Sam Williams may refer to: Sports American football Sam Williams (defensive back) (born 1952), American football player Sam Williams (defensive lineman) (1931–2013), American professional football
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 0x90a3f2a4e792d2479cb3a6e7a18f73c935f62bdd4f6584efd190e8b82a551e5c. 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/ef28343c-16ec-4b22-baf5-3e69073d9ca6.json and https://artists.proofprofile.net/proofs/artist/ef28343c-16ec-4b22-baf5-3e69073d9ca6.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 0x900a3018383a02afd725f190e4c76cbd6663fd4e3f02717ad01f04abe7ee4b38. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCADQ1871863.
The World: Alone (Acoustic) - Beechwood Hall Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93886ddf823c41468843cf8cd153a498d2e99cb51e4fa4585a2f8400ac4417fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72109780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8272d08d5ccf58e9731a7b2573d2cfcbb6caaf4d0d5cfb159c1b802eb80ea057. 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/USUM72109776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49db2619a31e7619b05e43b6b1e8b590b3872544e21615220c2e931807282f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USUM72109777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93886ddf823c41468843cf8cd153a498d2e99cb51e4fa4585a2f8400ac4417fc. 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/USUM72109780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90b2d1365596458ab81b839d5b66a1c0ddac5f0931c9a40dfe7f03a70583cf5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USUM72119047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc7e198217340ab525085111e333a7915a0e346b65ac64c198d36e50d80121. 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/USUM72215027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bd95e5746e616d09454fbcef723a3aa7fc4c24e7b3713c8c0659b1e11dd5cb. 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/USUM72215028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc7e198217340ab525085111e333a7915a0e346b65ac64c198d36e50d80121. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USUM72215027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ba8f3b30dd077f0cff092db808140a789437195c3e359dda99edfb3d49640c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUM72216680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe119274f62afe794bb4dbb660d84cfc9f1823dcd6b65b5b1f80847a39dbabd3d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USUM72302232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6100b7de1fbdb54557b0c2e6493dcbe9eecad66340f385084a3639ecf83d4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USUM72313048.
Carnival Heart (from Cirque du Soleil Songblazers)
Carnival Heart - from Cirque du Soleil Songblazers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1750b5f17e4182d5e7ba1caaa8e7a76dc8ba851e4f873cd402a7afc0cd991529. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USUM72403539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9da41bfd38adf639a3253da2de6c41153a43bbde4c653723ea4a8d03a593b9. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USUM72402074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268fe688aae44d9afa60559b17ad36d9df768120e1bffd0cf6e0243c5ee1ed92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUM72405518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdffcc8a10913ac0a67ae7a11fc33cc4395abf94f4fda4634a51761fa2c4145. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USUM72405519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806d11b4bd8a121b7370a2ad41da0fc510036a2403483489d8f85c2e260531cc. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USUM72400149.