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 0xbdd812c777544d99bdbf54b864348a1938d0c285f7539db092baac2f60bd8f19. 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/cb6c3db1-acab-4390-9479-edb82bb19d2a.json and https://artists.proofprofile.net/proofs/artist/cb6c3db1-acab-4390-9479-edb82bb19d2a.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 0x62c3c44566ded4e8a21dcdd427d4f0317c96649a1eafadee6ca33361242f0ea7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:49:54Z), 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/FRUM72202611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86422863d1952fcb7379e65a09fb2721f90106eff12d2ca840ccd23669925a58. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/FRUM72300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb894fcb37eda82ea123a0f7b2ec09578c2a2c71bb2c1660dc3c8dfef117cb8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:01Z), 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/FRUM72301673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203409784c9fd1b250d2a256b6748faa3791e3d194ba45583a0b4b9cda0f1fbb. 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/FRUM72302066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9659f723a29cea897d92791d8e26b3ddc9ffb6caefac3d4067afbd2bfeab9e76. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRUM72400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa960e5acbd45355e38b9e925a8dc120cf46932be760eacbcde0a6c5307afaf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRUM72400617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4518098525ab6b260c9c129d80adb3d194e41798ae17090a93f00329985a3e75. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRUM72500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed054e014a1c27432739891c2613fc7a1d2aab01c89140cb0dd743a2ec9d1f32. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM72401889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3118f6123145f6feb0b466065c7eec8c621c71e1b7c27fa659767b383878f13. 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/FRUM72400993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26998972010ee4d435dfa4fca8a3f8c39a16b4c011a237895c476a7b3390b812. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM72500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e1668f7132655aba3347a858e14e9a5444d79e3bf7a4696b53aec1fc0e0016. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRUM72400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914327dd097fa1251701bf2a8f52d7cd3954590a2d80aadb7caf177cb1a34a3c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRUM72500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9659f723a29cea897d92791d8e26b3ddc9ffb6caefac3d4067afbd2bfeab9e76. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRUM72400295.