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 0xa6729c50d2951736ac2dd054d7d63aea9e938d50d80b8d77ae2d02b84a697305. 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/0188e3fd-380c-4fc6-bba6-9b55e600e96d.json and https://artists.proofprofile.net/proofs/artist/0188e3fd-380c-4fc6-bba6-9b55e600e96d.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 0x54b410dc434686dd27e36f5ba0062a1ec4a60690c58e4a8e4c63e2e31c356e03. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6XS1575426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceab69e71f95b3d889509ff05f15e91653f5e43ef9f3c69018d97a547c81ba5. 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/QM6XS1575427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cd72980f6f349401259217d766931b12bbbaedeeca99c75e99de051eeb9984. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QM6XS1575428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe747289d28652f67992217855a62d516a3a135c60998e93e1efc8853a99ce962. 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/QM6XS1575429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb63e9a84d2ea6db10f85d5e75d011e0b9f5cadfb3d43d33353ea24d1c836ed. 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/QM6XS1575432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd5e39a61671bf2993e6a78b6493ef727ae01ac3852daa2cceea42cb9944da1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM6XS1575435.
Holy Youth (Mindless Self Indulgence Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3200cddab120229af9c8971b544050b8ab78a58fb5f9bd7a75a75f624af37a0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACW1728209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82371535f787d6d2cda1551d4111d6834b1ba86d8995270abd1aa9e6d7e1f6be. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/TCADM1806495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57cf5f2bc13402c549c5b42cdf1ea1beef6e04aa96f460b122a2454616e47a3. 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/TCADH1795385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca17318a23cda63156d7c43d0bc38d9583f641afd57ab2a945657bac572e954. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCADM1806500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248f52c70ed681e0d2bacca2539413ae9267c71bb256711596b47bd132218dd4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCADM1806501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b29cc76e114c94ff9cedabc746e106cec0f3cad09794baf61aafc4ca5edbde. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAFE2062059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c54cfacc7b8729657d8412c8f8229ffc8d3d7c8ad749bfbec9fec7d6e7cee9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCAF02122231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0464c4ddd7c57f1005410650dc5f6799eea2dbc401094e594c160a46d2908d1e. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBKPL2282972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2606217b4c93bb93d87712fe875e59508f285cb4d4a00f53cf396a0c36111d32. 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/QZTAU2242201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ab05456bee16969d9ebad3e9e218c666791542917de43689b18849860eea25. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM4TW1532662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5dc6ecedf0bd9e0ebd7fb992d7fa277707ffea3ab6cc6bd5b1864e2f8dc62e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMCE72423108.