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 0xdaa41fc5da077a4358e634c911a3172e1332edc6e3eb85245abcf83b6244ed5c. 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/a70d4f45-89fd-4b83-877e-2d0de93ea18e.json and https://artists.proofprofile.net/proofs/artist/a70d4f45-89fd-4b83-877e-2d0de93ea18e.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 0x66153e5e66f0303ef4f0a9622c81e2801731d7a0e16abafbf9b4c505d917e96f. 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/USASN1101473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1adb599bc86b8a138b0cbbc192277b6bdfa12e5b87263f696b947424c97306. 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/USASN1101474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c356980d12618c9869123f139b9a35951d585869394b89a06a4bacd9741fa6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USASN1101475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ac9f8a80854c597e0eccfe46806addcb761bf67c252061e220b83acf720a85. 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/USASN1101477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf5731c3bb0ed11c4c89c75754f376d3a18fdbbc2dae0b24bdfa04a36210ff9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USASN1101478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4cec8516e7b303c4fadefa33a2341a6818bbfe9f2695c75e2a129b79e783dc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US9CY1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d5bb13df5045a34301bf25e68cd0cc0a21abb19fa31ec0dcf7c0b632bf73f6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/US9CY1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06bc76dcfbc8d95884920967e965c3776abdb03136ffe4d0fa153dc8c7a3b21. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US9CY1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf697533a7d54fcfcf50b81c7410e9eff0de9f33a4af795a0412868f4a0591297. 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/TCABQ1302016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f1650a260d9cd60332e24b286b719e598f830c8fef4f413485239514727a18. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCABQ1302017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c888e26ca134501dd8cbad74b37be5ea7fa50e70cb14715f5e4a867d999e48. 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/US39K1314502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3251176d9f2b0692b66a7d5e71315843e51f0c7609bb4f990f2d70723d7c127. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US39K1314508.
Paquetazo 30 De Coleccion - Puras Buenas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceec317c8bb96013662a233559339f9a78dd584f723d87f256f9f29191ba5d4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/US9CY1400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7f53fac48e68021e2da0bb0624305ab47358abd0670c3a36e9f7966389bae6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUM71320142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f89a96cee699a7dedbf388656e1b034c3917d906005f9483a51ab1a6248f95. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/US9CY1400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea26b5b21ddeb61b8fd503bbcfb611b9f68e8911d4a1c08ffc66e78715b40f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:30:36Z), 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/US9CY1400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bde46d1ee147c362cc64ebe5ed1559344975442ae61747812e32e69ea18c677. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US9CY1400344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8b85b126e52cf1be0ebfbccc7d05a40f0e42148bed3d74539f87c37d1b8824. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/US39K1631302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18526e1f104e8003adbed2174b0c43729cd7cab0720b9f79ccf469efb63eab04. 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/US39K1631305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2282703f81715fe82f52856886ed21a0664a69699839922b3b68cdefebc71f3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US39K0800470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa647a141da905a240b4fbf5ee89d07aeb5834dd5947f04b89a16047d0bbb6e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/US39K1631310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b62bdb659806c68e646ff5ddcdb5fc1ed47b207aa3858b91a2695e23ce522. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:25Z), 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/US39K1631306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03ab54c23b762be81078383cf7545336940518460cce0699f5f43fadb803f92. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/US39K1631307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcc13972b36f8f414e376e33dfbbe1cad34f86026cbb1ab15b2746121108afb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US39K1631309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff956ad6c8a052189aa5ed59cd8ae72579c661b0debe59853ed771fa1fa46b3. 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/US39K1629006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9602e6f90b77ea63418495daa97b236ef3c8a5138fdfe1c7b13ac37d61573688. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US39K1629008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d78b800a9a0b7c23299548964bdf0c6eef9fb5f7e98230ef482b5bba0fd89. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/US39K1629003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0459299b22a17734a38f38735ab36c6101fd4d1516b5247e0203256d5eb4c416. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US39K1629005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767f62fb636c98b679ec8ac7c33540ca5258e5670206324d11b3cbe5d1a3f92. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM6DC1674006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270bdc0d55f9b28e78318edd45bb15e28171fe8c333d51df954409bfba8c633a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:32Z), 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/QM6DC1674007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe480a33c8b67820f0628fd00fb8faa88bec98624f381327728c2941d4464088. 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/QM6DC1674010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a83d27e2ef5ff0af8ce208582bb4940fa04457170584d2ea630ccbd60b6f77. 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/QM7281970558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f75f2103e63e005c85d8bcdec5d0302c5874b05296639da269d5b5ac038b1b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:06:13Z), 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/QM6MZ2002603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af1dabc92b554c945f97f3741a34471d5b5e1538ac9a7159e5426d8a8f24858. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZDQH2158597.
Pacas De A Kilo / Contrabando Y Traición / Sangre Caliente / Los Dos Plebes - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f8b43684df63590b68a95609f755ffb8dbe96a8798d62c7c4d8ef16a59e43. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDQH2158603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad70d820bec66788473220c3da86180e0f114b26000fb773b09d7c0b6d2c6a8. 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/QZDQH2158605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a40ddfedae5d9a06281e77b702d10be6b06a176ce5e8e14ebbef16c20cfe4a. 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/QZDQH2266808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f46984ba77c7eaa65065a77a294e14592cc1a8e2fd412d757239b223c47330b. 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/QZDQH2375888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735e0a127afd59b7514a0e8f447ab8c6d0951af55f1fbcf05194d5bb5b922d8f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR96X2571140.