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 0xfb660c5adc4d0d1804e9734b70ca861b07cdf40a2dca2621379f80130d56346a. 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/e793fba6-cdb5-4785-a8d9-87cce4765fc0.json and https://artists.proofprofile.net/proofs/artist/e793fba6-cdb5-4785-a8d9-87cce4765fc0.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 0xff4d799ea656568ed6456efdfb09cb566069dffc63ed73928831840e397ae648. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA012277576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd146b39204d7db710c52782bab798b24c39220e23a236abc6a68c18908908db. 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/ESA012277605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ee54baf9428850ddae4d9e0efbc65d1337aed9a584faadcbce472318ea2bc7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:02:30Z), 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/ESA012277612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f301e454ac1bd600c5f96aa1901a62df22d2745f0cbe60cfc716752ab5b908. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:40Z), 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/ESA012277614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51fa3ca126cda5956fd69320e5f040f2f07255b1bca0ea581c9142b72801fe9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZXLZ2312874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde638b38a41b5cc48ccd01360887360b80de6c1d6c4149c782846be617963e3. 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/TCAEF1928871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5285af2389840258e8ec799767adf1660a1d4e64c8abb4f7d59ed312257943e1. 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/SEXZC1101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fa3e6dd8bf27c6fed22ddf5ff39893392d049eda499748f48fb5c466243763. 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/SEBGA1500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d9095d2bf75a6388bea1103cfddb9889010972600eb4e916d9fc60f893a3b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEUM71201244.
Slå dig för bröstet (feat. Nimo, Fille, Näääk & Pauline)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69add96d81e65ce0b4dc78cced90d747c828b5f2cef39d2ccd8ae8865f551329. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYOK1301368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232e86b872f03f978c44a98187b1b707073946673778e6ebb672a501ebef2f2. 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/SEVJH1400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cfebe92648cd47498e50841751fdaed7874ab744f6a86707b92da3c930f82d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEVQF0900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c335838f7f61b09fb42d66a84a588651fe8da6e7a2d47a35134e1071f934c0b. 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/SEUM71301366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290024937b0265e168299cb7b4349575927d254b71d9b286b946e5b616df68cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEUM71301657.
Soptippsvärld (feat. Fille & Freddie Wadling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a59662b20ae0437a4dd1e4ea4e6a2d977973e2865bf32c4bd7d08c34ccc50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEUM70701152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28596e319e194c2d71c0a157fd879ceb3b7df2f45d4ab0a98e06c1e1453e24b. 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/SEXZC1101006.
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 0xad0d5d4d76eb389aec0cbb9ff4a0628e14ff76aaf3d0f4936dc1a7d88b55a177. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEUM71201646.