Sethu may refer to: People Sethu (actor), Indian film actor and producer Sethu (writer) (born 1942), Indian writer Sethu (singer), Italian singer and rapper Sethu Eyyal, Indian film director Se
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 0x0efc66ec057e741dfbfd39c117343265c7a7a80ad96733b85d27681a6dfbd330. 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/3e7bedc9-f96b-4706-817d-15d55e3e518b.json and https://artists.proofprofile.net/proofs/artist/3e7bedc9-f96b-4706-817d-15d55e3e518b.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 0x69376c222d0ab389999edc887fe3c1169c3c0919997087dae4d1f4473f818f1c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:03:40Z), 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/TCADY1862286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa558873f921458a62e8a95410f674ebada824868d52db4091e86f6ed0fa756b3. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/TCAEF1972576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d118e135981dc1b8696afd730932cded9f58e116e776e163affb54918ef5f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:19:00Z), 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/TCAEH1993299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b7db0b378dc60912641936fa91133be09954dbef24d5efcfb815e1bed73b2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHNA1968646.
Mi hai lasciato a metà strada, sulla strada di casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97a5b80bbcadd54d1fd72e845bc5cdabb66b7be8c6a7beeeb8712cec12b853f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ITUM72000732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea00bef263b23e2d80a79692dbcfd4b5afdfd1a3721932d4316569f7cd7648cb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITUM72001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e586529e270ed1f36b52c1023cd52799cd5fa39239a57f94585f3539ebe1a. 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/ITUD52100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd209efbc4939dc59603bef67c7b3645d9a505a0596c6231e4e4e0655b6b3923. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITB262201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d13ff69b2a818d9175ee8c2016c843b82469d609b885764d7e497e3040e84df. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITB262201820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b13516c57c837f00ff6497b235509133c24403907b76d43fcbc94f55a936b. 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/ITB262300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd209efbc4939dc59603bef67c7b3645d9a505a0596c6231e4e4e0655b6b3923. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ITB262201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d13ff69b2a818d9175ee8c2016c843b82469d609b885764d7e497e3040e84df. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITB262201820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029e6946bc4dd2c366d2f228518b43f88726a8fd8c54b7a36ce66e8974bca43f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITB262302660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc2ee32ac3b701172467871b1368356a5a4b407f37eaf216b48c5b23e02a71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITB262400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406310686ea677f10917eb38a4929239e28811816c4b258742fdf6bfb8eecf2c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITB262400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cbad49fe349a8b51bc91d882bfce82a6eb9be96701f21a155d38ea1e348b41. 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/ITB262400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d8656ed1c144f893b34d963dec37ed375c1bd15080f89c62e98eae30e7d8ff. 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/ITB262400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f412af8713c2e870013ab00594494a06e54f492f75f30c64a8758bbd989486. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITB262400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5defaee405d8237629774b47c41b5772184b53843d950be9d92e9a43ca4a97a8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/ITB262400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc1759e652fa443815f7d85ac72eb637ae6a76afb2661365f0760f7aff3b23. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITB262400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ed6843486fa2dd26ae5673bef825aee5809035ac2bd1d7c05b9a783f5d6a06. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITB262400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c95110c6cdf23115f8303dfb03eba0ab32ea7b58dc1a51465ad5b8f4d8d4d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITB262303800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415e4f7cecce4949f7afff2513c80a9c1900a3b58f06d60b0f4c8ac7fee4d656. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITB262400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4545d94685251b9d1a4561619d611ca0d79d7eb104918855f16c602560b08510. 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/ITQ002400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf096b0e0b6f249ec96ae1c531ce2476b6c0539af7bef90f3ae789bee0f888. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4TX2287065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe90098b03a53c71d50a14abfaae718e46973e1b965c39c763136246cafdda41. 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/US38Y2434764.