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 0xdf6b1c919de5dc45863980d38a5023d26252fa4c9c46b2bb7837325b4e5c6b3d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97ad35d1-14e7-43fa-90a2-1b2cdf994920.json and https://artists.proofprofile.net/proofs/artist/97ad35d1-14e7-43fa-90a2-1b2cdf994920.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 0xe31bf7d2d4861fecda5b0ed62d36ccc4ea074c04434fb66bb96dc51af1e4d4bb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SEYDQ1802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc973f9247c42fc57ff88164e7418cff353819e6e5d0c7d8fe12dcf5dec723f. 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/SEYDQ1900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588581ee21f2220910581264e69cfd8caf93f290fd30a7df88bdb7e986d4a273. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SEYDQ1900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbea5b4cf85ac3caa2ddf08f42ae72159ea7faacacbf6d4ee56843f3015afb4c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SEYDQ1901401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d4af650c70ca1dfe5c0dcf38b800894c0ebdc8bb3bc85084b4a1dfc8b68f2a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:08:45Z), 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/SEYDQ1902201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98de1ba6d805902eacbfb3f2ac4f059d163c3de0b84d30d4dbb9bc42219c45d6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SEYDQ2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31bf7d2d4861fecda5b0ed62d36ccc4ea074c04434fb66bb96dc51af1e4d4bb. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SEYDQ1802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c89b787c329cab1a583a0fa74f21e21d4d33079d66f55cc8eb0b9fe5dbbe3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYDQ2001801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf495f456781a6d2adedd5f4d6944e708264abf947bce7739611be7e720cc034. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEYDQ2002401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3d1f04319e368bcaff06f2c5f8684996f4ac82c16f6c930109e3010370b09. 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/SEYDQ2003901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f433ad1895dc564898e508ae00b1df6b3037d0e82eba863f1897b11d0600828. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SEYDQ2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588581ee21f2220910581264e69cfd8caf93f290fd30a7df88bdb7e986d4a273. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEYDQ1900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf495f456781a6d2adedd5f4d6944e708264abf947bce7739611be7e720cc034. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEYDQ2002401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6680b28a1291e180d9093138f8e165a46ef3cbc46b33063a37cc1fa17b9e0ac. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SEYDQ2002301.
When David Frank Played On His Accordion
Don't You Ever Längta Hem (Vilse i Västernorrland)
Don't you ever längta hem? (Vilse i Västernorrland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf4f56b96da470d7f7a9c6284d37c727b292b0f9e0b74aaa10577b3b43d0a86. 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/SEYDQ2400101.
You´re The Most Beautiful Thing In This World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11cc9e4265054570e530a08e61acd6e31b4ba4a80c7dec53595fe7604668747. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYDQ2500201.