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 0x28871d10104cfefb1557c84894dca71dc158e07218cb9b5d4d931d8ee7d10879. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f250e206-2f31-4306-a538-9e7763e09df6.json and https://artists.proofprofile.net/proofs/artist/f250e206-2f31-4306-a538-9e7763e09df6.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 0xa0f45d31f499875c348ddcabc610333b2c10276847638dd3a01ea3ea3f84f14d. 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/QZWFS2409440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bea6a823953bf7fbf2b165e8067cebee839b9838a8838f2c0bb3b66f6b69821. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWFS2409441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45700e72135b6bbad14a4e363a5dc7fb756a13ca240d9a360fb1639f034a9bb9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFS2409442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b72c0986feb24e14afcfeb56bd7f1b71bbdec4925087459d92862416db997f. 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/QZWFS2409443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db7708d24159d9fd140794344c2331b5001fdf1f93bc2179b3bb1ee1450a74a. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZWFS2409445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e54665ff62fe87a99f80a3333263f7167bfb87ec908afe80e86cad79ada2cda. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFS2409447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83cad6c361f5116d5e53602c90ae0df2aa57913d4214221974a0664e3ecc84. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZWFS2409449.
Looking at you is like looking in the mirror
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecbe4afba1f5504f72113450712fbe95f028d12bb705d9fbd009501c4ed3d8c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZWFS2409450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc6f6d9b49371e31bc61fb8f4665bf1c51492674f9405bfc38ff0faabd1045. 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/QZWFS2409451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6171a5737f2c6c2590e1ee28a61fe1535d38924c91b559bfb7b3a1a004eb5d5d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFS2409452.
Don't Criticize What You Can't Understand
Don't criticize what you cant understand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c89a13c8af21e76e12d5265c71f4c65871c577b4b5e0dc6bc375997c45b2b. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6L2502452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0efd41a72ceb2d4daed0210b299552be9a130de85c50a754de86937b6dc608. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6H2559396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a674afd34180fdbc3d75f7ad3f43281cd24a010e4beb8a66c611d124cc6d96. 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/QZK6H2559398.