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 0x9710e92afafd8939165b96dc3c6fe70cb33ff3c753ae6c139a5e76f163950c08. 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/c1e06575-2799-497e-8772-482c8007cbc2.json and https://artists.proofprofile.net/proofs/artist/c1e06575-2799-497e-8772-482c8007cbc2.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 0xc01fa86588af343a4557674a6d4667f866ca68c038737f83c342b6c00cf7c3af. 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/DER371907901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37df187a4f663f72307ecb07e9f3762b806395c73201ce52a6ed33ee1df1ff0. 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/DER371907902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400f8f2d7e0a53ebf423c4f610d9e609e47b90a535d12061d3bbb7dc821f785. 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/DER371907903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad53244f46b0c89ecfb9cd873d95da9aab18d9070d5827100be343f5cabc2e3. 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/DER371907904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2848ae238df58886515ab249b743e56bed8c91076aad71061465d54f59ce6. 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/DER371907905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0972133c21bbf0f49abd8016ab1daac238bba9ed69aed2490cddbf079d1c87. 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/DER371907908.
We Are Just as Welcome as Holy Water in Satan's Drink (20th Anniversary Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45577e7bca8b2cc415d3a43ba550a67300ffaaa9bb920841581d14fece33f937. 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/DER371906301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef0c9f1908d22abe486888ca8b4054e6a15cd30f5a6f99641585ce44d83b209. 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/DER371906302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be4dd33440722c5615ff387e2ffab4f083a1479e5552570fa537de4af2392c. 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/DEA451507170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c5844c90ec1806468061ca65b5b3e88952d58872ce02f1238f9d66903dc64c. 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/DEA451507210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e43a8fe80d87b87465feb3739ec1e1689d3e8be0ebffdcad7ecf768aad44e. 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/DEA451205870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f23d9893801f5db991acb452c1d57fa4545450a2dec3f3ab3004573980df40. 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/DEY111000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2fc76b772ac760079baa5c2652014a1ad69234aae7923ddb41a21e305966d6. 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/DEY111000401.
Psychopunch - Original Scandinavian Superdudes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed7e1ec8b0b94efe663b861e5c54d9be2f34e65bd30b0edaa3cad5ba8a4a5b1. 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/DER372232501.