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 0x61aea678ea9479238378e25eb45da86b525ed4dd1c4bc4c8dec189fd36033a7d. 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/fae8881d-2c32-4a80-a6a4-8dd2af85a089.json and https://artists.proofprofile.net/proofs/artist/fae8881d-2c32-4a80-a6a4-8dd2af85a089.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 0xcc0c0777349247ef5d028d146d72214b3314fb253c3df2e72933a20d323784c7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USDHM1606273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba259ff2ff460af5b9509448128041e2eb823d94c023638108d9725a35bfeb4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USDHM1606274.
A Beautiful Summer Night (Peaceful Zen Sleep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1531d66dd989f4432ee45f3cd31231d5163bebc0f3263ba88352a41be2b79df6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USDHM1606276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f16c4e1212124ba97063787371dac043e66d0d31d5732b34d0d756364f6b0e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USDHM1606278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345cc38fa4963a9c33a0b51568472de6c9f35762f16df83a9736b9967616930. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USDHM1606279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366affee60ef6389171d61c8632f512eea29f1d63d5b09f6065797ec2f57c40. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USDHM1606282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbb9fca4e502528eba7453f1e15c68a7fb4a0510d5c264508c8219eed720d08. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USDHM1606283.
A Walk Through the Zen Forest and Rain Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4de6c0cdef3a1ca08772ea6d2e47275705374155ae4c7a192e6f8afe86cd758. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USDHM1606285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccae6cb594f30fa701a888ba6027da4ab313f0841b0e90c0d983f1fe415d403. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDHM1606288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7daa96bf24dd3fc0c0e902cb064c4ca4f604ca7521400cc9cc50bcc8ab195f8. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USDHM1606289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bdf1b77fb567a68ec5625cb7d7195d59286fef06a917d53d339e1a434263d3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USDHM1606290.
Soft Reverse Piano and Rain Sounds (White Noise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c3c19d675c4d52a0989c19b12c342d4aba8b38e9e7fb61579d996de218def. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDHM1606291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8e5694bab4528826b7d38580b8ba0436b60936136da8a5901a8ed4c3ed5fb4. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USDHM1606294.
White Noise, Wind, Tranquil Space Music and Rain Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf969366466ba5785c76328a5d116f89cca06a1b88e6c8883af13af68c77b221. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/USDHM1606300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edd7fe981a9c6910372456d7dce3ec2d01a19fc28511db1e21f97acd8150c76. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USDHM1606303.
Ocean Waves for Deep Sleep: Binaural Sounds
Peaceful Lofi Sounds for a Restful Sleep