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 0x1d39f16f1ebec77837d3505f1d34965aa388ed6ebf8a42ab9a43a650b56f7992. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/093a0332-8c37-44b5-b116-6b9ffd1ff321.json and https://artists.proofprofile.net/proofs/artist/093a0332-8c37-44b5-b116-6b9ffd1ff321.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 0x032ca7dbba8a457af3feaea72746788299a5cdc4195f4fb2c594d1ff9ae1c273. 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/GBKQU1954074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb238ca8af7571c4544350d90f46a4090f00ba80508621e788783987e7ecf5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1954075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd596acbfa33894c0e4d2a09760addc15772c828a63d5946c53a845806f73d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1954076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367e7b18c283e70f8e0a91e4757449f9b35c69f2bb9c315c812c573aae45f006. 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/GBKQU1954078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea604e4679fc2d9a23bd690279842ab4391a1f15dbf47ed15b9df018b221a7. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBKQU1954069.
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 0xa03b787c8cdc16275f270d209f9e6bb8722417b9d963c77888c8b4b8b7576d77. 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/GBKQU1954070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1be842c50f77cbf4f6a3cebe18b4f1aa4d20d1b2f6ceb3b6ff1242b2e6afa5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU1954071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162e253edcdba477ca45a47b6ce440b9aac15ef536f355e372c6324c2436bdb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBKQU1954072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16707cdc5fb1cc5e8b6df4a158edfebd563089484fb1bd4952419f77497fb6b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU1954073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8520c951016a66bfa35839fefe1e283bcfbb1ba12fc24aac9a03df13a2520f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU1954080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06609e5d2e9192a2de7938289c4394b34703a6b95af340717a903513ad6ff11. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLS161802502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bdfda88d86b7a8720ab6b982aacd49dbadb70b8a4a31e6726f7bff0c0982ec. 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/NLE801919004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddd2f8dc545e854eefe6d25793e01205d6d97ee35dd1b36e2e0098e0e04b897. 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/JPS801850540.
IRREPARABLE HARDCORE IS BACK 2 鳳雷蘖華 ~ホウライゲッカ~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68851d5376f649182fea70c63674c27fe280db96808c5a4345e55d6d1a6b19. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPB602168460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc5a1202d05c28f88b03c3d0bf1a22af83748cb7a5495f2292f6b32220383b. 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/JPB602063272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e2bdb40fc83b16509a15a71dd1221182f2afcc17e681eee8e189bee488f9c1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPS801852117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf96a9fdcf0498abb7b908eedcdf7ed1d9f7dd5b1b5029853d5f3a119012a6. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/JPS801852120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e51b15f731600ee0f9f139d1ce200cde26a1961980569e7efff60ee79d5ea. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPS801836290.