NBS may refer to: Business National Bank of Samoa National Bank of Serbia National Bank of Slovakia National Book Store, in the Philippines Nationwide Building Society, UK NBS (Natal Building S
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 0xecca1c0f886d91b6f960344e54a080b1449f4e7b5cd159957eda35b9d7441a61. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eceeecc3-1706-459b-b82f-782187d986fb.json and https://artists.proofprofile.net/proofs/artist/eceeecc3-1706-459b-b82f-782187d986fb.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 0xe4d2297d5487e8170ca857f8cfb239114ff83d1d5211fc014832dab001dffc88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUB161113094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068b0f59f6fa8c2a9c73905d4ceab1a926fe296e6c50fd1c25c21c490f2828e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUB161113095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6407526e079ad3d946b86d767390d2f1c39f8f4a2cb66beadca0647c3a3a2f0b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HUB161113096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94b60178814036d865a9d177b6f57a1e16110a734b78e00208c915584abb37c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/HUB161113097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd603b9438c390583feabf7c7392fb45b606e572afd593e607b414df4bff369. 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/HUB161113098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba2006c0a55172c5cabf8b3775a9000e82473a02510c30c9c6286f0aa685a64. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HUB161113099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c88807f95563a19a403099f10bb4dfa249d1ff8a32ddde12917ac3d60739bd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUB161113100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34484ad37bdb2974c38ee75e4d1fe28148e962aa305b2aa360a958d397f87f81. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/HUB161113101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9636dc7c4ef455440ec8e15e5c03d8746baaea5109d6eba116b57128df465c9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/HUB161113102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b54b05d7e5014b9ee4cf8ba6695888a5fa870d96a897efb0095466933df47b. 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/HUB161113103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1035991d292eced205e90e775bcc5da82b0893a523cd6f5e23125279d5b1666. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/HUB161113104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c745f801c9b6cb266b1870fcb07fe716be3754917babddba458a839056ae21. 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/HUB161113105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01713e1bac1aa278cb769909114c74c248011a66b131c49cc83f5b9f253d5a54. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/HUB161113106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76a2f021d4dc2b34a3ad852aa8c551030787d23ee73afd8f75dfddd187e8c3. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/HUB161113107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcc94abdf227eccf9b397eecb2c5070d7b84fd63a5aae8364ba03743db235b6. 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/HUB161113108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388d6071c9f77d77b5bd8b2cbaeabfb8aeb9199f23f4e24bdcc577ffe2bb5de5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HUB161113109.