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 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 0xc39fa42d255f4651c35a29de27c0b899a8c5c2686c8a738bdc7ce12daed2d851. 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/e55549bc-cdc7-40f8-9d88-e451f1f76de1.json and https://artists.proofprofile.net/proofs/artist/e55549bc-cdc7-40f8-9d88-e451f1f76de1.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 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 0x5bd9745c46cf06b946f959ab72a4be09c3e81ca67c162e6bfb254ae528e3e651. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USFHW0600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f5a7288ad5e9ce875a664049adf179b806e885eb0d990a26cbffb5f2a37c0d. 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/USFHW0600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201fbe07742f07b14c83c90f1f00185fd5f350b5936afe28c6a7ada8f7bd3b80. 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/USFHW0600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587d19ba44a32ce49160b165d3822ab25fe3335ec843c05f03556c9c5f3bcea. 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/USFHW0600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e81fc41e07c0a39a034a41b4e9877fa6b6e905415da6e8458542c08a091f60. 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/USFHW0600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1a0694fdfca4dfc0a14d069e766cf0a96b38869d6081535fd4125c472b8f07. 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/USFHW0600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc921967517db9ebf888df919d01d91c55220848688f4c53cdfc4e9c1e83e1d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USFHW0600213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cbbf57af8e54b8882a5375a51736da15c9effbff68e2e3446b6b8047c9deda. 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/USFHW0600214.
Stolen Scrolls (The Mixtape Album Mixed by DJ Child)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf2875118f80039384e425586b2da78d7bfed2f0f43732f05d07bccaa6f7467. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USFHW0600279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f7988b618dfea30baecd52377336eb2e0255eec92ed222c32c78b06d531cb8. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USFHW1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aba8ea1ae9db2f6ca184a4516c93f378042b6a41262b3fe1f5916a68169222. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USFHW1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554b589ef14381040c6dbf8d2a4d1ce08bd28301b56fec288f8bf697d944f2ee. 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/USFHW1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44dab8d30ce57a590f32e871d5224bc885e020986f994b5d0ed2bc768b23276. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USFHW1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf90c01610703ea24ecf7a87fa67ddd6e3e0589fbeca111ec856963c56f294d0. 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/USFHW1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aeccc3bb630fb153fb92dbf0d4b21a7ce008ddc55dcabb40498dcfe9f010a8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USFHW1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00f8b37f90f88b3e6454e9d7c599f77e72c7b6af2d2bbe01356a79bb10904bd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USFHW1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a2cea81c3aac4736c4a681b81929e59657aa563d0e5e82f6ecb669453d43a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USFHW1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1e19359f5ee71f89ad91dd4358c8d233c7d37391f902063e6bd856e7ba3a4. 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/USFHW0600193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272336520dbb7708c0677cdba549a0874102d3cea39a54c2180e1cea26d19491. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JMA271300038.
Down In The Ghetto Mixtape (Mixed By DJ Child)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5fbad0390604efb1fe12867980033abedb2db2314c07e3dc754b72e2a64340. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JMA271600277.
Lionheart Sounds: Troddin' East - California Roots Family
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb46983755c0ed25b8cffc651c477c6423537508aaa23617717b61122bb14ca. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM91045355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835b032afc1ef0bdeb6da99e1495db6d5456e8d6fd3f86d30f2ca8ee81fba73. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USFHW0600332.
JAH Warriah Riddim: Zion I Kings Riddim Series Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cab699184b1214070332f9aff2e34b27e2a8da8e9641e2dc5af17fe1aee6ae4. 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/USFA91400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d01798fb959414a8d93fdd06af876e9edf44fb7c05999d099ddaae625aa3417. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USFHW1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8def3b724a0ea570387c1f3c3a0837a36cc0c59957cca5919e10679198bec7a0. 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/USCGJ0873326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab31686af6b6bb96c1d5dbd83a6ef856b23756355e135907a97971c8442c065. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USHM80819275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae03020e6886dfa31f0ef527de97e04d8a6b91163ab8de04659207d3a3d89bf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USFHW1400016.