6326d7e7e6b. 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/QM42K1985593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f70465408a02d37677e8d448e27fb871a5eacaec74f57bf33aaaf77727966ec. 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/DEEC33500227.