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 0x97999b2496a36811c7367dfa958f6cea8bce04ae03c8ac5f43bd2fa3b9a45e04. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06da0339-7fdc-4916-98f8-a3beedf46288.json and https://artists.proofprofile.net/proofs/artist/06da0339-7fdc-4916-98f8-a3beedf46288.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 0x3e43a1cfbec9bf4d4c5bef9bbd9d530979d0fec600004b83d551e01371457957. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPTK02102760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25a714f7efd55f88d81390570812ac8f4634229dfaadc257555aabcb31819d. 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/JPTK02102779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbe2e643e58770a3ebe59273fb8372eb0ff306453e3e2f109fd20f8523b4a73. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPTK02102799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ac55d7487e34351ae0b06cb22f4d2f6203d5d58d61bd9fe62b44aaf3593655. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPTK02102800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adc154203ca64134581efca17a9561fda93a1dc18ba4eda726c4b5c1f6b8b60. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPTK02102829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d9b134fe9e7685f4f4349408973659c4eb0515479f6aa086c7321d7a7a03ec. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPTK02105910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b0d31ba7d2a7389fcfbe193f446bc041b5308b7c5bcc969291f10c8096611f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPTK02105920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ccabb4e3ba74e8ca98eab9ddca49bc6513d4797371eca75eeebbda51f4ab67. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPTK02105950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704d0d5b4cc0159883a6571e7bbf84a904384c7191f0155be266c44cd5926146. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPTK02105900.
キケンなサンサンSummer!/ノーヒットノーラブ ‐SPECIAL EDITION‐
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5628e3e2ed35fc3b418c4065ee58478e26511766834bbbd8ce4a600b09cfa9d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPTK02202520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bd1532a292b12cf5f0d47e5615e50dfbdbb83f2081c6180d026de05f6e374d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPTK02202530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1bf4e050d060abaeefb9fee0dece41cbb46fc195ae6c543fc3eab2f370ce8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPTK02202540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800f84496b58be59fcdb638d0f8fd1cd374a0997a2c3144cee202df5f24bf540. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/JPTK02202620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027798cd6394b886c20c1fa4dd8a8ac240941c24d771416a94acd6d516bcf83e. 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/JPTK02202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f54b34994ae8c9caa5daa5efaab17bb9d05fdd184f4ddd620ec73b1974ed7ce. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPTK02208620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5084d3d927d32b25ea1279b44b71d16c91b26d9d7b7a4be73e05461de76bdd53. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPTK02208630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e75b8e75f3f851b15663e93a71d1977e8f4e3fd9ce7feee5ed2fce43417a29. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPTK02208680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e46ed0a7095278ab707127932247e7e609635922bab5e7a65712d8e0b194a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPTK02303730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42bb35e1f59c28c16854fd1a3f72ab0ca6a4a7824f78490dc66dbc19c7358b5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPTK02303770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17897c04028b024662842a98b7a24bd218eb79ba235d788d17fb6fea0aa39e89. 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/JPTK02303790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e8fd8035fa11544fe519267e9f7dfb3f1ba4b8a7f3cfdbb237c437674ba55a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPTK02306800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3359b9861207d95716a56f80cff541b6e01e995437e9a6104b024457e2b81223. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPTK02306810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f68048e2edd65b017451d2ecc91a6d96bc148dc5cc5707c19e3fdccb0863bff. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPTK02306790.
冬空ラプソディー / トキメキ NEW WORLD ‐Special Edition‐
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a36707b8e81d5d9753e961accf65da90df55a87d3b527d7dc3efd211ebd6d4d. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPTK02306850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13554fc7cbe82c4e4cee0fb59babef61e7d3d4ecdbb6f8050234f74e73188232. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPTK02403170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d760f6d742e8166d2361b46193c5d5d3dd668b381640183c312f027b6ba9f61. 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/JPTK02403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533d8b8c5e64fea9f56b1cd63ce8fc52c41204d45a3e6a3de305efc93212bc9c. 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/JPTK02404110.