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 0x0bab31249b25ff7651ef78499d676e9bead561ba60601428c1362f49421833fa. 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/3ec4eb9d-4798-4115-972f-6e889551f286.json and https://artists.proofprofile.net/proofs/artist/3ec4eb9d-4798-4115-972f-6e889551f286.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 0x2dff22c85e681f42580d4c0c4ddca6166577be9673d7dd1424392cd159946e62. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ES5701800240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670d7fd29cbb0552655bd39d220a2206a1abc2140bf7357c5f2cdbfa33a57dd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5700600436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a90aacf746de842ac26412bf7cf8973cd1c791a3b31e486655274a00c3e42e. 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/ES5700803004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba288625f5b4536465a71af60ef4f2719a5879eaa70af1a511bfd8d3c82f69. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ES5700803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bfe70891df5183f80e009b97f0585fb6b44186f3fb2b2add58dbc5c232a8d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5700803005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e54c9b61cebe3b830618fae91be38adc6e814c5cc964b14f2ebf24ac99991. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5151001574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1e09518a13a0536083a476da7e8783a8667ad153bf8f83234f01e2129af989. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5151001575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6239d617a35a529f42119326092ae56c25c591d1380dacf367014dce7be7dc3. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:58Z), 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/ES5151001580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77ddb9be1e89d9616661a796aa914eaab0cefc5b65421e32be234718bf82dff. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ES5151001577.
El hombre que olvidó su nombre (feat. Rebeca Jimenez, Miss Caffeina & David Otero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cddd8bb5042d8c1e0ebf1ab10970dff3b7d9ef8a7f48cb1cefb9fb2d0c3deba. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5151300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bf432fd378cb79ba2c06b2fdfe9ca11582c3a7ee10ec0589867d9396018bef. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ES5151300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be4bea2dac19818261cdc44a16c7eb5e76775fddb03a7e3fb3fbc34f412973. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES71G1857046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da776b622b53394c1e39ae87b6d005a5b7dff7d34809bdf7c5ac0408f1eb4db. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:48Z), 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/ES71G1857047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed62138de11694cda72ec2f5867804a842a27fa76aa087284210be737c0e6cf0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES71G1857054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eca6e4c04b60fb234e2c2e47bdce3f460e4a2768ccbeb2250d4f2b3343aa506. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:58Z), 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/ES5152301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd4229c27a98691ffc6fc083dbbfc7f1013367c932f5a37153295d2f9da502. 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/ES5152400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671bbd08f1fdcd6afb261d6c2940829d214d322127111a9cbfff044a17c68cc2. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:10:18Z), 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/ES5701800233.