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 0x2289ad8869126ca5c3f9b57cdffee8cfac8264334dd907256bbf883a8c767053. 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/042ace75-89d6-4b30-99a5-513fe1cbfa37.json and https://artists.proofprofile.net/proofs/artist/042ace75-89d6-4b30-99a5-513fe1cbfa37.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 0xd3165a2073237a51a7a8ba5740345230f833388f0b2bf5ed7c2526f9cf3ab191. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCABG1205081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e08b5dd8b59c4d748e0af40eb2e6d7a6384cb03a89b584980f6386936d1e75. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCABG1205084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f28d14f1d3da5d74e7cd5130b1d5416eef303678b00a6a9c70ea0aa88df9f9e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCABH1278720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46cde3340ac79625114ea7d33893ff4c5068ae1ce0f1ba4fc458c7f1c00bba2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/CA6D21000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0908e62299812df4edccd08ec6e4f74c7ea473d872778c37c9daeb3c33728d05. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA6D21000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616df853132c576403b899415a40da1c635dd07a91b9786c25d4228cb134fffe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CA6D21000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483aa149b00157bad76a8885085975ed8c02c2e8358d603aac11207e11937a06. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CA6D21000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f429eb7d14939a1240ffe92ac43c81147cfaf880eb76924e294fbdb9960f90a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/TCABS1341041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df4e0d79ef8c05a319b3e6a143de71c1f6e16e85a439aa64ca8b2fca919e3e1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA6D21000359.
The Difference Between Us And The Aliens
The Difference Between Us and the Aliens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26347ec04c880dbd4d9106b0ca594b97442f30244f7c5d49f1f44c4356eb3aa8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/CA6D21600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96410b071afc5a1d391d45ef4f392022a82962824e6b92ef0adf883efe72bff5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CA6D21600138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5231b9129f6a601f2829aac5842dc68311492f80c28223fd72c5a9647d53c038. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CA6D21600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e34f200363afd5f43351ffdbdbaa24bf37d99bd31c73ed28eaddefa7b19726. 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/CA6D21900215.
You Gave a Lot and Now You Want It Back and Then Some
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0911ea9847c64f6cf9da42662803c9dbc0927496d7db5aabfc4ef879a53d76e2. 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/TCABB1189196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25cda939b42cd749f65c85abeca3bea03d6106ec661a6b38449980e6b5c5143. 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/TCABG1275627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146685bd57427f57daf1086da5e4b8965898a6e21d8b6b7c732d3c92fc4a8637. 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/TCABG1275690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91c51c37ec52bbca9b14a186ecf455e4edd662bd0aeedfd540ccc31246ab3a. 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/TCABE1206486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d418b48173e8431cdd1e7506cbb5155147ae4b0a4d76d67aa9d3613ae19f89. 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/TCABL1374358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd3973c5f8a2beda41654b2f3e1f34847dfbfb6706b464989fe49ac0485f65. 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/CA6D21100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e34f200363afd5f43351ffdbdbaa24bf37d99bd31c73ed28eaddefa7b19726. 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/CA6D21900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0c13030b1b67d245d7d95ad1d6a52b4c8af9069eb1b60a8f946d003bcd0367. 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/CA6D21500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4408ad4cf3a55e9bc903112cdd6dabf8800f087b37db7a95769e7750a1e6434. 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/CA6D21600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0908e62299812df4edccd08ec6e4f74c7ea473d872778c37c9daeb3c33728d05. 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/CA6D21000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7d5c0da299a9947318ed152b2127c873f4a11a3a6dc7a5ab7f6de0d83f8437. 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/CA6D21600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93db88d86fb43047095bf4ea432eb331f688538a987cf666cb0f9c5596facaa. 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/CA6D21600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17d35722b982c315a0c10ecb32bb7f97cd235b0b7de0c91f873ce6e61e65b9c. 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/CA6D21600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641286315e1f61da99735dedcab77936d2492bbf77c89cbf805fd0929e5793b8. 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/CA6D21600318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac2abbd2614b953d70fe6e5082a98a3a7d575a1996f9498d3652514529c40d0. 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/CA6D21600319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfaaecf18d38e9d08cff628f79ed218316554616f7d3adf7049e162fe20484c. 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/CA6D21600321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b822b5dd993b72b189e5a1cb64d90bcca4804223e009f78fe093ae03b390b7. 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/CA6D21600191.