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 0x4e7af3b8f9d343e84589742ce28f7977c8ae9fab1ae53dae3611b6449661e879. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c330f6cd-2b46-4cf6-8da3-c8bd9ee0b194.json and https://artists.proofprofile.net/proofs/artist/c330f6cd-2b46-4cf6-8da3-c8bd9ee0b194.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 0x0311b38f3888437b4c3481d98621d474760fbc9087a660d7f679414c5ca812dd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIFMF7600600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977371aed410a8ac68b684a070b4a14708764469f11e9a7e40e69432ebd8f23a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:58Z), 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/FIFMF7700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb253f774c08900ec5142ee8104887478794194a833edbdaee7e70e306d2779. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FIFMF7700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d26000ac414b5aeb3dd7fd9dc7e2aec85a2e899eee5153762f8cefe2ed92a9. 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/FIFMF7900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb701dacd4838a4464e43e3486a64f69ec9463e256fc64b10b91980c55416aa80. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/FIFMF7800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1335a4047f3f9c0585fbcc4c488a0c9436746756347c154c10b6f263662494. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FIBAR1500842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eae0f6c29c830fc6ed1e31f2efa94c6cc1983a61a025053572f2d946461d1c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FIBBA9200204.
20 Suosikkia / Mä mistä löytäisin sen laulun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311b38f3888437b4c3481d98621d474760fbc9087a660d7f679414c5ca812dd. 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/FIFMF7600600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4687f75305295f6d49dd66cd4379b2d0e71b6fdee561e618bb8963e1859108. 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/FIFMF7700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b8026dd811d79ebf5858b7282782b2f960338a77c1720dd18a4837bcb5069. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIFMF7600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aa33c6eae200dcd3bb12d1bc657d14be005ac6425fdc67a71e884a119c0273. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIFMF7700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b890b9824e2a3db066c548f3a5f088a778b0bafa6bd0872bce5fc237445665. 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/FIFMF7700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ae9099cea977a81621ce98ef5531273b979dd8363b1d1f2f9007eed3e865d. 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/FIFMF7600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d26000ac414b5aeb3dd7fd9dc7e2aec85a2e899eee5153762f8cefe2ed92a9. 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/FIFMF7900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f129a3a95cbff15f7fa9ca9dfc6a590c4213f4055b6c778ec2f2a6e1a7a5b60. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIFMF8000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b890b9824e2a3db066c548f3a5f088a778b0bafa6bd0872bce5fc237445665. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIFMF7700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b890b9824e2a3db066c548f3a5f088a778b0bafa6bd0872bce5fc237445665. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FIFMF7700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aa33c6eae200dcd3bb12d1bc657d14be005ac6425fdc67a71e884a119c0273. 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/FIFMF7700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aa33c6eae200dcd3bb12d1bc657d14be005ac6425fdc67a71e884a119c0273. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIFMF7700013.