thumb|Monroe recorded the first version of the song with his orchestra in May 1954. "Mr. Sandman" (or "Mister Sandman") is a popular song written by Pat Ballard and published in 1954. It was first rec
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 0x1dad7f5f3bc9f4140b80baa3ee9b51ad0824f3173ab1f1cc394d9f1fca0c4bb2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a443492-155b-415e-a51a-3b17b70f0ad6.json and https://artists.proofprofile.net/proofs/artist/9a443492-155b-415e-a51a-3b17b70f0ad6.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 0x4ae504d471cd1a21f54a958cbf892ff26f0d0b9d1c2f5f5f318e7ae9c5f91fa1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USUYG1054910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810d090a437325c898cf58a58937296d24d1125636b897d779681d990c73b7c. 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/USA2P0749994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8be9b63ee9df430dcca53402de244e54a40be137b1033ffe8e06db459dfb4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2P0750002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72241a87d4b2e20371131881d01b0cd4a5d307375157389e46791748f0bf370a. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USA2P0750021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc461e5bb6fa8176871b58f1d8093922a9bfe02953f6e9e1a45d64f2ae1f00615. 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/USA2P0750022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096527333ded064ea043d9e95b1e29e06b9db76139bb70e7f0c20484a02ea523. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA2P0750023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e044b1bd556c8ae8b5a8fc5da8a76d1ae8adae607210d72861e338ed377f99. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USA2P0750024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e57a1b33e5d33be6d689d879ef8a2d15d9d1440768755583bc9314712cdc456. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USA2P0750025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5537d14a1a8108207c558f8db3506112e3daa82c61d87ff8096180d273b8ddf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USA2P0750026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b353e29ef0a149d1ec205962833d3f8a85d891b0e9d4e2347f804129140d694. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P0750027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e2d92548397eceda2fce0fac8db15c29efa2f562015db3e6e397e90436890f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USA2P0750028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa3a0e81882a104633e92db63a18ed7b815060d6ce2c1ff822c741b5c98c09. 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/USA2P0750030.
Big Dog (feat. Lee Majors & P.Ocean) - Single
Rydah J. Klyde Presents: Thunder Knock, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459e1054fd057177cdc59139a3d4a5366f95efdec622efbf3d6d29995c2e1ce8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USBAE1308116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe587297481966ea0bcbf20dbbf3980a6a4005a32e255f668d51d3b6b7f8d2f40. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USQY50948441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052a55390cb73ff275c48a27ce93d25efa71264ffa75b8efeb46db90273de175. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USQY50948433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358ca629f8b38a7eff3521a5d3569da0ee98335f0a6f0d1bc1ff57f60690ef6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USQY51036781.
Bubble On (feat. Baby Bash, Paula DeAnda, Angel Deezky & Jay Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cb2393c3bf4ed85d1a92e542d02ab2a826071a5134ddc0c9dbb27d85611f40. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1410656.
Mob Figaz Rydah J Klyde Presents: 90% Street 10% Rap