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 0x0c7011619f1b21d52a2245bb60cec5f440db5723da8730e1d6df5e456a1987b8. 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/6eeb3712-6d77-4945-a3c2-7898442b26e6.json and https://artists.proofprofile.net/proofs/artist/6eeb3712-6d77-4945-a3c2-7898442b26e6.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 0x917be2a87dd7a06f21536867a4a8bae124cc8fbfd03fbb3f407ba4147c09eaf3. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN31988230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167dde652d775622e3d4160426aa3cac8952a843d41ca0f7fb3dc00f07c6de36. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN31958674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31733482155ec4cc9db0a7888f637f4bd4e1e2834fb30190bbc7ae88c7b9d001. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2P2044733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100547d467c64d41c8afd8091476370fa635f740d0a5dbf24d0501af9e5b85d. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USA2P2115903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557a0e6e6a0fb2a46c6876afa27dd6c2912b4a944bfd73bd6e999a48a2128e56. 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/QZTB22272516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c4f5d2542193aef2ef7e9dc00720824d4f4678564986b7e93db0a9e3c09fc7. 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/QZNWT2379882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5ef4762e41ad174b21921c183346c9488ab11eec690f877d9b602d40410078. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNWW2303301.
Undeniable Forever (Tessa Blanchard Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b0f81a308e37fe5b2a8da2f0a00e1c24c3ee99e2919fd1d057239432a65470. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJS2527441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f11ecb37fb8d5d8c16d4e45299d02c934ca8d2da3f82e8514bccd20441c79. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:29Z), 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/QT65W2521899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd823334f438de49a7e481b5a108b314197e145388687aec47b7baebe15b57e9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1339579.
The Crash (feat. Krystall Poppin & Felo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cd02fea11a0c2bcfaca0ebee9cdefb15222e85abbb4fd528a2576e04acb168. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUYG1382460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a506f6b4510011bf3364c6227b63fe37796cb2fe5367bfe72f63b69bf3d5b5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTB62442804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c3fbd05f9c27a2279c1e035795c9dc24c464891a8d9033b3936f0599d00141. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZNWU2007460.
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
Cuatros (feat. Paul Wall & Krystall Poppin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b56a2f0d498458a8d71ee1c6d9e23ad307c780bb2cecc37202dfa51586bf28. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USUYG1364102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761493c2e0012532088abccc23337eabd2cafb4192312a1c1906ffbe116eaad2. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USL4R2310039.