thumb|right|Tobias Moe Thorstensen at CC Cowboys concert in Gjøvik thumb|right|Magnus Grønneberg in Parkenfestivalen in 2007 CC Cowboys is a Norwegian rock band from Fredrikstad. Their members are the
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 0x94daa78248eb259f09a5b8c183a468712d89db0a06cc6f7299ec79d6f5912d1f. 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/f8f50d21-6aa2-4e3c-aee7-c55ab5692f22.json and https://artists.proofprofile.net/proofs/artist/f8f50d21-6aa2-4e3c-aee7-c55ab5692f22.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 0x1dd6037c05244dfcb68892e792eaa3a72e6bd3be347b242aafccf8f0884ffb49. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAJR0700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb653dd2f8bf13cbe9b2f8def1a597d9cf3b3069b13b40db0bb006384064428. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAJR0700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fee5f56e5dffc5aa6577e8f1255e304009dfea457f5e747300b50b7313d17e. 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/NOAJR0700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc698720aca8e31c46a35f9f38b309429628ec2287640fc08553facef785cbdd4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAJR0700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf309457f0474c9641138addc99b0ea5160f93069de52010201ae346758c2d605. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAJR0700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0cf3cdf5ce8f1be9e35b4067ba204c100d6fde4445a38df62491fbeed096a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAJR0700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3defaf91ef09950751234c97a38b58f53df09e864b7f819c27ab79911c89f0a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAJR9206030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba57f8e1c9e084ae38c54bd0af0d7c00256a3694f004232deaccfcf3b3d66f6. 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/NOAJR9694010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd49a42b0aae4375a77a18526a873b5b86574cb95e0847fbc52137dee7a2e89. 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/NOAGJ2114501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53adacc241b13dc286f43aa00d9282716012bd094f4f9079b462254f3e85e3a. 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/NOAGJ2012301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f256859bd78954968528b4b46284f448c02e8787e0720ad8116c94873c33ed. 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/NOAGJ2012306.
Du som klemmer på mitt hjerte - 2020 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ee85e7127914c8e686dc895cfbc710c8464d2cbb03451cc4d49b782fbeffe. 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/NOAGW2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9c02d4caaff2c9508f84d9025ccee2acefbc0538f3b292ffa1178cd69a7937. 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/NOAGW2000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b59e83ff151ad68d18cf06ccb913568a9e3d06d260835b2901c0cd1b309b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAGW2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f30281b449447f20cae187fec5375d5a17521b57e3b4c1e3983fb016d089c. 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/NOAGW2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebf7d67ff9b46eac814ef8ff6792b98aec1836fd5ece89cac3d1a5fe33e5c11. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAGW2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66bbc6f332d891444df40ef90073295f219e60fb1468ef89dee02809b5b9d5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOAGW2000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab5d056bdac1b465d091c6f51a483d1cdc34c375f0159e418df20a28e5b2e24. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAGW2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca996f3b2b8caa84180ce108ed553f6078ac64ecff2c70ddd393596f0ead275e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAGW2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa4d498b9002718f64e244a598dfa115fe81b01b2dbf7282c40251d9f6b4a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAJR0700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9db007bed5b8bff91877e04d6b9f8bd1e745df2cd2881f7aec383f3c51e4eee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAGJ1732030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a69ee272eff8b236090b6824384eebeb0c28077e80bb2fa621a2cfce433507. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAGJ1614010.
Synder i sommersol (Backstage, Fredrikstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1394fecd5d4673d5085224a918d3e6374b7add6f81df72b4a04a453af7373f02. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOAGW1400087.