Takako is a feminine Japanese given name. Written forms 江子, "estuary/inlet, child" 孝子, "filial piety/serve parents, child" 高子, "tall/expensive, child" 崇子, "adore/rever, child" 隆子, "prosper, child"
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 0x9ee98c12811583638a060260c51be4e8d51ea63f1cbbc51bf173b3f4d20c9689. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdfb7356-ae40-4c00-86b0-659486dac71c.json and https://artists.proofprofile.net/proofs/artist/cdfb7356-ae40-4c00-86b0-659486dac71c.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 0x5d22af0a388b356f20496a9acd1c618fcec090e9ed57eea86ae5e1ff8bfc489b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPW462451396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ceb03a4bbb4e1da0313b4644a8d5a653d6a8ecffcaa4f922caed9c48f9d32. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPW462451397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038dc40820aebc76fab604a3fe57bc257da97e9140c256848a19077d52fa040a. 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/JPW462451398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ca536e3d43b04133a891cbec68938507af579642903ecca6189930f9c0020a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462451399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9ecff8edf5eee9226e197bae1ea3e8937995500a17659d989985281652391. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPW462451400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6061582ab5e54f115b1b89bbd4380e48009426bf6350c8b13cc8e98af0c29909. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPW462451401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7453fdba75a5260318297b78e2031a96e1c3e31e9ae88f7c3be0263355be1c48. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPW462458627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ce3cdab66ba313bf22498d2d799d6f97cc29caccc8677e15e129046c3bf5c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPW462458628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6877b1fe4ec9e33e57719e01f9cc89dbf5454c76150bced5f3f35de8084c0924. 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/JPW462458629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d86ef0e7361d716d77b087cfe2359c785438a985cd2512740e105c1927a0fb0. 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/JPW462458630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfd962f13cb690e80ce660db707e49386efcfdea3cb478b930280c95c5fbc34. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPW462458631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f32fae47da72877582d257d10c9362baf635cee01a30ade92d05e2c2b64eca. 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/JPW462477546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92adcf4b36f31edcb621d497cecaaedb25c94202ac2be46fba86321c062e6ed. 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/JPW462477547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b708035efaee1525f0dbb598c9bf1d8e729fbd7a4ce40f0a918698d553fe47. 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/JPW462477548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b14719688a935bcd3567f4329b169b66231a8575915ba24be58ff0e355dcecb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPW462477549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9a329267262b0b1fa60685ba4470b8c7dc367c2af8e90bd4982158625f880. 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/JPW462477550.