A&G, AG, Ag or ag may refer to Businesses and organizations A&G Railroad, the former Abbeville–Grimes Railway Action Group (Nigeria), a political party during the Nigerian First Republic Aktieng
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 0x4abdfedc360aa45832517e43ef1f7565a4d2f7d02bf19534e0f08f57fb2acfbb. 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/de94672a-a11a-4ee8-87cf-a26fb76b2e99.json and https://artists.proofprofile.net/proofs/artist/de94672a-a11a-4ee8-87cf-a26fb76b2e99.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 0x51c2265c31f1e31c0f803c36d5c2363b9aeb94499c23fe1a9b95bb8a8ba7b0db. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZTAS2147892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f88425b5fd52777bda9c0ea50ad716185cb010699215f98252af0bfea41898. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAS2147895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaced22f12bf6a4d1a8a49a24eb4716a8686075a49fc5d1f90473ffa31a0d1b23. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAS2147898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf34ae0e621e4b30c15eb67027ea74a3058debb7f345261067b01107a486ada9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZTAS2147899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f71e99785f446bcd605e24d9f407ebe51e738eda0017abd5db0ad8d9dc7b36. 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/QZDA62290015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc509ff0ebcfa1ddced53701cccb1dd73b24c05a88b9b50ee2bf55f4d17f8a6ea. 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/PLI360332400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79cbc4443b339598761ed14b58b288a1b877c89e624027950006ea596262641. 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/PLI367761590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bb09f454cfcb1971e6cd488a62b15ebe82b858aec971a9cd0eae151e5de298. 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/PL2DY2400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722048b949d2fc0736539eb3777d332a848a200d7b3e3e78d7c73cfff4781831. 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/PLUM72400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e683ea96fe22419dfce6725a76640934b049327c8905b005c9f5f2e6848b4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLUM72500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99982c6335ec18b1d924855deee902d22a98b6b705cb2592d135ac3f347ac550. 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/PLI360992701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4229bff50cc88d49b405ffeea8b3dd2841c576375328dd6b66e4c48079f5575. 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/PLI368457800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4229bff50cc88d49b405ffeea8b3dd2841c576375328dd6b66e4c48079f5575. 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/PLI368457800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f9d20bbdf87f718a1c5926502cf22bf43b0844e7a2f0dde6713774d23fb75. 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/MYMB22200781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3300dfc7d7609a9fcaf6895ca88ba2d8bf67125e354cd312b7df556fa8e5c7. 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/PLA552400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3300dfc7d7609a9fcaf6895ca88ba2d8bf67125e354cd312b7df556fa8e5c7. 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/PLA552400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0fd1f0794387699adc6e28d6a4fa7e7ba03af6634571fe14adfd56bb10d6c8. 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/PLC062407390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d528dac792d2cdf193cdb5b228ab1d874cf5e3a6f47663869c9bdff875c0205. 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/PLI366103160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725fc99e1ca2b723017f663d278951e11189915605131ec5c66c0ef26e90321. 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/PLA552300106.