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 0x0a6a30b7ae47b49c1a6a693b911f30b4d495e1bccc9c35628bb139dafc18146a. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18ce2499-93ba-4ef5-871f-9ada69e228c3.json and https://artists.proofprofile.net/proofs/artist/18ce2499-93ba-4ef5-871f-9ada69e228c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Riikka: Susien taajuuksilla (Riikka: In Tune With The Wolves)
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 0xc27f16339583b4c2dd35d7cfccfd6ca40096b351fbc10d144678f36ec522e058. 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/GBAAA0100791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886d6e84735a484c950e43d551d6649ebfedd1442d62e2a633696d2f77a06763. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBAAA0100792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f0ecf6a4ddc7a264ebf2d46472ef4927e1a5235a199f04ad2134b875a8b580. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBAAA0100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e891284adf855da52924264fd677c0f7c3af08a1817a38abfa4f6e199f05717. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBAAA0100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa980465a3d03099e1c588c46cc25b4d33247e79aef1c32ec12c5910e970999a. 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/GBAAA0100795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce1c22a6568a014111a233d46341680d0bc0e6518c2deb54bb308e5c23884ca. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBAAA0100796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772cdf4189dc821c1a069d70a634338e95c55dad26556a67c4f0ffc6eb8bb3bf. 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/GBAAA0100797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc57183dfaac1d39139909e719a3c7b35996422777354048f90d945b5af754. 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/GBAAA0100798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74711539896150e167ff46236ff580575635bc3cfa2246e5421ff596e806e48. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBAAA0100799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0ee2d5507e784224bfd34f3670477221cd206751ee444c7362f724a2ff1e3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBAAA0100800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c65dc90823958f78890dbfa12fe2a21a274bcf4370e029b755d8f2b72f728a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAAA0100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a33f0eb1c756cb97cb76cdbcb147b09ea0cc2827d3d830fcf71f7fa02026b4. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBAAA0100802.