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 0xfa26b2c6144bdcc79f410df723d1f31f808713615f41e712cf2cd552532830ae. 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/8f929485-1646-4220-9c3f-eebaabe36d18.json and https://artists.proofprofile.net/proofs/artist/8f929485-1646-4220-9c3f-eebaabe36d18.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 0x85197b0dbf62cb73e3e6fb984cc18324294bfe383d6153ee05aa7d74b8269448. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBCKG0701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf52208d4f3e0b3188e35dc2615cd5e1a1e1da18c7859dcdf0733f95e657edb4. 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/GBCKG0701041.
Ufaratstah - Vehar eineinu - Tzena Tzena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498799d90d321aea5321542da69df6917d1432a4617484d6e4a21b482f5bac19. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBCKG0701046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af99252f6b7bbbc74e757a5eb886b6bde73216bb13fd9954d0590d1277af53c. 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/GBCKG0701047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56791d808f3c8b038b9dd9810ad548ac5c397e7e0abb02040b31a732e49bb5b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBCKG0701049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90c68a58aa2b2db9d695ecba18935488ca57bf789a8a16c840ba048c4d5e43a. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/GBCKG0701050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe739e5737fcf3bf78a87e415d502b43a3374de60a0df048ce96d1f356a0bbe93. 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/GBCKG0701052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabea5927d62726ae61afe1688c7a5a9e7ea6189b81ec2e3f41e3cb98335c6cd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GB7UB0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935114898e0933ef95892623dd8d6e0b053e530a7e6c561828f5a0c094b378ee. 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/GB7UB0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ae714670d7977b13393a86597235ab61e7449a13854e8e8047795e0fbb1631. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB7UB0900015.