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 0xad250914898d15f6e33674cbf554687417f06e326b0c38bd5938abf74659d4d7. 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/3b5d2cd7-3274-44b5-9cce-67c8cb876a84.json and https://artists.proofprofile.net/proofs/artist/3b5d2cd7-3274-44b5-9cce-67c8cb876a84.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 0x458dafb57f16aaf976c759f8fe6956b27bd30f37bc6ccc49969340fbadc22df9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZDA82291601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac9d73fa8ffebe2c6425795c03edf676ed701a90d2fe69824f76ed885bd86c3. 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/QZHN52226816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2d4f946b356304a26f097be491070bf02b25f4a92a89c95dd57f8d0a2f8dc1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZES62312662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb4dfe28c9e47d16f367dafd72a8c782afca5b642998d0e3bf8103192c4710. 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/QZHN42388949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ff5d890cb4ff6a7a339cdb55fb16c83d66d13796a903024e119f6d829528c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42388950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00824fc11d3d93c23a442562b37eb87048571a93dddde81e585a65ca06b53e89. 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/QZHN42388951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c48d8e5ce29634cb6c83e3644d9da5c51fb78df0ecf4ee16a3bab059c3541. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHN42388952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87d68d9020f414b89b81c4744211e78bb24f6de04db285cb0c3f457aee52bc5. 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/QZHN42388953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449eb5a49336c649040a30cda3c317c015ebb0e432e7f0508263a717f7499727. 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/QZHN42388954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce91242e8957696aaa697a397aa0d264ad5c3d983cdacc4a349beb28912b92b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZK6J2329540.
STUFFING MY BLADE INTO YOUR STUPID FUCKING FACE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9967483d74f092b88a836da4ed0f110262ade81bde345cdd2bb1e0416c8020f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZTAY2361627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30adfa5155fb19de538d252839393819b83dceeb653f1faaff1c1586382ea808. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7Q2422918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e16de2f6b8640b1004bd3d3571d38bd16dde507d2264a7c8bb47f215941586. 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/QZNWZ2535294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8bc6b24b9c81ee512f781d001f4b9c84c776ed844129a33e1753cb66dd8a1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB72580902.