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 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 0x6d08e8c3fcaa914d8451b50e751ae6d2b8fc7114f8e9280f3edafee733108d78. 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/bb11406c-ce4e-4ed9-866f-41ee536fae1a.json and https://artists.proofprofile.net/proofs/artist/bb11406c-ce4e-4ed9-866f-41ee536fae1a.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 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 0x29f88a9d530eeb64d76b61098c10d8bfd9e57793f5a9690dde5c4f23d3fe219a. 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/KRA382317555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c3f5bd74b63b6067b2210ffd6dba2a3ec0925586e52fc5d2c176bd0da8f386. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA382317556.
The Witch's Diner (Original Television Soundtrack) Pt.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290edf90e41776998334c43f9b74ed4e490286084ad2c748bf5d410fa445876c. 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/KRA382158986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242b8d32606d0eac8879522f07175de376d1d197abf7e91d74bf0aa1daba9aac. 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/KRA382158989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b276611606147ba48accadc228c3283d10c29af314635ad399782615bc84bea. 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/KRA382158990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39972991c49a112cdb8447fc3e6ad65db9b770c202f5f1c477e7bc8095a50f6c. 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/KRA382003297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b8bf26280e6cb98118b07daf25977084f56a1344d0fcbcf5551c9db742ea2a. 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/KRA382003298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1540dfd0b138e8e8cd93b3995a377e137d0e8c947daa68e95282aaf3060c8f0. 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/KRA382003299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe950a41546acc11e6596459249cc8d6231b3a9a8da69af340dbd1630d62d4be3. 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/KRA382003300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc120e55410e16ef4a0296ea7d984524939ac1fdd8550adcb367eb1ea46ef5. 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/KRA382003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910a309b081e4abe49f6074545c3dc1fce9d9cf3bbdcdc81510c04f50303d502. 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/KRA382003302.
HYENA (Original Television Soundtrack) Pt. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baed147cd9a91b0230bfe413cc293c0d63988f3251f002d2293527f76fb9619. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZEKE1932754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e07b63e58e645c8284058a552234a6453aa19a44ecf07da73896f2858c1b39. 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/KRA382403542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6355d358d9242703614a33caf537edee4cae15995a955ca4ec31ada39999b507. 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/KRA382403543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8324e20cdedd49ef9bfe24259dc7a84f420996a09e20697e0460c105a75ea7e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA382403544.