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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03823130fca0dddc6c9484522be09020359f3373f3ba5f3f5eab84acc9be386e. 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/2f5da9ce-c5cd-4b4a-888f-abb8124403d3.json and https://artists.proofprofile.net/proofs/artist/2f5da9ce-c5cd-4b4a-888f-abb8124403d3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c78fbce28db83ad221a7c0ebb69895dc1d14246d461f7a505e4c1b8e827d35e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZFYW2097328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122a739899e5baf3b7b54d6a4c8595aa7af3a914e87a208bf6af4da5786a4c5d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFYW2097329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cab11aacf2f0edf559bdfb788aea14dc2ad00274dc775edccd7bba09c9ed14. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYW2097330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c0cd5c3a0050cfb80cdd948185096f3a497bb8773b30a38a33df89ae098ce7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYW2097331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7284c4fa57ab8518cab219b1c5445620c77f292c967a92f59951ce49d9dd939. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:07Z), 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/QZFYW2097332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e07baacdaecac215fe6c25c9baae568be448d5966de20b376e18cc3c3690ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYW2097333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622533eb367907746af3c471d940c464b27d8bcced54ecbcea3f91deee816f48. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYY2185437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7788eb8ad0ed15dfe5e10591eefb5071ba78f9ba81159f2afa6bbf4cdb8b1a05. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZFYY2185445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c8beaa118fb0286b84be62dccdfa923eba0f19ed2d6ebcac7cfe5c49741ac1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USFMA2300145.
Aquarium Drunkard's Lagniappe Session (Second Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db663af5f168a232313566cd7a967d09cf3b21695515aab7604ad50c9f070a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFH2379059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819701561e35679bfe219f278d5d93803ed6845ec5134d53c4945a5243290b0f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZWFH2379060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c728b678babe133f4573e1c15b9f957b72b76d262ae671049e23031033b8f9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFH2379062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb8aaf84083ca62d35c49e97d009eaed3adf4678dc20278a70e7a060220d09. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US78L2427502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bb9e4186a21553c55c0a674e28b54e28f60d4eddff5ad56d9c9e6ebabcbd99. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:38Z), 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/US78L2427503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb8aaf84083ca62d35c49e97d009eaed3adf4678dc20278a70e7a060220d09. 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/US78L2427502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bce4bc22402a5ebf7e1250bff6746db99a19890e63048b7364f71325241036. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:30:35Z), 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/US78L2427510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a9dc2022558aaa090da298f09aed10489ff7a88304f860aa48dcce67d67f3b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:09Z), 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/QM24S2501468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26f5b15fc1b5af9c5cdb410e6eadb7b4c7c4150274815b22bc62dd70a86b6d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:22Z), 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/QM24S2501467.