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 0x202197a33be7cec368ba0e4be02135f6eb5f222a3eed0587b40ad09559272946. 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/96f60f31-e71c-47ed-93be-1c53fb06b19d.json and https://artists.proofprofile.net/proofs/artist/96f60f31-e71c-47ed-93be-1c53fb06b19d.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 0x1980328201b7f8f2f112229bc0e45bbea8ef44e9b346952a41b180697c723cc4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NOGTA9652110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c9f1932adcfaced016e0c954dfda930fe5acc47272dbe5a5be0e2095ee312. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NOGTA9552020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1069ce0ef76b516b7bf1b8e9984ad807a4bc62964f409dc04c53f9407718eca. 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/NOGTA9652120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc49ee35e13ddbccd4ee38e93d0510deb86dcc3368e4bf36756d75b1e1eca2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:57Z), 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/NOGTA9652140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb427ccfde5626fec557138bd4bee81ead8a44cbf395906d118395d5ea0e5aa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOGTA9652170.
Sanger fra Bare Egil By - Det noe svakere andrealbumet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df41871b38c6b6c8ccd9bae462ff5b01dac7fc4665fea27da07d0609d5d89b8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NOGTD1201040.
Heia Norge! Bare Egils fotballsanger volum 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e683ba7bb821c043a5b2d8c48e9c0b8b468dbe540d632e030ced3c4b38449. 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/NOGTD1407010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37cde9dda5418ad1d1bb3483f97ef2b0511b1ba01c2c20a7ba90c2d0f31ce2d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NOGTD1407070.
Faen i hælvete (feat. Ikke Bare Bare Egil Band Band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81a0a8709b937627e252420cef40518d0b745ab16b05ce4e46a412a749da357. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NOGTD1701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2620e32e4da910f1d20bc67816e8f2d5b16740caa2ee85963c206f39e5f91012. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:25:43Z), 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/NOGTD1606040.
Grisefest - 18 tvilsomme partylåter om fest, fyll, fanteri og forplantning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39097e51ccc318c2ece76a5062f463bdc08754d70f500eb82226bf8623112e4d. 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/NOX9X3300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1775be4920ec845df02f9d3b0f327c7f9e669f538aa4680bbf950fef2fa7fcff. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:58:53Z), 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/NOX9X3300203.
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