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 0x32193a87758f7d8ead3653b0ed1af6ce753a5f9a480d15cc37cfe8e68d094008. 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/31df5b8a-918e-425f-aa9e-8f222161f3ba.json and https://artists.proofprofile.net/proofs/artist/31df5b8a-918e-425f-aa9e-8f222161f3ba.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 0x2db539feb375e341885941f360e95a65bf7b14ae7dab068d80a9129964b5c9ff. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FR9W11710728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654a85a9c57c8c94c779072de63d45c76d9e7dd07ad40209f2b002ab6aa06e5a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR9W11710722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87db7f9b441484c7303eedc7e8c5025e956c40808c991469b55bb4e129ff64bb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W11710726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e01205103a1096be63483605ab3356ad5df226830da72e4034dd8ea1207385. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR9W11917234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dbed43b88d8d60ae6f6433fcc25f8fc4e2564e69d34a52bf5c22ece236c7b7. 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/FR9W11917235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c5595231bdbcb5ff6ecc2609953973641ca69af306c0507d8a741b1b967578. 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/FR9W11917236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a25fa8ee79e00aa80fecc4c9d72a9fcf0ba4b996b6b7bb80e9098bdf9d996f6. 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/FR9W11917238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284aa313b57e5b96f3ed5c807994b06de8561d791ab8409eede876576868fbd8. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/FR9W11917242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a03c26d15bc7bed4d378993729f968b09e5e2a4d971cb224c385129ec90837b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR9W12220294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03431c6d3c087d3818e4ec5ca891991b7864dc246d14d3da31f33d01bef8b02a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR9W12220292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2f7fd6d9b4479d7e1bfac425d1d3dfaf43ad3086361ee4f4a3a097e2f321d3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR9W12414124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc363e1f18dc5448f0bd500f1ee5afcf14f89efe372d7811caac26c8e96bdd7de. 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/FR9W12414123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f9b21241c14c41eca0e645b2b630b452a1745f0f8520489af2de80647fa2ef. 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/FR9W12414127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66c5883611c0851496968d43a7eecec3601e858493e5d72a3298d44af8e9a2. 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/FR9W12414125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f57ec7fd0320599eb43a9d386464b0a09719dbe10b4988941b494f610930c4. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR9W12414131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8ed764664591b94623e06685af56594541c895643ff812997fd65ef465b314. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR9W12414132.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5704cb091f88e6e36d3d18b00c9c2f40cb116436dfb767395dab02ab884ae77. 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/ARF412100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0e6c634adcfb7937970bd4e32812578dec3d2d9828dfbc96dc9d425402ebe. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR9W11710724.
The Captain of Her Heart - Da Break Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5b3c59abbf180d05a351075bf3d35f7445ab71c623726c5962bc167621a64. 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/ARF412200197.