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 0xeac9e60b6db1d80b4e714f5bbd7880199d947b492357915a03202f3b68e25508. 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/3f8ffcef-18dd-474d-9bac-6aef7497d338.json and https://artists.proofprofile.net/proofs/artist/3f8ffcef-18dd-474d-9bac-6aef7497d338.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musica Para Leer y Estudiar (musica de piano relajante , musica para concentrarse)
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 0xb796c4ab6c18ba4db261f7e4c0b79ef3fc9c324e16c3cf3ff3456a0976209550. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/ITS781701350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1debe5380cc5d03a2c25243f078f9bb383bbf38a46249af5314e6ff3c54cab. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ITS781800418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5b0899e4a165b60dcdac409eb47d112c2374e1285875bbfa610d98426814b. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/ITS781901032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70253c71c5c8f17d071a4641ee7856cb549b097aa3d5047ef5c45b26ee939a67. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ITS781800244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8a4198525b9a1ab8dfc0f0accab906da1d78c72f11a5d05a371eb014e420db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITS781800708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf60872bd49f75280145bc7e5642ca4cd340fe48b625a5ddd8435f4dc01e8f2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITS782200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fde292e870d0c4381b5bd833272f91d55478efc6128baf0cb4bc20ec86e8bd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ITS782400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45589f7da737a3ca871a10fdc1ed3eeaf12ca5e989e5d8c1647967df3ef538c8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/ITS782400935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5913c42500ece7c14930998071b4beb09b18773c86a705ffb0397d11430de16. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/ITS782500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0573e7229ca8bde756715ca2492aff5938caa2bd53fdbf4f9babdc56fa6e0851. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITS782500323.
Sunrise Over Endless Skies (Morning Dew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1da3300614abbb332a91143f9dc87f8f281ed5337bf91eb66c244f59c2419ff. 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/ITS781800916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679f7b75c9df7e924f6104c40b4643082316489725cfe06abad7b25a72ece620. 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/ITS782000030.
Study - Focus - Concentration - Best Music for Brain Power (Intense Studying, Study for Exam, No Stress, Memory, Relaxation, Deep Focus, Music for Maximum Concentration, Music for Office, Hom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72762b6e31b0ffad27d2cb4c6ddfaf36eafbc3e0961a0a1c631a91d3e1c80227. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ITS781604599.
Sleep Peacefully Vol.2 : Contemporary Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fab81e32c74edc49e09b6858f3df2589f26ab21aa77c6c1c982202ba215c34. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITS781800618.
Sleep Peacefully Vol.4 : Modern Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5b0899e4a165b60dcdac409eb47d112c2374e1285875bbfa610d98426814b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ITS781901032.
Sleep Peacefully : Contemporary Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70253c71c5c8f17d071a4641ee7856cb549b097aa3d5047ef5c45b26ee939a67. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ITS781800244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b19b8ddf35cccbcbe481b1ce78deabc6af9bdda55e062a8b3d552ade6f31ff. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITS781800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c63c2e8ec7dfdf6aaa7af7718695ae912227d6a99088a504e34f810f29917a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ITS782000065.