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 0x7cf2a2439f28f6419139bbda6223532ed78121227dd3c17eb262e64ea690f222. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2025a17b-d7a9-4172-816c-fba01ad370e7.json and https://artists.proofprofile.net/proofs/artist/2025a17b-d7a9-4172-816c-fba01ad370e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SONG FROM TV SERIES ”【OSHI NO KO】 ” (Vol.2.5)
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 0xbd86f6a4185d5e42c3b2dbf15b90ce40ddfa4132e79a6c09f8f6a8cd4323d9e5. 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/JPD732300589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48686df05986a96b1defa6efb9a46670fa7ae45f4e8c251d17036209a91abdc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPD732300596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bdba6f40c58cde25a35143f4fc1f7c36c6ab977b48396b4db8bff224a3a9d1. 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/JPD732300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf477a6eab19a49a6b69f9a7e20f91f46f975de2302d18542c8af86c44c2ef375. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPD732300586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265e976c853db615319c3c110f11bdf39cf64f6549f31c5aabdbdcbe15b5167. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPD732300593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe695f7dc0b119b8606754b20bc0e46af3443e166a429867e81b70ea2357bcb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPD732300600.
STAR☆T☆RAIN - NEW ARRANGE VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf55de61310b786afd9c98643251e08eac4f7f4b662c5a29679b433c865062. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPD732300591.
SIGN IS B - NEW ARRANGE SOLO VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55b570aec0f0daa845d11deaba210408745b5fdee0708490c3d35fd8b65277. 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/JPD732300598.
HEART's♡KISS - NEW ARRANGE VER. instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e3ba333d66477772a7a0cafc4fe23b97db31ce7121e4362fbf9a7a2c4bec7d. 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/JPD732300605.