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 0xb0d74688dfd3c20c3f063bce04580e321c97f8e16115961edd055c6f5797faa6. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/729a0a39-d187-49a0-8661-7a57af454b3c.json and https://artists.proofprofile.net/proofs/artist/729a0a39-d187-49a0-8661-7a57af454b3c.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 0x67056b062149534f8f01e5a40c1819418464ac8b830c65cc3d6bd4c456820b45. 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/QZNW72330353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4448012fb82c63c3adc7cfcbbff15f45642f85dd675d4df594f46f521b6ea7. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZNW72328514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b8ecbac21ffc7bf041c314e0722a95e136f78af8c920e00621f28891fc526. 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/QZNW72348131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305dc54f43fd84b55e8d8efc6811490272d0d57a6bb08c40cb28bbb20a569b9f. 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/QZNW72347897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07226792e8c7a9fb704748baf37853645900099ba21610ab972f27c112fd40b0. 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/QZNW72393510.
When the Night Comes (Soothing Sleeping Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d84d44ca9ad358a38d9f449c02dd0b8b4ab1324fa19ebd530e33d943c95a78. 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/QZNW72392965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50986ee0222df017dde253e32d3a2a20ac67b1cf735df154d1c1c2a7b41096d7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZNW72219677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50c2d5b85c98cde905e4ce854b15ca46e61cbdb18e5e46c5095240b9f86785. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZNW72202141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ad28f448642823a81b12e8bfc1b9f7d4674e2b8ca342e23295003779c6c3c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNW72202145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f2d7bdd95b67d04aecdc8663e981c3cfec1e1bc0b5e1f99c84cadb903e28a. 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/QZNW72203208.
Graceful Piano Music for Meditation and Relaxation
Beautiful Piano Music for Stress Reduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6c41fa179da8b5b4329d7407653eba343e5c672c9e5eeeed4817422b2949a2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZNW72239445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b154c9607cca87e437e036fc0d258025d6ba51b6664dd120e558d219faa70e4. 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/QZNW72239447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18712b27601d64b9f863adfa63e16d7723bd652fdf1b7199a8d02b377e24eb20. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZNW72239448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49efab0c151d412de37aed89405b29e9bef1b61c6375b43c576cbbfd72be7500. 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/QZNW72239449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaccf09c1dd4dd4a78dbc0d0ca17ab8801d63c32a68094cf2e036b9e3c7d4d2a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZNW72239450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c5c6bc66258b7445c31c6c23a733ee4de8e48e91e81a25096e6b753dc4e0e. 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/QZNW72239451.