Sidney Matthew Sweet (born October 6, 1964) is an American alternative rock/power pop singer-songwriter and musician who was part of the burgeoning music scene in Athens, Georgia, during the 1980s bef
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73521f1b679f791a0f5d3fed5ca365825691d40d3a1989806043975d16e12a17. 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/b8483916-4dc2-4cf5-a315-c9676fbc9a1b.json and https://artists.proofprofile.net/proofs/artist/b8483916-4dc2-4cf5-a315-c9676fbc9a1b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b12b4504be4300afac8a9b7d4a504fa2cf277755a74cefbf5d7c184df70de6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVR10300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f828dbb20262f27ad1f4abef3bbbe2c65564e2960d1791c1831e118aabb49a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USVR10300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8653f1b47859ee92782a2254bace9f02db3beda1e3996b8f87444a92ec2f47. 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/USVR10300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd503e19df933e996321981eb0dcfc2324b0419146f1d45647020e5ba719e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVR10300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b53affe455d46c776bf248b188f43c80c6c1a63a85e04854490a159df15b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df2a1079922dfd964210bea1a828efce7e2df3fec9a19d9b502bd71b104a33. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc157697b64c4b5857b77ddee25e086d689f2366d331f6590b0e30c8304bd6e86. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61482de7d7c8fe25ec2f5fb2d38e31dd4969d23d1f2344d9f6514b36e78015d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVR10300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f1ff7743c1bc01560df0adf57859de39c6c5328635bd4e2516e31fab9ded9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eadd239baa86a82f20eaa7ffa0728dfe9303892a20960444528f851b7ce3535. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVR10300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff1facd1484214862da372565d7830c75bb79609045e3a28e1948ae7558e30e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVR10300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb7b3ac5fb28e0c1e6ceae072df4ad3cd630cb4c9ed977b0c960074a77b3c84. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVR10300198.
Music From the Motion Picture "The Craft"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3f186147ddac69163d845d140ae1a0ccf14de99296b26178fe96035137de0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLIC0600834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50255a6c2373f2760976498b809549f9c9f67875bd5b64483282f95288adb078. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSM19913909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb4fcc9538f07037c11f7fedd54ce3d56956aa5c00e9ca5d1c08c03547ed99b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USF461200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28abf0cbc623a5bdd847f187d72d919cae2b4c3926dae19b10d80cfaf3bf9290. 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/CAN119700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a57213e41a5a7b9a84dcee66159f3a919fed1be42e4983ade7566598493ab2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6XS2001323.
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd663d3535f7b58601c8eb3c16ea05505b3e745a198801fafa1850626dd707af4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NL07C1700612.
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
Big Star Small World (Tribute to Big Star)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8886fcde0e910b3a78dee6c52ab42b33bf352ef060ba46a37f5e7ce05ed4c72. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USKO10600451.