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 0x28309a829ab32883cff99a128b06d7fac6e7d30a64b1c740b774e55a39d0b8dc. 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/76da36d4-319c-47ae-9edb-0572aa9011e4.json and https://artists.proofprofile.net/proofs/artist/76da36d4-319c-47ae-9edb-0572aa9011e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano for Relaxation, Vol. 2 (Gentle Ambient Piano Music for Relaxation, Meditation, Spa, Yoga, Baby Sleep Aid, Study, Prayer, Massage, Tai Chi, Lullabies)
New Zealand Forest Sounds for Relaxation
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 0x54d2df2fc486f04e197991d554be48d840c7c6ef5e4b8996ba37620c11dc94c8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4Q1813453.
Piano for Relaxation, Vol. 3 (Gentle Ambient Piano Music for Relaxation, Meditation, Spa, Yoga, Baby Sleep Aid, Study, Prayer, Massage, Tai Chi, Lullabies), Pt. 1
Piano for Relaxation, Vol. 3 (Gentle Ambient Piano Music for Relaxation, Meditation, Spa, Yoga, Baby Sleep Aid, Study, Prayer, Massage, Tai Chi, Lullabies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77338187c5b608ad3b407e872512af68fbd21ea52785a57d495a3c632d039872. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USCGJ2235458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424ae8ae26c383e66866b91b7e6fa787612e46fa3cdbd01a15030988122788d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGJ2235459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8862eba29cca8d28c6892be32924f3f7bdc0d4fa5ed029e26e1ffa867ddfcd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USCGJ2235460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e5d6a6492057a5d13301b3fa9d8c76ad94e0737e8ba526410a6acfac9698d0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ2235461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cfca0656c1018183c567d525c07be7c69fd0877d2b4a471dfff5c6cd7aed90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ2235462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77aba7f445cafddc85bf7aeefceb857a568a006e4f7dcdbc42b2a4463172742. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/USCGJ2235463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba993eb296c4376f21fc2dc208e591fd571007269c12fc84f0518146483934a0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USCGJ2235464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b296ca05bd0be218cbfa9ab9abd2998045c5d89434607da74d3bcde82dd3ce. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USCGJ2235465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c423dd114831316407618c3aa5a4e81391a40513e955a494ea96df32f15b6e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGJ2235466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a98457cb5ce500870fe8675b090221aa95d70e346df275e5a3de0bccc0d7a3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGJ2235467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc926cdda925734b93e87d263354cecb3b71d3cb5e0afd42347690c0eccf5e5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USCGJ2235468.
Sleep Sonata: Piano Music for Deep Slumber
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d73091d05ea18d01a82809289714b85c1b405235e6b06158e8ed600911ef1e. 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/GBRKQ2455686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e46431f962a10a4de26e7af521a54a5ad8a3a7ff76790f4cd35be7896b7d70. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBRKQ2455717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8673aea02eb45abd6cb165942c9fcc20f443e924b08149869b68ff1f1bee7ddb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBRKQ2455726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685efa3d0ccf377e55ef22bf25f5cadf61811e28c2fab623c8049aeb14f491c1. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEVU52587178.