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 0xa20fc6d274bce7239b4e18121b609862708b4c521ffc3ea4a3fac61e6e494142. 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/03b0da76-0e5b-4121-8493-312f2294109f.json and https://artists.proofprofile.net/proofs/artist/03b0da76-0e5b-4121-8493-312f2294109f.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 0xcae96eaf70093126ced1bbea16562ae306bf9468c2d4e9d75ccf428765b87e09. 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/TCACK1515884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757064368a1ecd2105b0de78882a0331a118336bc98814c10e28d1e153e9e39a. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TCACL1622887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b6d5fbd15817f1c607d9b46412996b3f68b159a58f83ad27ed5300f7dc6ba0. 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/TCACR1686018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c12af098152d09b657b43a32f2dbe7786607c3d346cfbb23a934a033bb6faf8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACG1572897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf141d9a421eea9af3317111a3de649aef18ab9541f88666f625423653650fbbd. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCACR1687523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d017ef7ccc0e744e6dd205198e3e92149ec97b47b9cc396abaa6f1297ce61b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCACR1687536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a11903f7c240537841beda1f0910deae7d31a975405a36272023db1136dd15. 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/TCACR1687562.
The Last Illustration of Tdot Illdude by Thomas Jude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b935a4dd985391ffd3e9f2dade987631427e20aa92ef9edd9b0e130c5a0cfd5. 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/QZLMJ2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf117ede1889f7baccad250f275e3f348b12edb7e3b7e95b125a1e51b328e8a0d. 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/QZTB72589295.
THE GOODWIN BRAND PRESENTS A DOUBLE FEATURE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4708c783ef8139b9c6bec71c9ae4c80ab724339bdb9c4dccdff95ac854c3d123. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZWFM2511393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c25274abdd2f7d12a3fdc368c8e6ea6571674a56529648d40275f1a2d0b5c5. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZZ7M2540979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6994db413b19df261592255daec705ac7b51c3eac0fab461ff43cbf6f0497ee7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7W2589180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9786c4ff9a21b3889ad8d5f0759b5dba6e6987d84099dfc3e4699a4a8737d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QM24S2006614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80db5702bad83f9dda55a6523734da56a574f6f5148eda2b34e8ee2b00a4d7e. 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/USUYG1266883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bcfda194c2de4d313a23160c4d93c153a56bf09599d8b3fec924f5d06db569. 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/QMCE31500442.