Saverne (, ; Alsatian: ; ) is a commune in the Bas-Rhin department in Grand Est in north-eastern France. It is situated on the Rhine-Marne canal at the foot of a pass over the Vosges Mountains, and
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 0xaf25c837d8fb2927eb4d213b7f331d8fd9993da6f4631b818ccbbb606143e166. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3881640-2d76-4501-8ca6-0b37503a283c.json and https://artists.proofprofile.net/proofs/artist/e3881640-2d76-4501-8ca6-0b37503a283c.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 0x1bafd78423b41fa4dd760668f88121d9482b670266c3eb20b19e5fb81bc317d5. 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/HUB891606111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3cc0b9efd24cf43385fc1981a5ead30148c5b465c2a7c89733620e95ea652c. 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/HUB891606114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb430e8a076e449ceafd97e9f1069a4599cfb230623062502e919d46f9002f6. 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/HUB891606116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbe1fba8c7927e3e70761d7602d7f74cc23ec83da4fa20560f07020aef427b6. 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/HUB891606118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af057da923a19d29993620a949db46d1f822874519c3b6694a5f5e6e1d44eb1. 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/HUB891606119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336f2438202a80c4a89a30c9547c3709e5579ce11d116a177fd48c69741686a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/HUB891606112.
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 0xfa95daa2b4c18511f94011e2506b45209537e5cfbf188db01be0aa1dd264790e. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/HUB891606115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cec1e82acb0d0c5074a45ae29b678607f6b3c3b5cdb9b8b0c5a31052269bb5. 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/HUB891606117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e82368063135e36559019cd2411f39e000d8740de759c8df1e0e6720a39867. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUB881800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f68d401af88b5a38f644238636c9b765b834c9426d199a3dd2ca5620085603. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUB881800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1ff7cf03d7b81dbcc99b53e5d1a21bb772fe6827cd932409c39d0fd17a0355. 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/HUB881300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b6a9e044fc545bb1c5c107f09560359d18bc4b3d21accc30a8f8a630e2799f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUB881300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c788dfd7504083d779409b89b211dc0921b2da77b9fe419068da98d019ed67. 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/HUB881400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33579cfa80578bc42bd603061aaf3b05a943ff284f3c46a47fa773f7b1761f1c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUB881300101.