Tesa may refer to: Tesa SA, a Swiss company manufacturing precision measurement products Tesa SE, a German company manufacturing adhesive products Tésa, a village in Hungary Tesa Schwans, America
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 0x52896d4696aabd9ae042fc7fe80288975c314d06baf4a0985fa6c002ff5cc6d6. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d51edae-f856-4a7c-81c2-6452002ed640.json and https://artists.proofprofile.net/proofs/artist/0d51edae-f856-4a7c-81c2-6452002ed640.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 0xd36a61f554476f053f2fe86d6d3f7943da191fc2d85a8cbd434d69d70b48ee2c. 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/ES90S2202111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f57213928c32dc0711022f9c92b032f396d6ec0379e67e5433a8c564b1098. 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/ES90S2201924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d3a9f73c65b44db9d80c758e304c20f3b60a91e724e97780c63e45963b1e7e. 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/ES90S2201925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a670e1b4c9428edb6f0b8d426c644a97e5779d2537919c62a5620cf42ae0f. 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/ES90S2101755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa588b157b2dff5ef77e4fb30405699fd885ae11c54cd238879724ba05c2e7334. 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/ES90S2201900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cad114a3539b2ce5e1190b821157b4b03416783e8a589448e5cf9dbc6eb551. 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/ES90S2101726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d0881de7cf08fdeef314ff24c23439b9fb7662b858ae0c7f7ee070ac2fe7e. 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/ES11D1800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3185ddc5a7e64e5d48a0b9f0cc4493986fea8d74317a6f38788e97c6ff7c5998. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES11D1800193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ceef0b036e23bc15f9034970453b75f7561d4d4e29eb1497f28a314e56ebd. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ES11D1800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46929326156ba7d9e7882e55e9a6b841a46f978ce25642aa633d5eedb30d5610. 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/ES11D1800200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb09d7cca1d86157db2a0ff81b3af52b5529c428d975e2ce4db278b41333a171. 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/USCGH1745891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faaab58e661f2290ac174e800989a92762550134b5af2ac5f05116cb760d477. 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/USCGH1745892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7546d9704ea64fea6678aeacd57346df6d1409342b9ed506ab08d09e865fa4. 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/USCGH1745893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69474a59f3f46ea587cab17160934be797d5a092ec7c6e79fca97f41c43642a4. 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/USCGH1745896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa588b157b2dff5ef77e4fb30405699fd885ae11c54cd238879724ba05c2e7334. 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/ES90S2201900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb7eaee65b08e6c6ced1c080a678196a7938e3cbe15c462f19ec93f6d1cbbd. 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/QZB4J1866077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe82314f9d2ea1828c981cdbe03a2ea75507ea9fd4fd449542f789acc4d8e1f7. 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/ES90S2001175.