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 0xcbb0045f7fd397591742a73c671f7b57c6d6084ee086b2332abfa82fde11a2b2. 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/5c362dfe-1b11-4efd-931e-99513db030a7.json and https://artists.proofprofile.net/proofs/artist/5c362dfe-1b11-4efd-931e-99513db030a7.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 0x0c0fd7ac0e6d63570836b565e771fe0d001501e0cc93b4a811d35c5a9d64e9a5. 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/SE52N2108202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb799ee140e48e528d27715638cb7591d87186e0c613865500c38e6710d58c66d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE52N2108203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6922dd8004767f671894bff62b986466966a885ff826bd07f2fa3c03f51b82f. 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/SE52N2108204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb20a5bbc0a678a164585fd1c1d5f1f2e30c1e725a710a8f93f8a181d07fd4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE52N2108205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384818ea2cc9aa4421515a4a38a6010f4eb5a6f7f44d903306c0be8fa91a3f8. 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/SE52N2108206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ae9133ce57e1954568626b428a5605c420bc79b78d1047287f92ed65ebaa5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/SE52N2108208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf1894be6f7368bacbe7cc7186bd807800b7b598f0097f8a60f929a761577f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/SE52N2108209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7d39eafc043cc7490683927f8c4ca6fb067aea49c903ef9282dab9cd06c565. 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/DEXN82369592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa555b77a586aa8048f7fed77586a546aedf853f81e3bcb497e908c33f118196f. 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/DEXN82369594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a906bdf4a61e5917ed498e6516dc9cf2e7f201975147b886079c3b01c8c543. 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/DEXN82369595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f05c7e4d57dd1aa3bcd692867015f6cefccda4be9b0a809929ccbc4cee5d3d. 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/DEXO12315767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8372629f67aab3ebf0b1d4ed217b4e0f18a78816ea7b06860d66d1d47eb361. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEXO12315769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2d87146b46a37e011a80c9f6cabff39e1c27f258319b1b175b579cd952a3b. 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/DEXO12315770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449a923ca3936c738c69a0ae33f930f9c343d3a1c60a0301439b87be2a57c393. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEXO12315773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b90efb941ec37a61bfb9f0dabec98a69418db7e70ec8782f4f0e51256d0702. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEXO12315774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d29f489504834f53c4788b666446f10947e32a28d5e6bbad1bbfc691fd1d3c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEXO12315776.
Rain Music for Sleep: Lullaby Sounds for Deep Rest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186145ba8af4aeab831d66bc9a1710a774733eab0a89c25e209ed04a39773f6. 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/DEUE22585732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015bee60a0146d5bf6569da6ad78f608c1d3882b2d834720479a1be3f916bad0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEUE22585734.
Rain on the Window - Cozy Night Ambience
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68b3df3d9762478e364a032b5361342e72537ad46f6d51b2abeb8b1898522d. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/DEUE22585735.
Light Rain & Wind - Perfect Sleep Companion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6e928f1f268b0bdbff51be2938b578e985fc3d83c14d9e30fd2ac88f5086ad. 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/DEUE22585737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25b53b6f8a56da4e6ed6d8732a86bfab1ee9d70e816b9834984e3a8885053ee. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEUE22585738.
Night Rain in the Forest - Peaceful Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3cea804ae6e3c3682d804cd925d6e449f3b155a06ad3621e35d2f15da64e27. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEUE22585740.
10 Hours of Rain White Noise for Sleeping
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa781ba2a673aa2a02409c8705aa6a7657a906efae519849f01f9f93e6ffd0f04. 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/DEUE22585741.