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 0x2ebc858f589fb8a41853b0c2e3c09f4ef7454203391c427800b80b7f469eb28e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fabf27c-8224-4ced-8e63-ae603604301f.json and https://artists.proofprofile.net/proofs/artist/4fabf27c-8224-4ced-8e63-ae603604301f.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 0xc0c421cd6f9a70738c8077b0ea3762b6bfe17c16b9d2ca31f9321e371d74744f. 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/DEUE22386997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b1f7fa7d7dc3d9b1ffde6d556ba260303375b060c7fb0944257495af0a863e. 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/DEUE22386998.
White Noise Arctica - Loopable with No Fade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa528a416d31a9bb9ba3f03c26c93e3d2ba2a74c352a03e65b06ead13af006. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/DEUE22386999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60c91b91f76ff4f8c55686daaadaba38168f925143c65b75ba17c470b0d65a6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEUE22387000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46df9f70f0c719286ea9eeb32b952014eef26f0bd17847a6aa1fe7ebc23c5dea. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEUE22387001.
White Noise Water Bubbles - Loopable with No Fade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd94326e55584a1f6dee85bde69e87a23a1e57571537a9ad89e6978e4a28033. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEUE22387002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded101ed85207f704cae9e4ba81fc327f22bb47575d5963833792e319eab206. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEUE22387003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e5d7134851128e7d3b9d75df0e54ae12169d1352338111f410b35b8a1cbce. 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/DEUE22387004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442c8e05122fb103ba29c4037ae17de745e1c38809964cacb6f0b7464d3a861a. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEUE22387005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47dc68d6fad4dcbe2ad6d73c6af856a1400fda0c4ede380f22a79f9f95a429b. 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/DEUE22387006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e1a41f55ca9729c676ae57ea46b18e5af549896eefdc8ac6192fcf556e617. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEUD92361054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af82bc83a51e2158c206867eef97a3eedf7ac2f32bc157abf1a7cec5fe6df9a. 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/DEUD92361055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a126f0f0fdd571312c6c72d9075f0976ef5975a8fd7cab289d48681843152. 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/DEUD92361056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58b51d2ffae1450bbd74b20282bea34a40885af78860cb0e02440b03ed6ca64. 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/DEUD92361057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2673c7b50150743d6ee4b003ce3339e7c56cdc9d1c55935f8d11a48f4d6660c1. 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/DEUD92361058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde397cfaf2c10c28b42eb9a774163527d1f9fa88e36dde32bdfd58c0b55583. 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/DEUD92361059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb666038fcba87645d9a616700ba09c954e0e993536aaf8960192d2e1a510318f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEUD92361060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4487fdda057e6ef699d6176350c18f76aa87703f5b14fec7c97cac741a36a951. 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/DEUD92361061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a940d9a99a61212e2aa04f9aff0f339bbcdc87ee5269f71e170807a2651c87. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEUD92361062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec65a53279b335af415a3b31da2233bbefe58d19ee60badd5639b85b8d5032a. 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/DEUD92361063.
Backdrop for Cool Day Relaxation - Delightful Jazz Quintet
Serene Music for Easy Living Days - Jazz Quintet