right|thumb|Acqua alta floods in Piazza San Marco, November, 2004. The increasing frequency of this type of event caused considerable damage and prompted projects such as MOSE. MOSE () is a project i
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 0x9ade520e9e2c8be769d16115c16fbc4b214135a0f9e628ca45e9cefda322a406. 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/db48bf5d-4413-4474-8b04-477d440947ea.json and https://artists.proofprofile.net/proofs/artist/db48bf5d-4413-4474-8b04-477d440947ea.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 0x445968f6568b1c9bf0d3904e6b03a6f1bd48967c40ff33951538c9613de186e0. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ITT7Q1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12805d741dc84c80827c6078aa32d86db14e9d0e3cb8d866df78169814d3faa2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ITT7Q1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb96a111cce325c7129f1d17610411006b928ad7e6a9b9eb98c30e31ea88ada0. 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/ITT7Q1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d4de9c7684b5e35824766e6b7c8ebb793fdaef440612ac0f5e43c0c391f074. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITSXH1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd50c0a541f915e7c18973c452a1f0c01c2ba1b556eab7b7ec84aadc3a18cc1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ITSXH2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c30d1db47dd01fb961de130a8cb387f6689ae163b48701144e42ddff6ba9b9a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITSXH2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c2e57a81339e58c5c543d3c82a3aa8fba0a1808615a270ba7b65e52b35059. 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/ITSXH2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855562b7762882780250623bdb65f74bed94889d6e1d7941adc27076a68ffa02. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITSXH2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e84ee3ccd61573dcfc7f14413efb8e4e00bd149a1062cdde4fe4a70891ab1f0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ITSXH2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b46c6b9b359dbd3c326dbf0a77d6bfc3b731d026020371fb0a2316a3921ba1e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:01Z), 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/ITV0G2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0364c321106823c1adf061c0747f35dbffdd6e320d2bf1ba08b4edbffaf4fc. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:53:03Z), 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/ZZOPM2229067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ac22fa56e4cbcf900a97ee440866355d7dd4469a0152a6bd608501b285073. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:36:05Z), 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/ZZOPM2231543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a8e11e5540c965cc5fc5a126305698c828f50b7c9e633284a2ec87050bf37f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZZOPM2236098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c47b2ef84fc66add0a1429a418f288a21220b3d1a96e6732b665457f5eb943. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US39N2203782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e675ff5278874c33314d9545d07bea000375bc6727ad08d6d0918f2e653156. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:41Z), 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/US39N2306004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1344f0657d1b235d5ab5eb1d00e63a4fb7d753293b7a0cbbef527905dc7e59. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/US38Y2405857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bb281554325fa26acf8da42c24b3718f2b3d1516787758702410cd5cac3687. 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/US38Y2411667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0c158b1f0db6e3aa78dfea22e2c59a48c63285f9f7f2d573214ba511e6fa7e. 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/US38Y2414815.