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 0xf4627c891ca676a50471eca97b2cebed836ec2531883abb00a873c472b4d0d50. 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/3b5a85ef-ef83-4454-b391-f2032ac5c675.json and https://artists.proofprofile.net/proofs/artist/3b5a85ef-ef83-4454-b391-f2032ac5c675.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 0x422e02e22c9d579cb2492b5d8af6362d327e1162ad4055b9112d49b59c9a4fd9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CA5KR1533025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abd2d3a2393888ccaa8c3e035c4dd4716bb033447c7089568007b8f0370b37. 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/NL4NL2140649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79daa2f6a5b3f92287e566ed179193652d4067e6525423b1ad9f964672925102. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812112605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27b7866b15024e9cc4182077b20be5576b399d6e0a81b1caf69dda5842104ef. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH7812213247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec6688ce0c767d0a2d193257dcb9731eaffb62c4e9e95450ca91ada2833433e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812214160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c440bf97c9d3deb6b271eeaa1aee5d5d46c2b508f4719b568f75b92e07f4e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812217130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9434f83aed4074f68cb16ebf68cbf0ea38d31a6012f4589cc3fea8aafbf35bf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CH7812219663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0078eaa83367f81b0f83e25f08ef12dee7a64122dd2db8b593510fa5f8a70b08. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH7812224991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3196c64b76ec09b749d1d923581f8a844ab67739c2a5427f207640335cdaead7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:11Z), 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/CH7812227245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954eac27d699ad9cd99fb88960835902a42bbb77a24a44b0c42b6da47cb93587. 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/CH7812343606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4df68dc50b16e920f8e337990395840ff0ce9191a04c8bc1494c4202569a37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH7812344180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5f9528b3030de4b49a0d672384bb06ca1c9fbba4601613203c6fd41747f49. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH7812346962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8fab2a7744e5df41777a109b7e6ad54969bda032dc15ad0b7cd7ac10d73b09. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CH7812352269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a8a2c96c2f7553661b4a923349aaa9674b2936b31a8bb7857735faec1f4641. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CH7812353552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e4b012a32ae27c19bf13fa95fdb7c8e26996e422144c01c1e1926fd998cf8. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CH7812355781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc5f785ad1057d4f21f6ff850ea6ded8ca5b7d0b0a8772cd38d912bb4f62bbf. 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/CH7812371813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65554fab2bff18f0fbcc4b75b70d776b6d060bcfd4c0875219aad0f71b9b8560. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CH7812402743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef94ab1c975d0554d65ee4bb20deac90c932065e03e13c99e44a85c783cd6f7. 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/CH7812402744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465b33b36c8a14c0e99abfe40e29548d5487dc647b57565f689e7ae6b23c363f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH7812404931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606ab37f3efee179ccd2bebdcebe3e19ac918cc3be9c53460303e688e54b714. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/CH7812405151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591b7670c68042ac7fb72e1359ee0b713934b2d6288a1a679792734b454c415c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:16Z), 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/CH7812409448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d7c65d7516979901027ab8e7f839fad923db5a5e75efc7fa8ba6aa8ec093c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH7812408637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d8e44d3b577ef55e604db74bd98051cd7b6eca2ee895b7585dab915aec595e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812415834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd485038bf1dc1767bb26a783617a0153fbb74b102558df2ec5a013f11d0de1. 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/USA2P1802828.