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 0xbbef810b1d14d3d4b143791b7da39789781c2ac744466f4cd1b64f8fbf52691f. 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/a8a4f119-62af-4829-b118-fb404692450e.json and https://artists.proofprofile.net/proofs/artist/a8a4f119-62af-4829-b118-fb404692450e.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 0x42b651b05c690a0667bddf1f345914f3128eedfe440fc16ad84ed66e2d7b9829. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU1795481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1571511d2225ac9ea40e9eba3b896bc74377cea614c22e005774e3409c1707e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU1795482.
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 0x8962b0b7d7ad7b1078327fc7ad0d866758fd21b3da765f8213da62856d9215b8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:07Z), 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/FRX201900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc674ff9e50121dc5986a5b0510f53c376026e17ada966cc44dbae646933520. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSCL2035078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b4157ceadb15f1de6a2938051528523f1e9f89f94e30097393dbfb848cb1c4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CA5KR2172569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27a7379a3165463e9d2c694c52d7dc4046006d7009ab4d6ee94e3112f6a0ac7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:33:34Z), 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/USUS12100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1dedd6976c8c87230640755c7ceec80ed2457460d8b796ca3b8a3923344f28. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBJX32264806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916a0d3e92fa29a26715f06c67395f6a4b1670b689287fd84feb5dc56336c3a7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:53:10Z), 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/GBJX32264807.
Last Night a D.J. Saved My Life (Smeddles More Ass Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1974b5c1ce183190d66e1f0d20c5aa1f85fd27c280a22dcb5ab852ab52c75e63. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:24:21Z), 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/GBKQU2420587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd565994d6f3c08a4940ee254136d155dc20bdbd01aa5e4878471e56e56662ee. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:09:15Z), 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/GBKQU2420588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc8c34408cc82358308a1e392fd81cdf0114e7ff7f22bfdab616595cda8f0e3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKQU2423051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2604c1d9dc01ab12c34be46b62ea86710e82f23d9c253e4591b13bd393789d. 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/GBKQU2453360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ed3539f40a7182718f5c77ed97ea0fc270615d20e0de7f75c8484a9b194c5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USUS12400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1963c729c477ffdc6bbcfb9f08221930634619e475113fa3c8f65bc4c6a5dc0d. 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/GBLV62404820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8fad6ce2e182c0c5f7faa4bdc3777ae5dbb208ff92408daf00b46e07a99900. 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/QM6P42515635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335277cb9932735f61e221f686a83ce2e31cdb886bf42a8db4a4cfae8d4997d7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:20:45Z), 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/QM6P42515636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95c18e8da85091ff5c100332cda54a102a0b97df751ce199d15c3291c72e9a1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:12Z), 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/QM6P42515637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ce3181a6aed08a8c1fc487a751a73397d535bdd1410329f26276fdd1052e3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6P42515613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a853f4c41598d607eee056d78b484819650eecb2d07b6c00300f36df4e2633. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM6P42515614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ec005031e02b1babc5fe51a3257f3cd69e2989e52c0c1ed457aedc5e901404. 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/DEY472378228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334b6ef634bb9983316e3dd6f413bd48b3909b3dea8ab972e194421cce9934a7. 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/ITBHZ1500827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8d2420a0664f43ddfa4816883a1429caa07ae36864e3349c520916fbbe2e7. 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/ITBHZ1500828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b64b7f5cde389c5d3d320338f5a021c036dd53258978b35f0f04611658c011e. 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/USUS12000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2cce755417ec0f0f0ac0a11e6c23306b22ed2e2a39e64ca8beb16cda193829. 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/USUS12000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d4c9ebd187c14b0039344d2448ebb8731534bbd15acd127b1c13c07e47685. 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/GBKQU1914183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed75213ba1d7004700455db5685893d3be3ac5474b992080ef7b02710454f66. 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/GBSCL1835074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe990f62a3d36089a5860a5928b1e80d8964c3494f9f5c9b414ec683c031aa0a1. 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/GBLV61801533.