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 0xa21c8608bb1914109458238697fa9cc46c95366fdff0f2ad6dc44fad8bdba50a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e78fc2cf-575b-454b-b1c6-b99b57cf4160.json and https://artists.proofprofile.net/proofs/artist/e78fc2cf-575b-454b-b1c6-b99b57cf4160.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 0xa4157700ae04b49acbe93cc7b9fd7ea290db369fd96e263dce07b22ab180a4ec. 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/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 957084 (2026-07-07T20:41:57Z), 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/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 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 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.
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 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 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.
Adjö farväl (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72920ba4226b00689fbea966f0cc40dac19e129855c7777fbffe5888fa487d29. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEVGT1005403.
Abbekås - Möklinta (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0706efa849728a9d3d26b1b9f9d6e3a64222ade73bec22360eb255aeafa9752d. 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/SEVGT1005407.
Jag haver ingen kärare (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d25a90764ecf21fb4755b95b980c65d92f6ecfefbfc932cbe6eb7111defd3. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/SEVGT1005401.
Fager som en ros (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096bce946eecbc4eda3409f4619c1de1b6058ab239900bf5357f6d26328ad17. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEVGT1005402.
Getapolskan (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12030bd0d1e7afe73141431a500c70a9b99d2b1cf0e1ea626e84f80de6ba1b3. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEVGT1005404.
Jämmerpolskan (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5ccf21d69204d6b4742a4f01a9386ea328bce5237a229f7dcce5387a1a0bf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEVGT1005405.
Till himmelen (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135aa1835505bae4bb015958b5282724b6ae0da290dd98a192deebda01e7925f. 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/SEVGT1005406.
Vänner och fränder (feat. Esbjörn Hazelius & Johan Hedin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7806382d3bb3ef3f3179ad40db7947c11ff75a0ba1c3ae8f37b5f218bada3d2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SEVGT1005408.