Saltillo () is the capital and largest city of the northeastern Mexican state of Coahuila and is also the municipal seat of the municipality of the same name. As of a 2020 census, Saltillo had a popul
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 0x42e28d5eb29054577cb44fb4f3cc1eef9a72d86513d1c27aef6c70da46f74bd9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea5a6343-f734-4764-bfbd-eb8657083809.json and https://artists.proofprofile.net/proofs/artist/ea5a6343-f734-4764-bfbd-eb8657083809.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 0x417ac2c10f114a80b30b0e6d6d9df495240e19c910bb00a692157222d341e37c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:16Z), 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/CAAD21110888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5c41846cfa8b05f6650d9e118ab8fe31cad6d9714f49c66a76c037cb9da859. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/CAAD21110890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b841c10a25a81f14d5af50ef4ece39354a04a0e3e5d7bbcd9d77f62f4e8d651. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CAAD21110891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91bd0f408bf38537302aa7bfb82d8df4ef3af7656ed8c9778426af18f693d2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CAAD21110893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014b03cbb653961024b5e86eca58efe0be49a4099f479482cd5ca1dec8c0d62c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:43:44Z), 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/CAAD21110894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812aeb13c9bd69cc876278d9884ab9db21c0f635e736e3d7a0cd4e36a60e8a9. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/CAAD21110895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56304e9c3b68ddbdfe5ca4be0f42e83888e8f578dc37a0d56363caf03885e97. 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/CAAD21110896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330075342c323b1da356fc74bfc8ed11f9c451bb46655ea36113d9e015872795. 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/CAAD21110897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d6d5e7f5de507aeb9c0215333c82864cafcfb84d8dc02a313f7e8ed0291c5c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:21:05Z), 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/CAAD21200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e990e2a200f90f1cae281f388c87f44853eee29a0e8bfbceb91710ac4c0a85b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAAD21200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8d816f0d953822735628757078700831ab06f4e6aa8d724d94e9a5f3c2ff7a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAAD21200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f2da85ca43c674ec816363c243324dec82d3df996bb716b19afb0cd8d49d9a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:27Z), 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/CAAD21200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ccfa8ae30dfc80ecbdb153f499ec4bd516d9136caf1b19e61870782523fe00. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:47Z), 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/CAAD21200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59d6b802100e4250077a2d9a214745dd5eceb965ee8c79fc421eba0c10a145. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAAD21200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d343b1f911a44e4bbfc3dca7fab52e099c4665e2f4f5c022b68127520fdf077. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CAAD21200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618f2a2ce5da7c444abb3878d033a97c29c07fbb929ee2fa221e49ca5b7aba60. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAAD21200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b97256e020294b0ea887d03a4e80d4912a72fbf08b05749da77eb873f96ea6f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CAAD21200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a476bcaee594e179334835ff6334f795b7af295cebd61ce83bd9355664733d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TX1797842.