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 0xa58f9d8d775f4dc4ee7a6f50a8f25e8fc11ddb057f83d8122ec0f4179acdb675. 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/14ab8fa6-606e-4d1d-bb2e-927196564c03.json and https://artists.proofprofile.net/proofs/artist/14ab8fa6-606e-4d1d-bb2e-927196564c03.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 0xe5b01285d9da85d6dabb651f75bdd2939f56558dca85f5fc820b905b032b229d. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/KRA381000932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb73d2620f79185eb3fd5c8b1495c7bd151eb3caaa8d227825524933f010fcd. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/KRA381202029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b257ea82d1b47dfa97f93e212079513c226f1b9c3650b47e11363eb6dc9e4b1. 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/KRA381202032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b357a884a42f54b93e1d83a52fb7a0c76e88feb8502b81f39a0111a0a9dd37. 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/KRA381202366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4707ee0d6719cedc75301765ee861b14cc7d6f5076eca14992f55bc61999ac. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/KRA381206081.
The Spring Day Of My Life OST Part.4 (Soundtrack)
The spring Day Of My Life, Pt. 4 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12979af8c62671fef9de1351f7886b30f3b33bdd024ce028322a3e965bea4ae. 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/KRA381210202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e593246146abc462fe36d4747330268af67e4cec07bf4613d3eb8501835f5f4. 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/KRA381210205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fd9349d6471d440e8ba92d47b8fa50b350618d142b19b0bcfcef585d6e7a03. 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/KRA381210206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c8ba1ca2bf2be58db66687e8d5f44c91d6b71bcd31bb1e25b85ce55754f6e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:55Z), 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/KRB921903553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e8fa577a0f56c7293be6f9f7abcc843fb61ae65ca69cd6dfca90dd5745526. 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/KRA381601052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bd8f824c08433c4fa67926792eccc846e903d643b6e7b4c45b63bb8718e080. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRA381601694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64365f730418b7dbda8503b90fc7b38a2dff4a20b8c42413e6124e6e25d2d2c0. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:52Z), 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/KRA381601696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501cc8047c8ac2c98844518554d47661af904329d997b3e491fc59bd505c035. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA381700163.
VIP Pt. 2 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7044d6e8a774669a3a3275002f02c1b10b62069ba3d1b3f0ea5c8229801304a. 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/KRA341415823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47e4f6c6e58a438b161ff7cebabf61d6dcbf53fa10a738111e2a932f763dd0. 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/KRA381205841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc984368e96f0b95954e3d6ebc3e996a99a9d5ec2f7acf94bb9484d242e6d92bb. 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/US5TA1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05e9bab15622a331c95abd8b3432bbc7fcddb8d85aef1fe6940963d05b8e9ad. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/KRA301700110.
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