NTG may refer to: A common abbreviation for Northern Territory Government Nitroglycerin, a chemical used in demolition as dynamite and in medicine as a vasodilator Methylnitronitrosoguanidine, a carc
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 0x379b680ab9be7461e96b59e1ef7eabccf6a68f4a1e56781ea11e5da26ea8dbd9. 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/16e17c67-e164-46eb-9043-afb6159b9362.json and https://artists.proofprofile.net/proofs/artist/16e17c67-e164-46eb-9043-afb6159b9362.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 0x8f02b0803ae6c7e739db2056cbafdd51f7ad9c35e8a1fdc9472cb44bb240bffb. 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/QZWDD2490596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4975c86344322710c6e3885a857530a215fe359c86bd5cf3bd6cbace64349c16. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB22347674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec2de8cee7381cdf21fb1f9c97e1ec9fc29d172dbf55f9c41a88ba3cc9ebfb6. 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/QZ5AB2438848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9099ff80929c643c3db647d1196a019689712a2ea654a832c3389e063830df9b. 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/QZ5AB2493023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2f869ffff7e5bb55392f781f708531e0605db9b6fdb2029ae30f7bec0243c. 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/TCAHN2378283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30cd6d753ea0f51a65aceb8825ed199bbd698f3f334904310f1d0cf6ad48c54. 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/QMBZ92484060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf554b0592067c2c9fa998b8a5b4da9a43df3c47bc406678813e20d16244315. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAHL2332806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe7e05a393f8e07e68a6e0e6d8bb4b451d8819a7d4bc5a629b3646479f2021. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZLQU2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d33f81e6cd2029ea0bb4b7b31ecf3eed5784618ebcb85ba1e3197f5734bf59. 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/QZKDT2400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a7cd795473ee2f50aeba0b49787e8a0c3cbaef383a869695e821bdabbbc88. 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/QZ5FN2418333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc467c8cc1e68439f53cbe55371c900edf485fdb869b32eb603eb9882e727a16e. 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/TCAHF2332458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d77daa7c642bfdb3e9ad36606591e2c2c074e1b43486149066d2b979d38bc5. 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/TCAIN2480377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c2deca9f17658176186deb0a5c33e1a6d9724b327fcdd8d727269ae1a89cf9. 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/USWL12402356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1decca19c2ecee79d7bee28bd03ac9b873a79ffee6ab50fc8cb541c27f6be3c3. 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/QMFMF2450883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09668268782b253f305b08abf6c3441b591b6c27b67a0d81ea458cdb108886c1. 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/TCAJE2571307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5395d3524bbb64969f51de69783ac4c354cea54d63276ea639b168f440bec0bf. 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/QM7282477488.