The Marsi were an Italic people of ancient Italy, whose chief centre was Marruvium, on the eastern shore of Lake Fucinus (which was drained in the time of Claudius). The area in which they lived is no
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 0xc28d61ab119e94fcb4de14f26e0205c4ed7ed994664b972900f2af0da8c22a6e. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7f908bc-3770-4e32-aea4-c4d8a90f14f0.json and https://artists.proofprofile.net/proofs/artist/b7f908bc-3770-4e32-aea4-c4d8a90f14f0.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 0xb4d537b4d8d819bcb70343ab6544bb394befec847bab83bc7b3d99c783cc891c. 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/QZMHL2384119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7e5adab10829984ff5bdd85da50612e88eaee9fcccfeaf0aed28aa0f12d17. 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/QM42K2363371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206c46ba3a4898e70d291c34139188bfe52c3e2ac158f130c527f9b09759a8b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZS632362452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a9683fd9a77bb45bc14f80aa63c60fdca066f746c5a279cec82ad28bf1b3b3. 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/QZS662278028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00757d11f5402b791580de2ff86da5fca5ca6b85b38af13c71816300d70fca6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS652284942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213cdcb6c4abeb7a0fd94ef8f1e00a597172e0333de6ea42eeb21fa8489efc0e. 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/QZS662237316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe24573ce3c3b518f9c552a90d43b411184ac0e5947d5039365f9b11f48f971. 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/QZS642226293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb89d6f46b04e591e3bf6e1770f8a62a6b69a6e46b8fc2d265e98cf631451587. 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/GBRKQ2222221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ea674408c9b83919d5372385e51df00eb64721fe4100f4682dea3ab16c4b76. 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/GBRKQ2222222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505dacb7ff2829e6d0f180746f3360d02f86b6113ba45f6ca2a710dce2783c2b. 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/GBRKQ2222223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d7bff7d7bc641c9f564d0e44675831c9ead8f043709385e978030009a8ec36. 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/GBRKQ2222224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce433ac4655ca1bb5f3b0bf216049749e1d2b36a3b5e336a191ac600c2f866b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEAR41513858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a659a725210c53e30299756f34673e4055ce0ae9b19979cbe6ea7f01ff5ed. 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/GBWUL2101675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883e4540dedbc79e8dc129b90f26a06e8929e9005ea0d679189a8c5a70b785e9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBWUL2101678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc5d15ae7d88bc3b1f0410ee6afd87e64ce93c4c434c5bd7dd921f7af9426dd. 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/GBWUL2101680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181232f1b8bcfe9bde9241652b0b6dd0b1223ff8a385184f03c6a40348542a05. 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/GBWUL2101683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7434ea8f6290706bbe6c8e9e60e2025a1e766993a7424446a721d7d2674b6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBWUL2101684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26d0aca07bbcfaf23b6a743916fdf3412815f76fe8360a97019695124856b6f. 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/QZMHP2320812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39483dc2f3e55accbcc8032dce329096a5d1c8c185380e27a7eb15783e737d1c. 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/QZMHM2247712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2360f9714c82ba71c4d3bea10a2f0f7677ab1da7111ef615ef6527396b09e521. 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/QZ5FN2042009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0bbc27c4558394cfedfd43b5c0a583dbe724f368403622f7cf123c1e1adc5c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEH741512695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cfac446297c68a6f336d99bc357bbdf260bb0cc2038c3c6558d1e06c448986. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US83Z1814429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2c02795d5226bffb5078f3eca7d3731f9012df5bea40424e16488f50b9270. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAR41611959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ba605b7e16a936edcd008db44a838046f361fdb61f1ad4a5627b632400bd3f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEAR41611963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606ed528f175ad725566a944d73a0c43ae93803b43f071ecb9b6cb7dcc4e0664. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBKQU1543201.
The Best Tracks in 2015 Year on Oxytech Records
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