Postgirobygget may refer to: Postgirobygget (building), a building in Oslo, Norway Postgirobygget (band), a Norwegian band
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 0xcbc3a32cd31ac31c7448527d20630c7e8fe31810766c92ac42b8cb7faf1020bb. 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/0a607a4c-0703-4981-baa1-d8fddf8156a0.json and https://artists.proofprofile.net/proofs/artist/0a607a4c-0703-4981-baa1-d8fddf8156a0.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 0x10057370d191e711bd8aab73aab8e2bdb3874925f270759a2f70eced71d07a2f. 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/NOUM72000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e183dab7f9d4cc93d9ea8a15d700caeec0669667e778e90d1556b33e831a89. 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/NOAJR2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c9802b6e9cc4ea5344769e61d2f88863df007713e5e4d27f697a6128e986b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOAFC0702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd45dec83bbe92de4f54dfafea9099c2746129037f293a7c0fad5be7197535. 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/NOAFC0702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec27e4a7bfb3514dc0efc595abaddc285c0a902dc0452a930f7d4839076f54. 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/NOAFC0702011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf78b32fcbb873cb755ad8efe6bfede22ecb00f9f8f178cc184a433b232bb53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOAFC0702040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596d8ddc908ab21c21e07f763429d050cb171ba01a188288eccdcd3c3b818a11. 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/NOAFC0702050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46bb7cce5d0ed23a01e144f39ca548d0041f11ed4993943b0da47f5098edca9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOAFC0702060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5367505a1da866c66f6e4917e6c6d7f1913e4ea42a0ce565514da9784145414. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NOAFC0702070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34297210b4233e85c61490a2faefa39d781404d6f4df6967b2c4d6a461dbd53c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOAFC0702090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690d586b168f61a4a40f963d9fcddf7132bc51bfe64402ed7b19a8aebe66ec1f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NOAFC0702080.
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 0x0038a37cb6dd70f2dc948ab099bfa33c2e123f2b4e8efbbcf63efd04920741f4. 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/NOAFE0702100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eeb913e05212e5b1d75d4343babf5347e3d77e43f1e4ecc73e1f77a517ecf4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NOAFC0702120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216aaea16cf28af2c92624f8af31282c2ccad94edb8c7d44dbe5d00fb93a3456. 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/NOGNA0301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4870629a9e3049f950d8b42a713c85c755ca4a5393806ab44e4ced0c16cc02a. 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/NOGNA9626010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad203655fd1052fd6473bb797833d178318cf5e13fdd5e495567d28bb04c78. 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/NOGNA9626030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60056f6b8692476c23f4071b5596da6aba0599d956e4789bb0c0432c01df347e. 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/NOGNA9626060.