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 0x9bce8a96b6683defe66daebc14c8428e92e591eb4b6424df5a6e28db2266c089. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81e03519-57b5-4ec5-b831-bd2a99b34ecf.json and https://artists.proofprofile.net/proofs/artist/81e03519-57b5-4ec5-b831-bd2a99b34ecf.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 0x99d2bc050116d0099ede57472571d8336bca7e2e2cda517c89197cd37962c440. 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/JPPO01511950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cffe52d20cde3bcf57115ffea1251ff07ca65ca71af1ff2e301e0cb6b0934d3. 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/JPPO01511941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c77359da085c0884189d55370d15ac5abe73b6973683fe848cae76481fbb34. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPPO01511944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf7f4c906936e02fb371c85c60b11b9b44c58e4bbc5fa0e01e9eda5fc0585b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPPO01511942.
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 0x62e69c46b300e80e0bfa6c65d21a3a5b4b5d462a51c6a751315024d631927111. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/JPPO01511943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f47470b342dcdee09afb60120673cb274eef0d9661e2883752a2f0862208d0b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPPO01511945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed9e16641b791e7eddcf5538e2a139ba0e1b51175cf88406b80d4065863b122. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPPO01511946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8005d3201f9736f4bb671c601e2ee503979b6ff528fe4bf05bf0522bda7ad56e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPPO01511947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8876f99749fa9ff4face1c9409458244d2698b0708efa2aff817eeca3aec88. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JPPO01511948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16862de675f2ee007ebdccd86c7d3f5c8b90b7ee3db40d25915272b7735ed59c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPO00257300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0208a2d11120f7cad3325e16517fcde475f8bc1175432a9215b3de619fc18a00. 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/JPPO00257310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ce169ae5c700aa14bd38e462c6ae42bc584ab1b13755dfc710ed9f377464a0. 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/JPPO00257370.
星空のバラード - 2001. 08. 29 SHINJUKU STUDIO JAM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b7bfb4736741d2c6fe79a980139bc8082a267cd68f0bd9ae1999520ac865a3. 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/JPPO00257380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4571293d37fd504f5b4d1955d748632da3ee5054c43b4a3b7d72210096d990. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPPO00257320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8524c65932959a1bdfa521a081b8e30a9a3da2140f22c1e816bc9e014e93f84. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPPO00257330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142fdbd3b34705707aa8ed5daa11cd8104889351f071531926bfbd0923ab8d02. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/JPPO00257340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5373f89e93b9a717b2be85ec7d55221517636fbf2f88c36c71cf9635f1d7bbc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPPO00257350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a722f83b3794d8e1a2c80a7df7bbd08422a2f6aa3311bab7a9fa274f3c3732c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPPO00257360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82501dffe55093c1899f5214f7ba19246249a848645339982fe8eb332d7d44aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPF300100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483f824bfa39db57fa359e4e39af837af60a1bab837b019b91e43b3b44cabfc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPF300100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe3304c1da14ea3b7b9303fd7e28371a2fdbe22451b64f4d8a877d2b128abf. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/JPF300100340.