Sessa may refer to: Places Sessa, Ticino, a municipality in Ticino, Switzerland Sessa, Angola, a town and commune in the province of Moxico Sessa Aurunca, a town in the province of Caserta, Campania,
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 0x775901a4e76d6103390d1f286968aa665288defa7d1c01a3e7b180af1bced677. 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/197348d4-b7e2-4bee-af9f-890ab3189b23.json and https://artists.proofprofile.net/proofs/artist/197348d4-b7e2-4bee-af9f-890ab3189b23.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 0xf4cf9e3489f02be779667561afd03787b6c905021bbd936ec30d69ffeddf8b0e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBKPL1950508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb205891d944bbead936ffdf71ecc881d5b9047f1fa2716b57002f84b798b5a6a. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/GBKPL1950509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c85395b00f879ef6a3f98360e48095af9de24e9dd66ec0967a6e1cf0c199859. 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/GBKPL1950511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859e96cde44a8a1c47e7137a7e4e587d5a9a42dd24182f0c3fbe5a4461ab0c87. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/GBKPL1950512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8200b169b99eded4ac347f255983ff2498e2bca4634ff8138f913d25ad3b2fef. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBKPL1950514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606273cc466d4e3e804caa31a5b3ac682dc388fdf3f00c7dda98eb6c448062d. 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/QMV8L2335601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2e2f759e640fdceda27324eb0ec44e81e758a0e98c949c9f49d4d864036d8c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMV8L2335602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff381b2abc55362341b8ae51e4425214e732f3f3b21af23641e270468521a56. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMV8L2335603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f162c94c091720ef1052e92c3753e3ddca23d66dbada3dda5afc0973b83cc3a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMV8L2335604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52042f9e80dd7c47e167941e5d0a03fc317fe08dfc3449b113e89880f21f00b1. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QMV8L2335605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad058178864b15701a2ab97aaabb9df1fa6a5fbff6bc4d06e00d49375d9eae4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMV8L2335607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22a333a95dc601a8cb1207ce21938cff2a04648a5a518fe82291f78ec0dfbe5. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QMV8L2437502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf94b3f61ae885c9692d2be966756377124304ea6a1bdbed79a47661df2f60a2. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QMV8L2437503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7be0b6b13472717407b0c9b7ca08d4d663e685c5aa1d9afb3a5f2b8a03745c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMV8L2437504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601e47593566cd454d259585149d1947dba4fd6f00d76aab906bec8b6a8aa4c. 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/GBEQT2100075.