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 0xc2a52dc4c64ed9151a3772a5013ab203181893162b00d82b571593b4f22f937c. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/087150b3-d3f2-449e-aca8-24cb32b174ab.json and https://artists.proofprofile.net/proofs/artist/087150b3-d3f2-449e-aca8-24cb32b174ab.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8e00761847a53ce39ca5c4d36fa8fa764bd9447dbd5c6ae70291e718ec011d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2103369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9156806f395719777e12c28af4498772b68e3b6b4f2c29b77a9f919fa00940be. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2103370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25673204ce64af269a270c0c2214f0b0fda58175bcda7a80acfb573e70f1f176. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1777817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf993c2fd79437d132443d50738c77cac64dfb41bfffbd4a54e36bcb472c686c5. 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/US83Z1777818.
The Sound of Sand feat. Ido Segal - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f03d306bce2289404d2bb620841b2acf6e7d29914cf2b880438b516b5950e. 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/US83Z1777819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ffb4c618f13fe8f1f668413632c1289433e8dd8f7793b083c24bd97c821ff9. 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/US83Z1777836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf14253e192a94dbd9737aa8de04d84678779ffb6fcdc6045fb64d7073458b4. 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/US83Z1777837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ac01dce6d6a20f92d0cdd4203673966acf52427cfc832de9566a8f7e950de. 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/US83Z1777822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1893841a2ada804cf1d5f0556120dc149934dfff61ccb25ea47c966e48d2c79. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1777839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18591e62288fc177aab79fb09aa35f77b395306f6f80e9c19719d864d2e8646. 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/US83Z1777820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58bfb869031888599da65b3ab92d62380acc9c9143f8cc208481ac3a1802be2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z1777826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a9d85323340fe0c964ea179f3a7a9bef2d0fb9390eed7cb7cef55d24bb50c5. 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/US83Z1777834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1594645445557bc9527bb25b1ae38469dbf50ca550a032a008ff44d9002ae155. 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/US83Z1777828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4715eb632ee0ad5134e6b7ae3090d4cd1830d5d821c5177bd6997acb9859368b. 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/US83Z1777824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc0f316120fd7b328db998e704a217321ba457e5e8bb6d6cec77c7f9a88449. 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/US83Z1777823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e8c390b2e203b370c0274f33f450af76f18de97f4440dc41acba347959d44. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US83Z1777838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5185c53487c4b6d8ede2277b630c092fe19a4d190319b3f2820c91472688bf7. 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/US83Z1777835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82faeb75e20affc34d7d1b82cfccaac5f98ed8bcec3f4f97294851ff9fc9f163. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1777821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8479dbf710ef9f16e02d07a4839e276f52d299a8172dd2205ae7579ac943c71. 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/US83Z1777832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7252a600980abe4afc5e6dff2a1a42fa6ad1db4eee719564726b354d5e031031. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1777833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bb10acc68fe03fd5540598b98cdebde87c1cb41bdf96b861728ac3f3769f05. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US83Z1777829.
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
Cuatro Vientos (feat. Walker Barnard & Daneon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466991e8525d8ef95071f17387a758c387bb699cf6229b82d761587525a31375. 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/FR6F31822570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e00e0d5232341a8772b08f376e5c107cfd1c22841a8af7df8c9c83c95cbce9. 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/FR6F31822580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36e68edb66ce9ccf1a0f0481d79e34195545a7f4a57ea5373257fde67e5b491. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6F31822590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264f1b02d6d98bbf87bc1447ffe0d75ff9bfc0d75d9f438da6e2af4cfaee7b17. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR6F31822600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a91894ebe85032f563515732760d9fa729ba4d437c869e292bc3c26b77c946. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR6F31822610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9804ca77094ac445c9f614c31f1dbad91a12ce2d1bfabcc6967c3aae9be305b0. 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/FR6F31822620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe0a8e95bf0d1aa7718d6c67ad33fa4fc9a8583e3d1c5e7d78171c50a5c25a1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR6F31822630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b243dc625f032a0905bfa6cc9451da1b5fc32ad03d5b4bc6f014be3ec6adb3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR6F31822640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7b128df625562b8c566c115974bdabb028c080a45e4c75d7e2bdd8c613ac15. 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/FR6F31822660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f7ed0243ea4ad58101ba3c242ed0da92ba79952f6b3f1e8da57c6d9517cbec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6F31822670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c36f3a393166f838b10eea0936754614fc13ecf1e3978b0efffec1e0e3a91f. 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/FR6F31822680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b9033bc6f24d33bf98406e1884e663f425c356c7af18e78b7ddb45d3bdfc18. 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/US83Z1774804.