thumb|Machete/saw combo thumb|Mexican artisan Agustín Cruz Tinoco using a machete to carve wood thumb|Mexican machete, from Guerrero, 1970. bull horn handle, hand forged blade (hammer marks visible) t
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 0x62073c9faa68900eb1fd2dc7e2fb134fc7ce890a0c420ef928391a49e1e75ce6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37a61793-0bf2-4eaf-8373-f3f997efc78f.json and https://artists.proofprofile.net/proofs/artist/37a61793-0bf2-4eaf-8373-f3f997efc78f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BUD SPENCER - prod. Dade - Low Kidd - Salmo
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 0xb3f952b766f726e92ba19e5b15a0beef89ca7b2a0affb00e34527ca378eee020. 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/ITB001900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7eaacf15c41fe4b9fb3247ab30639c788e5fdd7823b2afa83d1a6d77f893b7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900353.
YOSHI (feat. Fabri Fibra) - prod. Strage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7c4dae2fe5b11d67accb7ee2d97ad4387dbdaf193a278b49b8141331e8716. 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/ITB001900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcae4e8a21819448374b995d4b4557ff16c13d697e5d133b53606140810f6c49. 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/ITB001900355.
MARYLEAN (feat. Marracash) - prod. Low Kidd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b49a64cce40301ec3679b45d543d4580eabc4109cfdb6ea464bb940bca908. 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/ITB001900356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9e14cb30fbacaf212fd536d0d7a011acb8426cadd8f223e748123c061d6bf2. 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/ITB001900357.
STAR WARS - prod. Young Miles - Crookers x Nic Sarno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56f8d7771004c1496030f92f62dd6128908a47ee0ae715485d37515b28dd5e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc7870662dba44db48d01dd02e81922f1e01e0a0de4a7c785f603723a63638. 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/ITB001900359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebee7ea25b1eee867549b542983022482f6a3b0b9851ce2c0d9275a1530d82. 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/ITB001900360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c307ffbf08e0bb88578eaa1af409923ce3e8b9c2510e5e91dd79f45fea6ae. 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/ITB001900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffda966a5088f8219dbaeda61bb355c97ce8ce06a0994c91f20231f2e92a1d0. 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/ITB001900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8988f528a07e84d7d99883e54b352ee561a9020d90a7f7ebaf5308d0609ad89. 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/ITB001900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aac87c486fd909c80e435d5ee0c888c064208287d2ee3bcca05e59d4a86525b. 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/ITB001900364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86272672801084d0e4424159fdbf52a8dd057ecb3bae34d74dedcd9b020dc0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900365.
ORANGE GULF (feat. Jack The Smoker) - prod. Salmo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8889dff046235df761cc5d8760fc59239d1ad633c1629326137a64094b585148. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbb509e91ab318a42cc7e4201a902a51ea920851100734ff8ec0918f26b124f. 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/ITB001900367.
MACHETE BO$$ (feat. Nitro) - prod. Kanesh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6610a5de669d33d33cfcc4b9da34e39a8887daed9e9e6152dd99437feadc20b. 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/ITB001900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137845d0a7940611ba259f50c8af819e7eb05b6a8c2a5020ebaf47a2f8084102. 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/ITB001900373.
YOSHI (feat. thasup, Fabri Fibra & Capo Plaza) [prod. Strage [Remix]]
YOSHI (feat. thasup, Fabri Fibra & Capo Plaza) - prod. Strage [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed0e8286d671b05c6e7ad478dbae4150807ee4db9903cb7859eda0eca9350af. 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/ITB001900462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c40c50a2a23efda8af1447f8c91b690da60fff0e05dc87df23353f509a1518. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ITB002100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8a44d68ce876f80ee0e306f2e763bf192fa1d707cd10e3b8804dc7c3ea1f0b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ITB002100893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316f32835798e8353745386692f3d9d52bbae544972054229c31ce8ed743f44f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITB002100894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ac77a2778dec39bb62a0c9f3a579aec1cdcc1f130312e76cf81ddd994271dd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITB002100897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c168caa84ef2ee69b9859283f93eaf649ee7359d4cf0ed8141fef333979d99e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITB002100900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ff1f62f59a96c85209d236681f2d148d2b31cbcffc70a1c16bb352cc8fad9. 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/ITB002100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f72c753a74f6285666417435e9a9fb2700c2bfa75836ce929b27cb529f42d. 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/ITB002200785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970a305f62a3707960537ba6596ffd1a1aeb4a2b68ec03f7235896c91271310e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ITB002200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a920b87cf7a9730533337664f71b87eb23a62b957c43dc7c537d0403120ab0e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITB002200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe890cd136f6f27fe55cf77a7f3ebaa6bda1d02c7d2bd96bcd9e41b49727b279e. 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/ITB002200788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbdbd8ed22960a57c2526c1c50c32f16562a4e66fbd2257dd5227e32c3b7842. 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/ITB002200789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc553b4f58e45265da9cf83c9cbbb26d5fdd9fae40eb9878776c9b8e17494bfa9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/ITB002200793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ad77760e81fd1c7691410724fe7b460c96116f00678592a63c861b62ce88dc. 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/IT0CF1500105.