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 0xae3226dce51ea6c4a0b65bd2cefee6097f8a022c0b896f187151b5392fdcfdc7. 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/8fa30c72-7cd8-41dd-987f-5c8c8621d8bd.json and https://artists.proofprofile.net/proofs/artist/8fa30c72-7cd8-41dd-987f-5c8c8621d8bd.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 0x3190bd4d06c7c0b002e3aa980f9150c33a257cb8f2a1c6c4d36978a3630e2463. 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/USAH92400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0ab3ef55bf5b8929be81efba050f759d9cde118cbc256e106e8ad7fe204a42. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USAH92400854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a02f82d86422269be3964f8ee70d68109f2f0e0568c647119ea4c038d4385. 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/USAH92400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2dacdf6a8e32644db879378be93c934eb7df9891fc7269930a7abab1e3a820. 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/USAH92300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b4d6bc086c40fb52a110c33f40dd6031ce848d9085b58f0425bbffbaee045. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USAH92201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb9fa856319aa36dddcebcb790159aae923202c0609cfc1dc788bd4337f141. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMFME1537438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141af7e7d5cf7cfda6dd3e0dfc679dbdc6cd9e3aeb83e86f24408c7a381f70c1. 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/USAH91201145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8a4ba28a31bbf0fd9e348960ca3f128cd0e93d72bf7363a39a2d02725d09d2. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USAH92500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c85688f9ef9f0d6b9c1a5065167a743ecbb5a6d679b3fc359e0181b338875. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USAH92500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644821c48b0cd9174eb3cef7bb64bc1304927592d1187b7b9c90f4b7fe96a2df. 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/USAH92500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8ba64c5a536688d4c1e030343fa86b61afb7de9d027898691a14deba37e299. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USAH92500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf9406ca82a7dddce4f98e5acd40983ec98a692b5ae2980b4a91569da70d2f1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USAH92500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f4c0acefc971a8b5cd6d59ca74f3b54e1b137baf6d214831b4b79a917296d3. 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/ITZ032400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e452aecbb0492aa5dbf67fef0539de2ae75681fc9e5668f6301d1d80cc28fb. 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/ITZ032400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca7807ca1f37a99451fb6caeb9e0acb03cad475a8cbee71fede3b44d993ddef. 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/USAH92401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31a2976b0d8cb996fe58e7832ff5ba1984116f12e84beb82dfd5c72c57b535d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USZFR2024231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ceb24c9e4abf7a37cb31416dfc7c77d9375f9d909ee2282b239d59c1701bc7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USAH92400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf479a2bca73e2329556c42ec3f23edfc8c82fea285758e80ff3c031d1f1d967e. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USMKQ2400059.
Fool 4 Your Love - IAMDJDRAKE Afro Soul Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231ec2865b583dc7e6f517bc41862e709a1d8677c73b59b75769ed39e04eca6. 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/QZ9T24000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010660d57efb65e072aeffb8d87d2a2b09ec9126cec50af86fc6b65a59dbbdc. 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/USAH92400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba50260d2de8e82f8b75377cc0b0c8508531e342781087180183caa0fee8880. 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/USAH92300351.
Tears - Carl Price & Paul Hawkins 3AM UK Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e095d8bab193a652ded7c62f73f69841152464e098beaa43f8a8d03d573204. 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/USAH92300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d66968030db944977d2ecb41667b52e87fc3d1265a9affcb342a1348f218cdf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USZFR2023189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d11180496ee140afc3e2d82b12116d335ad5aa003ab4ab7f23954180452a5a. 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/USAH92500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8926ccc556b1bb5d8d47bc52ddb7994c0b80f97c3a3845bc7afd0e9601b29f6. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USAH92500125.