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 0x733f7bf5de0968196b0e41f7aa51f4136e00f3aba9a7c3ff2d1edbc7d5e918ee. 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/22a3dab5-bd02-4ce6-b3f1-795971b51fbd.json and https://artists.proofprofile.net/proofs/artist/22a3dab5-bd02-4ce6-b3f1-795971b51fbd.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 0x486e291ee43290383604af36f34f7190f91ecd38a0c2a7e82e13fb42a7a53ce3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SEVSZ2001201.
Konfirmationspresenten / Lycka till med nästa kille
Konfirmationspresenten (Jag vill ha en synth farsan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd82e7b27183a8cef200b8074e733225883d2e9b04b402df35029652eb0406. 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/SEVSZ2001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34a7d80af67e40df21d4010f763e1e1bbcfb91da5136c725558eabadc01d94. 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/SEVSZ2001204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5ad4852782d6fed32219853487fcc7e4e547bea2f77919cff13e373e6bb2fa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEVSZ2001205.
Pessimistkonsulten (Det går åt helvete i alla fall)
Hon fick min Cadillac (Jag fick hennes hund)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306cc3120e6292905438ef04adac8ee1e75a77bc83072daa04be945fcb90695. 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/SEVSZ2001207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352484ed84cf37e128a99b546065fb1422e0e1dc3bc6ad7920a6728047a54c8. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/SEVSZ2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e45a98f3556bbbfbf148c076383bb572333b6d11a515aa9d9031cf14c45968. 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/SEVSZ2200602.
Tystnar i luren - EPA Remix (Dansbandsrave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78787797811b9f526608bcfcfb5f7543fc3d8b53fdab163997ecf0d37daaf287. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEVSZ2200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013895fd5e41438bc3a9f835b23eac9cbdb81765c2e5e852615dd29f541f781. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEVSZ2200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba49249a71778bccbb7ec1d61bbac298378c96a55434166c03eb804fb3d20ea. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/SEVSZ2200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a47a3b41c70c5ecf130d93b0b6c57a3b5cda3fd184c7c1ba5852bad1dd2a7d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SEVSZ2300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dfbc11f46ef5c3b115655557b368cbabaeed34b9d9f4bb7df1de2d9f83e7c3. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/SEVSZ2100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17ba07eb0f1fa0e4eacc02a86817cd3e89ffcb272321c4781c5bd500c34892b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SEVSZ2200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326da8140ac4254e57206f0f7a485f71559bf5c669b653f6d582cde792049dff. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEVSZ2100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34a7d80af67e40df21d4010f763e1e1bbcfb91da5136c725558eabadc01d94. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEVSZ2001204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab619311036673dc720e994e09c1bad2daae0fa24ba574594eb1b95feb9d5a43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEVSZ2200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5ad4852782d6fed32219853487fcc7e4e547bea2f77919cff13e373e6bb2fa. 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/SEVSZ2001205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a205418147443f7ab663c05c7ca19da2b0388916805152738ce7359b5e2e3f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SEVSZ2200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486e291ee43290383604af36f34f7190f91ecd38a0c2a7e82e13fb42a7a53ce3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEVSZ2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd82e7b27183a8cef200b8074e733225883d2e9b04b402df35029652eb0406. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SEVSZ2001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caeed48e38826a500e80399f04ad6f53ba524fdaee1d62e5ec0c6b635541884. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEVSZ2001203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013895fd5e41438bc3a9f835b23eac9cbdb81765c2e5e852615dd29f541f781. 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/SEVSZ2200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306cc3120e6292905438ef04adac8ee1e75a77bc83072daa04be945fcb90695. 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/SEVSZ2001207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352484ed84cf37e128a99b546065fb1422e0e1dc3bc6ad7920a6728047a54c8. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SEVSZ2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda45ef7029a70f886e49aa61fab89a47b3a80c3b6736b116679b669292da9cc1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEVSZ2100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4284f4dbd261bbd8b4ac67ace8afed9e229e376cea9ad39d7b7e0c6c449e8bc9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SEVSZ2200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba49249a71778bccbb7ec1d61bbac298378c96a55434166c03eb804fb3d20ea. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEVSZ2200609.
Håkan medley - En jävla hitkavalkad: Din tid kommer / Känn ingen sorg för mig Göteborg / Det kommer aldrig va' över för mig / Kom igen Lena! / En vän med en bil / Valborg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9799b11d531f88bede42be179c59d1559b66e8302970d7812ade92224170c. 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/SEVSZ2303201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf480e72101377a29c83fc95e75d3c653abfda36c86909193f480a3d4732910c5. 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/SEVSZ2303501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db107edc34695172debd022e7f8a224ac102db7ec74fbe1fcdef59801237c34. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEVSZ2304301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815546545b04a6465a641fe9647601c18dea0ef3cb646d1e11f224b9866f92a6. 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/SE5XG2419025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c3888229d90ba57647baae00c90eccc10a50a28b01fa235eba8d6f856be6dd. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/SEVSZ2100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705cc5ade8ac28d1ae1c05173559f2143564d22df29f4eaac99cb108498f9e76. 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/SEVSZ2100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34a7d80af67e40df21d4010f763e1e1bbcfb91da5136c725558eabadc01d94. 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/SEVSZ2001204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78787797811b9f526608bcfcfb5f7543fc3d8b53fdab163997ecf0d37daaf287. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEVSZ2200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d862cdc9514209f35fe7b0159e6aee48a61551713cb0a2a2ddacd07a6c5b29. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US38Y2426501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8a78422025e337c1e73c01659cf29a9ca8c5298d86cda75a271b0529e130ea. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SEVSZ2303301.