Tobi may refer to: Palau Tobi (island), island in the Palauan state of Hatohobei Tobian language, the language of Tobi Hatohobei, an island and the southernmost of Palau's sixteen states Media
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 0xf2d5c159ee1d8adf438dbdce35127c1817134584f06c1bb2c2f6979e31f0bd73. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6c41da0-a5e8-4fcd-9ece-04b4ae786725.json and https://artists.proofprofile.net/proofs/artist/b6c41da0-a5e8-4fcd-9ece-04b4ae786725.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 0x6ac8156ba888339809f0ee2fce5ec8c61235b31f56d26a34f24b9d85b3b93ef6. 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/QZGLS2071943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597971d0daf04086729fa1c3014c3a8d5b9017648baffa2d1700dcc43a5664b4. 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/QZNJW2112581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573a732e164e498d5730b70596f44f16efa37296e55ee26e2b138a7e7959bae9. 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/QZNJW2112582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d4a9f5d7cac07b5b47ecef47dac6310ddbf0548343944538d2ca14ccc85ff0. 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/QZNJW2112583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd93b532082aad071adbe71c8a0eea3fab66bd0f837f328548f080b21fe8b2. 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/QZHZ52184180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfec8df510c0bbfa54afeb48a1bb82ed644dcda2be8b205a285f4ea4751de4d2. 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/QZNJW2112584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a6cf7ab120e45145ffaa3ed16288f7642d4986e4ec205997c237dcf9fe362f. 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/QZNJW2112589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a41b33ea0e86c64ca4c0f6f17f40148ce8e9a2da71cc72768ea74aa386dda. 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/QZNJV2101742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72115df405dd4e87b14ecf6479086b5a6a22f81912d52984e3c3892811d7272d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJW2112592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f871e0a35e9bac5d5878cea153fc03b36cf6a060879c59e9f8272749b431076. 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/QZNJV2377376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec9353820c06babcd2ec7e37a9a01871d92ae18ae1a4f3f557a84a714f686e. 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/QZW9L2286076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd93b532082aad071adbe71c8a0eea3fab66bd0f837f328548f080b21fe8b2. 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/QZHZ52184180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d0dcc90c4e907c8347dd2b6ee5905dcecdcb742a4110edc360a62ccae55bd7. 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/AR7M61900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0302ee06d030959cee9a65f571b545ac002345d9325dea2131badf14b4f5878. 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/AR7M71900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f3e5851c2643479f0bd21f5efe5b0b36949f06158cc2c47f34f70bbc68d98a. 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/AR7M61900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e3cc48bbf9b7ae34eac08b95c3bad72547c841fac74d83af2787eeb8badd58. 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/AR7M61900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc07e75578a066af0d910b243dff0461fc73266a68bdc92e9d33be019772b03f. 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/AR7M61900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ed04fbfc275795ff4f9f31e0e0a8e3d0dfc819301dbeead75e3e2ef61c43a8. 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/AR7M61900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4fce2225dfdcebfe9e13d7ab5e7d88d6b7a3d0efa774ab13fca8f3406711ce. 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/AR7M61900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8208f596b8811beb7d38b5b5c3966bcd04a5e15245a370242d30e89cb23763. 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/QZDA41999755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01ca338bd87c8c4336bb62b3a9bef244021bebd6b6e9d7911878a9e38032cd8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ART0G1800427.