Thomas Earl Petty (October 20, 1950October 2, 2017) was an American singer, songwriter, and guitarist. He was the leader and frontman of the rock bands Tom Petty and the Heartbreakers and Mudcrutch a
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 0x46f273a25af2d3dcc74ab2c4b7dbc3dc9bbf419a161e55f9add7b1f451d4bf20. 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/b25e2285-76be-433b-b182-28e1a9a180b9.json and https://artists.proofprofile.net/proofs/artist/b25e2285-76be-433b-b182-28e1a9a180b9.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 0xefdb1d845a1726acdbd11aa798a1a925a468d9bd27520b94eacabd6153aa036f. 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/USWB10603019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2102630ff1753b2bdd493ac89cb0158f4dff96ec0753e8bc011c20107860da. 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/USMC18925675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837b07b3e18086cab213ee39ae83fa3b189936055e3a6624b688ae1282426a73. 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/USMC18928464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab17bec6686d0fd46d6f9a4a17bec9b07c656367607e3fc7225d79845724ccb. 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/USMC18925674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c33a5f529cafbe9fdcdf585ba3015c5e555f811836b656fafe62878fd55f31. 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/USMC18925673.
Rock and Roll Hall of Fame Volume 8: 2004-2005
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967cd14a61be554985f79178859d121c41a4b3bb1610d13d3fea6125618b1bc. 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/USUPV1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c04e2d2d39056596e876ef55d43fcc38db69ebdffabc3c34efa979ac8eb5e5. 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/DEE861600676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c33a5f529cafbe9fdcdf585ba3015c5e555f811836b656fafe62878fd55f31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USMC18925673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9898e9fbb8ced185ddac5bf1ccd4654f4144e0a5eb63cb435ba35bbdd0e7f6e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USMC18925680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c33a5f529cafbe9fdcdf585ba3015c5e555f811836b656fafe62878fd55f31. 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/USMC18925673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47f3dc7b8063407b483db341a6670f3d4c20f8e431fb61a2d93bbc3f5dacb0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC11500151.
Eric Clapton & Friends: The Breeze - An Appreciation Of JJ Cale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100e46ae38fc61036eaf911dfe1afc53b1eafe26af57ab1a07aff5ee4d98ebd. 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/USSFR1423002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad5f3c11636b0b7e5d75dace78cd4abe53f4060e81d99b6f36ace8f9adfcd04. 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/USSFR1423008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68022412d8ee0d57412e7aeec598d18aec04145dc283e687f04f4ec25ec86800. 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/USSFR1423012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd84464c3479faca6b1ed1cd749cda9bded242d9b8ac6b3e910c98a7b420a141. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCN10200201.