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 0xe6342174889ef45a2ae36828128e3677b5e086f16ecf25a006e8b57381cd1e05. 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/eae639e7-7b79-459e-b69e-65cb59d77a41.json and https://artists.proofprofile.net/proofs/artist/eae639e7-7b79-459e-b69e-65cb59d77a41.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 0x6786593f8edd7b0d4abf5cf2c7673ba27dbea1f9122d27c0e5c734dd48fb14de. 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/USJ3V1213866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7dcda57f14559176f2e79da0acc40ff0ad5d4cbc137c20b840975d3b37339d. 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/USJ3V1350167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94029aba55ad8a450a163b3e4d4a20972f28aa47921fff3bec403abe54d6bc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USJ3V1350168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05923fd8bf07a304666268f4bf6f5727601f4c19bcf31f0372174d63ab646702. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USJ3V1350171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1c89f3428e03fe526780e64fe35fc47bd45a571d064159623436eeb19eaca5. 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/USJ3V1350173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e16914aeca987730877190272587487555a2af04d1dde03ad0321caeef35c27. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USJ3V1350178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdf1c0b55ce702f9fc94e38d2eae328ad5fe7ab19b2e9bf06bc3d870fd0fe06. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZ9Y21708480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefdbff7e9db6f857028e1223deff6792a0e03a79b352eb5188c09801970d4fa. 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/QZ9Y21708481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c024a5b28391d7eb5756959320e11eb7494ea001859595dcdf3d20839bcf0b. 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/QZ9Y21708482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018af359672c41d2111a3e7c1b1ed91d30166eee9a1476ac7519a1fd43924d0d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZ9Y21708489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f81ae56855a5a868f7bab098646c362c3c680d75dddfc9f898136ac075b797. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZFZ21925217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b9d9d24b93f45cae750e7d9e49fbce8a7dbcc78c6c9c9d8bec55096af9a21. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHNB1974397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc19979d29a97b20e4fd02b3e826c49021baf75e1cb38699eb78f05733eb3480. 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/QMCE32100245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbde74dc311e3167da791b32b7ef0a08b7688b942f3024264b2ee7f837d4cc00. 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/QZAKB2136494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611407bb0dc93af96859e2a37016290013b9aa4062978265817b85b7a330bb3. 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/QZAKB2162743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ee0804965538fe41d8907970fe67211502eeb5e1883badab8420c3cf18f6d2. 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/QZAKB2162744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c752007eda4a3c13a2ff08f24a4e61e079da14ec875f489c3859ec7825a2d0. 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/QZAKB2158617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc056f49f3ad55658f0f6fe5945751a1ef54756c740d7deef9ea7a0bcb3e7bcbf. 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/QZAKB2162752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e26a89f513be4e3adfa30497c71e933edab446215b68bc141ca1cbe0c3c804. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2385959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab3514d66a8b0efbcc1855f49284b956596df0b070ab2a1b93b7c4bd487def. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUG12207802.
Six 12's (feat. Mouse On Tha Track) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f3e920634777fcda6a40af1a2edb30d4a3a9abfde4eb550a8700733489a798. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLD91757165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94eb2ac361e6baf100f6d703b5d7c74a445cdb36af4a5638a4ae08d314d48b61. 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/USAT20800777.
First Night (feat. Mouse On Tha Track) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa54269ade9ccf250cbcce7de8573e53cdcb77dbf26e81ee13d421e786db15b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USLD91757164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d3e03f641836f079443964e1289d1f10478968054fb57ea5e452bfb44d9ea. 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/USAT22219246.
Wanna See Her (feat. Mouse On Tha Track)
Trill Entertainment Presents: Trill Fam - Respect Is A Must
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a600200c91efd1b9723ee9b08bba999a2999b418914625e2d700b6cedb9bc7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT21601512.
Cartoon (feat. Shell & Mouse On Tha Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa3fb9b3dc726947b6fae0f6cceeb79cb1ec640b1c0e63e534fe59bfc8be645. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEA21000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa3fb9b3dc726947b6fae0f6cceeb79cb1ec640b1c0e63e534fe59bfc8be645. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USEA21000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94eb2ac361e6baf100f6d703b5d7c74a445cdb36af4a5638a4ae08d314d48b61. 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/USAT20800777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf32345a2e859b2effe92a20c755584acb6ff5e91b0329d9d9a8ef2b19568b7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT20801027.
Turn The Beat Up (feat. Foxx, Lil Trill, Lil Phat & Webbie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0c19e52a1176a7a37e5921eaedf4d003fb02a74cd70afac4fdd277ffd1506f. 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/USEA21000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e26a89f513be4e3adfa30497c71e933edab446215b68bc141ca1cbe0c3c804. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2385959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e59e3cc76325ac417f02adeac069e6f11deea9db5d2c29957a7bfe7c72b0b0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUG12201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ba627b6abbfe6118c285d34f0de60c7f572081b9f3660e74c5127d443d744. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USUG12200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ba627b6abbfe6118c285d34f0de60c7f572081b9f3660e74c5127d443d744. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUG12200832.