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 0x3f5707cd7aaba3366bfede6265b91f64be95760d6a797b0766c5793bfc7871a1. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbd1b943-0212-4afd-b81a-70d5c7888094.json and https://artists.proofprofile.net/proofs/artist/fbd1b943-0212-4afd-b81a-70d5c7888094.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 0x003095d110f119b20f63e257a7af09286b3c045c58c8c9bca467d185479db9c8. 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/FIFDP6300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538c30321cdecabb398bb1a9be16c3f8ef8afcdf69993d954daf01afa838018e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIFMF6300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733da97ce9afa10ad08066aaa9fa268a6db208b896113738580c0c059f63a4c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFSC6302400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70224b7953d33dcd5e88cba3de3216e7458bbd1f8d45a1db801baf06b12b8e. 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/FIFSC6101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccedf885537f7b3de4d07a5064ec7632035e34481ae0bc319a440c5e70b9fa62. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIWMA0700933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1294ff65957c00f77067c834afa51768eb15aec99763db5a2d7c6a78f8b0302. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FIFMF1240809.
Jazziskelmän kultaiset vuodet 1956-1963 Vol 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33db7e5007d672aa9180583946ed5b5310c1ce758a68df9a5c5ff7166b490c9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIFMF1239299.
Jazziskelmän kultaiset vuodet 1956-1963 Vol 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe878139308496645ed636c46031d314b4e38f649c28650718b17653a95e9dc45. 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/FIFMF1241373.
Elvis Suomeksi - 250 ikimuistoista laulua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc306fddc4bdf675e9b277f16ff2d0cb8822ec7f4045a9d0c93aa452be13bad2f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIFMF1241470.
20 Suosikkia / Toiveiskelmiä 3 / Virran viemää
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1da9de025f42fe92d523f2b2294e12e91799293ed54ea361c00a410986f9f5a. 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/FIFDP6200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf894774b7a95bac489e889119c3286c92d035d20bb59351ec523bb72de9cc7ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIWMA0700944.
20 Suosikkia / Toiveiskelmiä 1 / Iloinen Amsterdam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a954d163595cc2a099a24b54c5a58e70414a9c9c4f359fd03ccfc95c820359. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FIFMF6300001.
Grand Prix 1963 - Suomen eurovisioiskelmiä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ce22d99125f8e1964fbca435bc79fe614bbbbd9c0acb2e45608765b415e563. 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/FIFMF6100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41d68e0b2f9f8cffac57f4492df017697781c2781a16c813ceba9ec399f00d. 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/FIFMF6200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eff62ba3c9f01e2301ff64ca48e48817f4dd36f42df95e21488d5b19bef8e9. 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/FIFMF6400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7b422138d54421d725c4c38f245857bece0d42bebb6a21253313688f6efa56. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIFLF8801200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464e447ecdc3b0d9cc68025be42ac9a6c7681e30e7217a28ac82c2383d311ab. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/FIFPS3700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44399a4284ab3b3e7f4e9f890ab6dbcc549b4bc2d489eca0cc4a6e12d3f188d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFPS3700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f65618bc6c3cb36828e616b849a80193e8f3e0a909d885e89ffdb1c9097cc. 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/FIFPS4000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc74a59b1e61a78bbb298840c79606632f8a00014a435fdebef08c2b5cfc86ce. 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/FIFMF1225195.
Nostalgia / 60-luku / Popmusiikin helmiä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ff72c3d1c6a16a9d89a2053c94b06dcfb1deba462453984ae35e010af2b3e7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIFDP6800003.
Tähtisarja - 30 Suosikkia / Humppafestivaalit
Unohtumattomat - Iskelmiä 50- ja 60-luvulta 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92aa027606cc257c4d1e799d2388ed17ce272b1e26b9a07adeb955faf3b2418. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFMF1225173.