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 0xc061651f0b3aaad3d3d828e320a9392697c29308202de584ace96414e1f60ae9. 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/8b0a7c5a-85d4-489a-a94d-17e51f6d8cea.json and https://artists.proofprofile.net/proofs/artist/8b0a7c5a-85d4-489a-a94d-17e51f6d8cea.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 0x8e9df6aa51988499615c839ade78117b07195235d6ea74c3f83460f079a46fd4. 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/QZDA82136898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df2dfa09761c44b4aa057e2fa75c9a5876488132a09f46d6de453ff5dcfd3ca. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZDA82274176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01587c4e51c27d36f73562ddf8d73e6c928c92f5e8996cd1b479a4d2e534f723. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTB92283338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b3d13140c24dd2b08c6d5e28c5ba0203c124fa83f683b8a373c8bd8c4371f3. 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/QZDA52387922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c70b8e20570ef64eb47584439b3f04544f24e86680b463acb8e34a993d67f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA62399289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df2dfa09761c44b4aa057e2fa75c9a5876488132a09f46d6de453ff5dcfd3ca. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA82274176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf1d267d3af185c6cace1bb45c107db39a720e20ebab7030c706687b1bcf2cb. 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/QZMEP2341899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b193fc5e6ea12f8e6a677bf9ddd61fd187358e74f456d77dd3f752c7ed89d09. 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/QZNWU2385820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15214d571b6e69f693a5586a45b3f6372f8c687454ec4781c6bd88ae41e013aa. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTAS2391018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc48f588f00002bde3dea68d24b0947ca51ca7a500b74400a1ae33f5938aa4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM24S2400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802835a5b7708f2bf18d8fb389cbf8752b447b7a67cc6513fe0408b026c49368. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM24S2401558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992ceef913553296e4dee813cb8fa6a040a6a0b9c216f70788ac04d89558db3. 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/QM24S2403256.
at some point you’ll have to be angry at all of this / Think Before I Speak
at some point you’ll have to be angry at all of this
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd001ff01cc557ec4fa53cb97c237af6f2a8bda304caa7b5dabeb678fbdcee0f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM24S2403871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41099b73e49585b30fcbde10304a8d8bed9c9cdc09a15f6ec7e04d87706a3610. 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/QZNWP2350434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d003bc26b119f15547d88e703e65bec93d29540f2f8c00af5846e1f626b9c. 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/QZVR22400200.