Chula may refer to: Thailand Chulalongkorn (Rama V, 1853–1910), Siamese King Chula Chakrabongse (1908–1963), Siamese Prince Chulalongkorn University, Bangkok, Thailand Maha Chulalongkorn ("Grea
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 0x8544b0ef99625a6332c384ce4d0b0d5310c9079bdda97dc18870729ab5d9b8ac. 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/62a166b6-28a4-436c-81b8-461e61c8ef6b.json and https://artists.proofprofile.net/proofs/artist/62a166b6-28a4-436c-81b8-461e61c8ef6b.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 0xc78b13bfa965f159ef0f0f07dd739c6f850840ca7ee18b0adfb0e95df86734d3. 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/TCJPK2061482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df08338cb4daa40e3d54c4a53d8397231cbe5b0fd277c3286ee2861c307077. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPK2061476.
しゃなりら -五星ノ華 ゴセイノハナ-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d9b5b1b811e5a006f086eeffced3d18cce90b9c4c2a96ed6a8e0ab26a9e62. 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/TCJPK2061473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466bcbef9e58bfc0cffd09431196f354a9dda9a3803cd293f3a1654410965c4b. 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/TCJPK2061474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ce5a4eddac01486bd0ca97862bc4f19a61882c766486b82ddc704c9a92c9c3. 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/TCJPL2052403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74543a3e4a6f8054561152842451809db7e121720865ccdccedad2916d25192d. 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/TCJPL2052418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9adc5fdfc6b597ef125397ee32cba348350af544b08804142902e04dc72082. 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/TCJPL2052432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74543a3e4a6f8054561152842451809db7e121720865ccdccedad2916d25192d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPL2052418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1945d63ecb6cf32b000d93a4ba0e2a9239bbbccaf9e2bfb21150a60b4f111ea. 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/TCJPM2087030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a853a025e684df618fce7d6fdc0544afdcdbf273bc90a6750df1478e52ded6c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPTK02102850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e32b7668016cf8a8c160f3f2592ac77e39307deee354556a479f78be37997f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/JPTK02106020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eba896ad4547ae3c23cddd8b303782be2a41e37afabe1897eb59ffedfabba80. 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/JPTK02205500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb694037afdf2fda0b705e0c5a15dea1396d4e7ee2afd4a3496d3de8fd1bf0922. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPTK02208070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e47a153afb93853544313e792e4e3c0fb944bc10086b3a20d4cf4ff352445e. 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/JPTK02208110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d56d905b21ad60a2d86ce578cb752b7ea756d0824bfe0437b9d47954d3d478. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/JPTK02303640.