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 0x9ee12f31d524713f205818224ecf61f598744204ad1c2c7ade95eed89560a6cf. 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/d278a712-f971-4c86-b89d-cc2128d6c1fa.json and https://artists.proofprofile.net/proofs/artist/d278a712-f971-4c86-b89d-cc2128d6c1fa.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 0x0f1de0d7ef9889a0da63d9a61dc74bf71fd0df31f5794f6ea5efc6ccd5b448b4. 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/USCGJ1932669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62391a5ddf14cfa5a2740f3b9e77617cc94c4f86bf2a1209912fbc87201992. 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/USCGJ1932670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcd2f5072c1f4d87fe41e93a0629e3c7d6ad8fdc9acab1b051b7ba04650abb4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USCGJ1932671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f45d9ac2952b851d3ede4a9185308fa96200cacc991c6778fb9b7c0d8ffc148. 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/USCGJ1932672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94308702b1f18187dabddc15b6f4c678fcb2e7a4bed87ddc2404c67005c75260. 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/USCGJ1932673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8272d0aa2743ed61a602bd864200f8c37cf36c82504a01d3614fd5848c6baccc. 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/USCGJ1932674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57872f73f8c21d5e334491fb323b8b556deae1e6e7b7ff625ecfc6c5fae4b9be. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USL4R0768177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af7f237a01927316080255d03f364e56f7f2ea86d78734ceac3a26649f903c9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USL4R0768180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8749d79083af3e78f115ab47a4e073a75a11db1b98fe31ff6e09a3df894faa7b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USL4R0768181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a5987e56debc45fcf868606cd180803f8e747b1b57d19eb601cdbfa81b93b9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USL4R0768182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26867b294c2170721277fcf0e78f890bb410bb4b7e05a1994130c50fe2303f4f. 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/USL4R0768183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481921708b70899c5890f2d7db273098eb3be70622b70de500a0195f0a071cde. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USY280753125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63014785cfc70255f165c8c95333fcdb56458c5ab327ce5e7002a47c362f365. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USY280753126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd446b03710dbabb1fd76d572e846619b0c13125bc972533bac539b4ddcf8f016. 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/USY280753128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf85fb2142e3040617e477a75ca77b2f9ea93bfb491a6902b0b4bc1b649f16d8. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/USY280753130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d786bf82958a6a38986b96f57c6bfd631261899acdb8aa5fae4966fe4f5ac. 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/USY280753131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a95826399a99f121b1eaa1865fdee94ecd0d25c6501cde8db54c863bc2be95c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/USY280753135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59a52c9a26b25225d9e816c93b03e9fdd8ad5270c3f3eb8a5e83280b3540060. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USY280753136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667c188a981850a9c87460f81cfda26426bbc00f03677045c85d4697230403e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USHM21886358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f44a023044b9fa7b8d7a8019c53c992a27b7c99a86be5e2b83ddb44df701e61. 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/PACU21900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe907988e21206e4af26552df81e77a46d7dbd62bd509bd00f14bf1f4b634c410. 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/PACU21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f14983257ae94579d1df155c521cf0b0c32a83785d6588083599e74298fcad. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/PACU21900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821f9aee1811cd78242ce16d85917a4935008d9da75b91e2d5f2790420f7975d. 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/PACU21900012.
Señor Loop Se Queda En Casa Y Suelta Varias Plenas
Cuando Todo Está Bien - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d21b7ee645403f2c0f68b901a2049667a7a37f82597155630709a2335e9265. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/PACU22000001.
Números Rojos - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493662666649fe446ac45dabf76f05d1f0359182d28b6687702660bb2b1bb5ab. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/PACU22000002.
Signo de Agua (So Hot) - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a67bb23a14e5d2d9320fb262b3239b87708ada12d0baa92cc3fd148aea8b7c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PACU22000003.
Mes de la Patria - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1549a2ca8727873cbd22014c2792a6dc9a1d22a59622853d34ae52519efe77d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PACU22000004.
Triste Perro - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0cf32e724df0637f9e6b895709b134027e22fae49c2744a01c369ec375e8eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PACU22000005.
Lo Que Hay - Señor Loop Se Queda En Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1537d1a560f41e7f4c8acfadb7788b89b9e8483fe77bc77c28b32ec75451d8b2. 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/PACU22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33da49a999d3b9bc1f209a450f5a5a1ccf3f1941e0354ddc6eede839657cb388. 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/PACU22100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e210e42b14c1dbfce0fa0ad06c414a9b4ec61e7fa8edd035c8722fa081448. 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/USDY42038288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e210e42b14c1dbfce0fa0ad06c414a9b4ec61e7fa8edd035c8722fa081448. 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/USDY42038288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667c188a981850a9c87460f81cfda26426bbc00f03677045c85d4697230403e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM21886358.