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 0x060c9af783c6c4f8ab611c48fa7d4b843cbfdc30f2b48ace53af21e4e54544ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e43f7809-2d6d-4006-817b-ba2907e4fd81.json and https://artists.proofprofile.net/proofs/artist/e43f7809-2d6d-4006-817b-ba2907e4fd81.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 0x8b5b09f3b4b8eb022c7ec8dbce0bc132b1c0bee2f1aab3708db8ff2f09e3637c. 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/US2S71133002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9088be78af77ad5682d310451006de59b0cf17b9c3d083c70925199f35299a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US2S71133004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a179693a11676d4d240a67d1d3083e6e9da02593e50b904080fd7d1001e96b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US2S71133005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e34d1e6ad45e8e71cd3cd3dcf5cc19ceb418495a163973e8443f25ed90ee31. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US2S71133006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10e9b41b0ba2a543c6e0242523c2dbc7fd9fbbb1b37f9431eaec746c7dc6293. 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/US2S71133007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb92a33abd123a4cfc5bd1f95dffd4972f6d8de12e12cc77829212a3bcfe5a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US2S71133009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb156f37d18984bdf1bb750cfe90bfed6cfdce0d4277f3f0f30a2a43046d2e6ff. 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/US2S71133011.
The Minimal Wave Tapes: J.Rocc Edits Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e26aa8f2590646182d8704cac31a07022c70c47fd902ff0f7c62d48752488e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US2S71465006.
Sylvan Esso (10 Year Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039fe537e44eeac1501dfc67cc8c82e865edf1888a243df71a806b35efd93a29. 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/QZPKV2401206.
The Shining – the 10th Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac35d5d059d21d36d5a9fbe1017e44f7852588022e37fc629181cf9aa2627c3a. 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/GBEQT1600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c12589f777a150fdc42b1b21d8ba903ba865e26ece8912c37aea020cf5f1f78. 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/GBEQT1003092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673449fb271071ef76b812890044cc1ffc6a920b2252f315cc0e5bcfa886513. 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/USUG12207437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143ba79bd0cab06a8d3a7bd777f41484a21e6e3703b0c1541dce21f7fa69abf3. 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/US2S70650013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e0c831e09f76bdbbd96ab4dbd56a871c522b9a36f20ac270b28f01cde7a4a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US2S70786005.
Rap It Together / Funky Crawl (J Rocc's Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa912a99b704a4841aa07a43f7815188462e147c8e802befeb2fab083eaf4d6b7. 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/US2S70730009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5807d894eef02cd0e5a03c4e8164aac66977369b228c81806de969eb55523e. 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/US2S70730016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230bec00db8e795ee34b94d4e2aa9c5f05efc582528e4f15e4cbda161beeca2a. 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/US92U1906401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf102ada3323e2815bcdb8bb906ef6805285b162274399852bc4084e89fbb853. 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/DEG930810397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee880097a7165f4056abfbcbed7013c0077621481dc55e9648a82d5a5e60747. 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/USCA20101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2a7874db60e50705c9082d723626fda8c9c82cc6e77232425ae5d793e9c83. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/US2S70786006.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a4c890f27f456b9319be5176e3781d7d6e96a4efe821f0ee118d249fb15c13. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US2S70730008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1c7d8918447cc9726ca097b1a15fd4fd22d41fd48cc8ea46b3bffea329b1ce. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US2S70755011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a1ca99d7d49bacd4feefbd55cedf76374c9d9b48755042ddf2c0bf4e62a46. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA2P1961643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c13a8ed7ae1bdc57d1ac551dd683daf9c94143bd4e9bd3cb7cea05bd718a579. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US92U1906406.