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 0x6b89d51eb449d5899038d19fd611b8df63aee005ad62e21559ed47f7f0dc796a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/945538aa-46a8-4b11-942c-3cd1fefdc3c7.json and https://artists.proofprofile.net/proofs/artist/945538aa-46a8-4b11-942c-3cd1fefdc3c7.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 0x03e43e49040a5054ec5e6f86793b58bef97a20091fe9b6d5e2770aa8db9cbfa5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPW561901599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5e429e0e857185e52e853a30f93dc1ec811f224de66939a6ac88c0351ba3a4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:14:44Z), 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/JPW561901583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e439ac85591ad23193912ca505b94b22df23a189b23e81241c1cf5f873c9893. 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/JPW562002312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab05e1250e287293676d942bcf95474c160624c30f07bf287ad04cf80dd5ae1. 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/JPW561901570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3404615facb77d8009e9a28f973c1a7cc39d936ee41d7e1b18b2f4af7b9d6b. 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/JPW561901575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e138f2df9cc0b8e63a0a367cdc003c8d35d06977db2de2c0a654ed9d8093a3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:39Z), 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/JPW561909661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca192cfbe6339f2bfd4c195b468bcf24a4e6c1c5691bfa7ee80d5d58354c4fc. 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/JPW562103236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e695a1f82c487b4936fb74cc151627c35d85e7bb585d32324b43b00ec945e9. 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/JPW562107814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69699624ca94121d0734b07d149723e9c56b986331a377bda5675354a30c5a4. 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/JPW562107815.
ワンルール・ゲームチェンジャー Covered by AbsoЯute Zero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1ec65a5623ba4393e2568c61b5219cc8501b346131d4326d524eb133473895. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPW562107816.
君はもう王女じゃなくていい Covered by 少女理論観測所
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9599936e4bf622dcb1569142f03d998bf3ae7e040d04ede216784e1b84ef296. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPW562107817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67309ba8d56984e23f91c0db3986c1234327892df71cc063f7282b4cc91cb216. 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/JPW562107818.
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 0x2754644dc667ce49b5306649fc187960f564e069f90717b60ebe2b01875fae04. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPW562107819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff2e2ece13e2f21de32dc265a6887fc709b91d678f3e1293e3609f3b0a5e82. 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/JPW562107820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef43f707edd4eb3b56a7806549bbe78e7a84d4dd653bbb66aa05d372154373. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPW561904198.