Three Days Grace is a Canadian rock band formed in Norwood, Ontario, in 1992 originally as Groundswell. Groundswell played in various local Norwood backyard parties and area establishments before disb
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 0x925c386e6c0a06376d53821c974dfd11c48b7449ebf0b1f1a817e30eb2719495. 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/94005fe4-5de3-4f79-91e8-6160d24e40e0.json and https://artists.proofprofile.net/proofs/artist/94005fe4-5de3-4f79-91e8-6160d24e40e0.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 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 0xd2fd638fe04060c9edc6389083ac577db5af349605c9020e149be950bd124e64. 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/USJI10600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeba8e536402d213404b6689740ab66ac6195e06452bb99f6a6f153a837b894e. 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/USJI10600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1651a72e163105373de7a7a1c8fb3daaa1befe02d9ad978a498756e6802bb81. 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/USJI10600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aaffd54634b74c54fec6412f296a8f6bc91b5ad898d1a5050e2e0d64facc27. 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/USJI10600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5852aa306dae51efcb06fb6c070274729382de103829030b9417c861bbfd9902. 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/USJI10600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64462235eb19b19519bdccc102adfa7fd2d0fad557fb0b595b5946cf5eb7cbd7. 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/USJI10600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3442bde6602b14b8abaddf7d5ccd9c56cc8bafe160388f74f8a3cbaad4dabeda. 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/USJI10600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73ce65a21d3165258cbdfeb44735a189145e2939a09f6ba193a8e63fbb940b7. 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/USJI10600157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc58f4fb2a601eb7539d44e9eb447201a57098418f9d36485f4e76e1952ed5. 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/USJI10600160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16d33fb673f2682dec29eed968d7c19476cee0b87e5848406e12fe2ebd6e18c. 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/USJI10600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0405818f64e026fb42094774ba6fc30d1083e22c34171cbb4532b32c88c7354b. 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/USJI10600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c8ee82075fab0da159fef3c3513514f7e5c635b04a714837466de7897d602. 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/USJI10600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a62dd28f02c9c74c2d4280476f4a74b5c18038badd52d4b73f49dc85c1058. 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/USRC11500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053353717b2b476fc5ab7263869e8e6deede91be2312c5e36a6a9e84819df900. 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/USJI10900480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaef6526de3174fc5080a6613815661b210f75c2260883d15a8a646533411ef. 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/USJI10300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37a4ef989c95abc56c5e6b23755ef31f39208a55e5c86aa0e4d04e0d5af112. 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/USJI10300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b044b1a4b38ca08f9de18c4fe02d642fcf792d80586db9b211310197b8f8980. 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/USRC11602610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b70f432dd61c8a9c054e997944d3cfc4a74bd3e9f652e4c32991aebc24c5a7. 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/USRC11200825.