The initials BRN may refer to: Bahrain, IOC country code Barisan Revolusi Nasional, an independence movement in Thailand Berne Airport, Switzerland, IATA airport code Brunei, ISO 3-letter country
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 0x1aa57323288d21b3ef65858b1d2a00b66f7d1b6a4e1e6c608375dbd0a4a004a9. 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/da213076-75fa-4fe8-bfd7-c8ee5162548d.json and https://artists.proofprofile.net/proofs/artist/da213076-75fa-4fe8-bfd7-c8ee5162548d.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 0xc1408320d1cc052fe477efddc335cbe754e45a8da5b21c315d87a7747202e50d. 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/BXM4K2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe86206597a8453baefa55d107dd65168d7e86fffd1cda6cdce046bd28749e1. 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/QZNJV2026370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e6ae36d72e89953e4a8914953177c69f54c2327227f319365962c28a0ab2f0. 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/BXIED2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c14a37dd304ba6930d57cfa41aaec1088c2b45cf96be028ca7f5798bb0edf4b. 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/BCML02100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bcca7e94b00add2e3a957b3680539f4e7adcfd0cb90dcd563bf31a12b90231. 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/GBKQU2472096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af65e60d94826f29e436da5fbf91d68ebd2049a226fded0a0f8aeb184cc6c4. 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/CA5KR2459887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a4af57986b781e09950095308aa5a57dabccded2d7a3e463ecdd929d90523d. 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/CA5KR2459888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d424ae108e8372e993c1d7b903f9a6d614f3423091bcfeebc9df70049e4691f. 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/NLRD52339200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11805641bfbe4ea4a37e3e6c18854d6268b4a86d9fb93cb6c85ffe5d230f768. 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/NLRD52339163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8bc02c707e65349b51ed2b2d69ad54cadf886916d7cfac521aca27afa7d529. 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/CA5KR2414723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfda015eeb609c6a0d6c81f9581bd2770c809db99cf5008cf716bd3299b66d7e. 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/QM24S2307552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f48b441dcb6578cb80e9fb3e57c92c893157e8135ca8dc2d6820de806c4e20. 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/QM24S2306752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d29e1aa1eb69b0d6fb72115a92b615169f10b8d6ca4d704c69dbc8c7169276. 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/BRUM72301265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450f411e2a6f2007f9be1f92b2ebb595159f4d203cd2a14157fa29b54acf0e88. 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/BRUM72300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bdd3f5f35fa77ecbcababfef67ba8b89c63501f354d51cb5571711a6f1f9d8. 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/GBWUL2342626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db81c9034b9e4cb58cb166601d9f3b8447de6da7b3d9d2c3cd50b8b2cb659df. 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/AUXN22310803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e579ddc14ced89ed5a15def9a6c4da5fe9319d907af561dab692f6889e16b0a. 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/AUXN22300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e8274b530a180e36acff5dc1bab932fcb95d6143647ab3dfb418af90cd441. 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/BKSHK2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea71de73f629517e206458f6dab5fc5cc32830619119abf5cf4095f37159464. 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/BXM4K2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc513ae297d2f8713413fa0cacd5276c419f74c836ca06800683cd8a444bf02f0. 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/DEZZ52170468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c2d456d253032cc3b1bf1f04f8f442423c86fec3771d007fa3a1712599455. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLZJ2276799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297aed7953aaac9ad4d508ab2d550e5037030fee4328992ec7656d721aa4d42. 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/CA5KR2207527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e6f59dcd676979bb7e8929b466930dad66008720ccfb75873382e0acc16741. 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/CA5KR0042970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f806e5d7fc1f0e3cac40b36e9e9d7b9d668dd4770a29b72abac9d5fc2f63d5. 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/BC1AU2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec1622a49207a224387a9c532cbe58268c7321e9e1b27198d0faa62273f42de. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBLPF6672860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c41cd52b59eee7fb73f0cfda6206070b7fff853c7b76c67b2d0aa6f6a96fa. 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/CA5KR2164368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7bb416c7c5582a37b0a297a390181927332c8ac1d30184a620d2ebaedc15a8. 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/USLZJ2113535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4ffcb5cc94351292152db9142d2203083ce26ff8a297ff3885d60577764af. 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/US83Z2040902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa608659b73a6b44950ef1587ce285d36a580671241ab4f39e45ea302195b7585. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZHZ42055405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a96b20f722aa4396f00acfe1ce614c970d2195d85ab6d236b8606227c90f74. 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/NLRD52426103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17ea335e596910413d8d8e8701d0d38ee33a98264577497e84ef7c40ca64384. 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/QT47L2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8bc02c707e65349b51ed2b2d69ad54cadf886916d7cfac521aca27afa7d529. 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/CA5KR2414723.