The Enza (; ) is a torrent in northern Italy, a right tributary of the river Po. Its source is at the Alpe di Succiso, in the northern Apennines (Tuscan-Emilian Apennines), at . The Enza is the curren
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 0x370ad6cc7ed683366af1962330cedf278c4e14669785a887276ba01ca5cfc95a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ac81dbd-d8d1-4931-abd8-1416a0a68723.json and https://artists.proofprofile.net/proofs/artist/4ac81dbd-d8d1-4931-abd8-1416a0a68723.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 0x520f32c7f1174ba9e6fdf8ae380bbe1cacc62bcace067d2ef7bd8ef36bb7ecdd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2230978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96cd2a12017ffecc986d54691c48462866735e001550b4184020afc01d68348. 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/US83Z2233237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2d31d4eb650acff645b872a959ee15b138c5336040dc86063307df0be499c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:58Z), 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/US83Z2240088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a2d31d4eb650acff645b872a959ee15b138c5336040dc86063307df0be499c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:08Z), 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/US83Z2240088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750446b90d7e32a330a9818d8b8552e430f15040240785617b2f59b976043632. 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/US83Z2240432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f6a348c82c118eef023b88b70fea2b1f19008349eaa60625ea78bb1deab316. 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/GB8KE2302995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b5dc42543ec9608fb611e305667e8ebb2a1d27beb2644559ea0c92ab74469. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:10Z), 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/GB8KE2303404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf24d405fc4aace1e8c1edf7b54cfab7774fd3521cf626b01ea4170396c284. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GB8KE2303326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd43eeae868a4e7e322545c7cd36e99ae9c30c4fdec47ce8ef6640cfa49b7e. 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/US83Z2310593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd43eeae868a4e7e322545c7cd36e99ae9c30c4fdec47ce8ef6640cfa49b7e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US83Z2310593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c92ab905ebfa785ad6bc28d4bfcb11471c308c0f7c3b57c4302734b6b14bafd. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/US83Z2314657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7424be5100e6cfe20c2044cece45c5e985a3f627c2b1cfa20f1340847dd2b3b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US83Z2314961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474922450e441a6880b9056a56beee0619b8487ea6d6d7d36c08b23460f29b2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US83Z2320262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474922450e441a6880b9056a56beee0619b8487ea6d6d7d36c08b23460f29b2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US83Z2320262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac076a68ae13002c23d4f8545eab0b3a4849011967852023cdc1e3618f55700. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US83Z2322816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac076a68ae13002c23d4f8545eab0b3a4849011967852023cdc1e3618f55700. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US83Z2322816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6594c200a1cf6d871563ddc0b29b76d4d1cf66ab765924b6732c4aac5aad5715. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/US83Z2325215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b06979d384ed06cae9c624f35f60445dd7e9bad18c770af7283cad28149c591. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8KE2315200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb1fdd86d777f9516021044cb6c4bb686ca45511dbc4fbcf5c4f9b521bbf1b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:13Z), 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/GB8KE2314154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aaa340a4253d13eea4cb7bdbff4fcfda98bf69c8d0353f56dacee616fb853f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:55Z), 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/GB8KE2316428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea49dbef8af38c90c8a57be577ba72698063db64614b21b2c3df9c81ac04fa08. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:16Z), 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/GB8KE2319100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e526b798c5a4c8e914c7f3c71ad14d618924a96096405dfb28782a9d858b282. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8KE2319959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90da440114ab25d0bf574527e5088f3200cf05fe50b48258b58af886ab6d7246. 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/GB8KE2320933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849045d2e00d8ba30160aa81e486564f40e5dbec33f077c446946669efabcaa2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GB8KE2324480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4091aec82c4dbe44d8a737262484a42e8f4b243f0ef7da8cc5db7d84d3ac5813. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB8KE2401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f99243eca4c8bac7a532fe180289ea4bdbda23cdc5c286689ab2422a1e4202. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GB8KE2402361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb105698747eff84eb7c0481c360ac95098ebb9857c66e19b06c218553ef6c31. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GB8KE2422285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23403a692cf95301067514179ba375201eed51e403a1e84b094066f36679b810. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB8KE2424082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd054899dfaf4f8d791290e30e03c4ce6dff1062d6d1d13c2d1a455c5659586aa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB8KE2424796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb518570c4ba9b89a6a8cc8c5958fce6a428fb86725ec2e2a6c81934d9aa8cb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:45Z), 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/GB8KE2428242.