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 0x88ae7fa53fbb292a4b4288515db6e29416c152835dc172da51a17c5fdb6822d6. 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/ffd05d30-0062-485a-a8cf-81df61d2a02b.json and https://artists.proofprofile.net/proofs/artist/ffd05d30-0062-485a-a8cf-81df61d2a02b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano and Ocean Waves: Relaxing Instrumental Music and Nature Sounds For Spa Music, Massage Music, Studying Music and Sleep Music
Piano and Ocean Waves: Relaxing Instrumental Music and Nature Sounds For Spa Music, Massage Music, Studying Music and Sleep Music, Vol. 2
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 0x6f9366e0d09d48395f5616efa30d4d0db893be336ff789c9494757bf21e47e47. 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/QZ5FN1996003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb247c1c5dc9bfd57dd96560fc06aaf08b46dc2c4553dd83ddf29d81855feecf6. 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/QZ5FN1996004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10e394e23bb5c0b093064076f0785e1cba0cdb4e986028a9294a3a4718e083. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZ5FN1996005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb973239b2b970dc454708bc5a778db8ee7b278325d1e22545c8d6416a14f3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ5FN1996006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d7d99847cb0fdf465eb31f31d22ce3c4cc1c6c0262137ba2991d8c1a19249e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ5FN1996007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f39bca00ab82ab90c26fd32bbd0e5d18f6710fb87b40982568fbeed4c47d64. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZ5FN1996008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe055ec8ff52c60298d4cdef8bc11f0e34dc2e22d82efea067186a864d30f2720. 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/QZ5FN1996009.
Calm Piano Sleeping Music and Ocean Waves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb515ba4102507b24b1944077d867d0559960b9b9ed5c93c246cbada4563379dd. 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/QZ5FN1996010.
Relaxing Sleeping Music with Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fcf9189c5f20133c3a2868eec3182f1512d8a9064f13d8ead87ea86b7fb8a2. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZ5FN1996011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d8f0e93c8b808ed3739778c2b88d6f715c117a5e2ab32b6fea95745a060c70. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZ5FN1996012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cb6e5abfe2dbc56bfab7569e5d27680fed44d6e513cca327ee0ed74e4bfecd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZ5FN1996014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce294d2b2e7fa486def5197e42936c41c6bea633282c75b8cbda52d608acac4. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZ5FN1996020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6665bbbe919ffb0c23840c1bf2d3618f56863412011964769af1105db0715f0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZ5FN1996022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff05ca8ad3b5af589c505f6b0357c3a4f8d509e3e674935ce06a9fbc277e2afa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZ5FN1996023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaf01f5d43d2518de3319d293fd87aa4e6bfbbf60a0ac2a7a33c49e2027bcd3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZ5FN1996031.
Ambient Piano Sleep Music with Acoustic Guitar
Anxiety Relief: Calm Nature Stress Relief, Goodbye Anxiety