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 0x990acf54f5e2d4f775c0a94d2303384c172d6f4ff04a4c8ec9881f63aadfb6c8. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/469cbd0a-3c29-447e-9a5c-2cd5069f73d6.json and https://artists.proofprofile.net/proofs/artist/469cbd0a-3c29-447e-9a5c-2cd5069f73d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Todos Mis Amigos Trabajan en Call Centers
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 0xb9d899b870498ce88df3af9ecc18e6ce43d82b3da5e39c3a342059bda7dcd0b9. 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/USHM21406752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0ecd8c90d5f02aa76e96b1ba4aec3a79968b518503c6203fb12c10ceaa562a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM21406753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09f420db3c79850810cd44c4339726f8bae6a3443f19aaa9e863c35a0ecd844. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM21406754.
Amor Urbano en Tiempos de Alta Criminalidad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eea77991fb43ee27e7fad099de8f66728091f8eafb9589641c24dd54fe4e6c. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/USHM21406755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58879568f7b5dc36efcb3bb6ebe6f3ee4af2c37c1b0d6e877c6b4669b931e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM21406760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37896c9300a797e2fb4bdcc2f687c25c224ceddfc8f49035a892a78dbd961fee. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USHM21406761.
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 0x29037f755553dd2e47aab6f7bc7a8c53dd8cecc6c1a210f99ee49f050fd3201f. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USHM21406762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06791b120f564d83870f7322f50beecc6eae59dce78239bff602cfbd21aad5fb. 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/USHM21406736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bb219980da00041c9e2d15bc4696e43b00a1d67b1c1a199b1af557707a7fb0. 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/USHM21406739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a7321142d05ca521c5aaf8197f185ef73a47d9b6fe01c9784c02dd8fa5efb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM21406742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe231845771b70b694334e37a08eb0dc2cbbba5738f8eaa01a44364ac49c727d7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USHM21406744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ace122a6c4bb77306f942725fb16ee1f46d079153089347224fd538dced62e6. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USHM21406738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d348fa63bc42a0735885f8efecbdde57c1300ef54438f7b712f7d7a56f298f. 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/USHM21406746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36fcb9a3a54a051dd626544f73a8bd261e3f99678b4189d0423d22a7c21147d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USL4Q1839196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2c4e4c4c2a9dd6abbd232d7843175c4b48f02826498f4dacd78f05763814f5. 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/USCGH1408716.