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 0x66095cb9f57846efe485bae3c2f00a2def786ec76784d420f4be1889d64baa35. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8519defd-b69e-4fc5-a7cd-a88c4eaeeba4.json and https://artists.proofprofile.net/proofs/artist/8519defd-b69e-4fc5-a7cd-a88c4eaeeba4.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 0xa4157700ae04b49acbe93cc7b9fd7ea290db369fd96e263dce07b22ab180a4ec. 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/SEVGT1401701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf7b0e8d15f1f18bc9607557a3d4b4d36243067cc53a5d4f086979da67e58b5. 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/SEVGT1401702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc40de153bd11eeb57bf8d3da2bc7b7644e0ce4a1befda09cc21b9044e5d847. 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/SEVGT1401703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5236cd2ccd05a21bd7e41c8d83ff31160b0c70b61d93511637899a87903b47f. 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/SEVGT1401704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5234c0fbb9288b5ec8d8343e595a16f50e29ccff5d3924e04554ac1dfe77eb61. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/SEVGT1401705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08eb0b08abc97a19d0338ad8fd2b1d762ded4089169b532b38984d0d9223e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEVGT1401706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274f019278bc74ca7e689b581d40526bc42960145f5849e08b321e5e37541d8. 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/SEVGT1401707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd692c42eee4380af02b64413cc0427d782b3de688deed8e0d2aff82f16f97. 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/SEVGT1401708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa71217f68efb488e239e6bc3129df70228ab9c1655048d31dfc4f1871af8067. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEVGT1401709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3364269c004992fc5fcc8300b3b87ea5ec53b998324ffdbfdc0707fa4448b55b. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/SEVGT1401710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fbb6ddb8208d5f8301f5fb6517a7a551871c602efcbab93759a0287887505. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SEVGT1401711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46969c924d00b3e9078a92ea10cf18d1f18c7466552b7dcf4bdab07bffafe36. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEVGT1401712.
Jul i Folkton - I solvändets tid (Live 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66512f79e777ec629282fea5fd655cf18a9b67ccc370aa1e60acc1c48b54133. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/SEYNI1100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46178cc1ce8e84655f7a4088a07aa738597fa6dc694ab896e548162067cff6e7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEYNI0901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543faf1fad1ab68ccec5f9630c2114a829b60cc49225f48d46229be0b6efff8. 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/SEYNI0901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be3adfe4f5c27d3f9e91a97b73f3bb2508fa7d7314843ddf7afd36d86c5162. 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/SEYNI0901615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d3c289552f1f4443aaf45ce5ff26e33bf5d9c835a184757ca7ebb366c9cf9c. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/SEYNI1100408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ebc6f129d9e205cb5a6e6933f9922b740b2f774ab5f4e31b22a35e564fdd2. 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/SEYNI0901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa613d65a9d4d92501dff6ce58d6bf7fbb3c74b2a30309f68eba4cef3e98bcf1. 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/SEYNI0901604.
Joseph & the Angel / 8:Th of Jan / A Punch in the Dark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4e6a13d30cd8076808828e179ab9f84f16af6d3f80143e549b5f9d8f9cd3c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/SEYNI0901608.