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 0x2ef0140ba3773dd88e225f12133fb15a5b750c00cad9bf77a48e8a1cc34cab9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a85b0944-fbff-41c6-956b-ce189c171a50.json and https://artists.proofprofile.net/proofs/artist/a85b0944-fbff-41c6-956b-ce189c171a50.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 0xf2b327dadd656e4f31cd035a0ed9373f43f61a32b1d2ceb14f95f9bb7ee1b393. 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/TCAEF1911997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d888693cf6f1ecd9cd64773a09b0b1c97c083cb5d913f03ceb80d033b46f8b. 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/TCACC1426362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93a68a7e8a7e9c1aae3f4c22509fe8a31e69df056185bb968bba545af6f680. 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/TCACC1426371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930880291e6446aba803ccb8e89e557f52d50a79e5456a6c4c069f15d9441bc4. 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/TCACC1426373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb220a7ce97005171afbfd800e55a34ccf2fd75e75146235856a08b952ac9fff9. 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/TCACC1426374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41251b55958e773c95e31ee649fd7eb19e83812ef9173b21524448afed36e9e6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACC1426375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358aff9e1a84ab34b7cf33384f48e17d268aa40afbe4ce8259be7e4ed3c4cee2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACC1426378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efa644a42141ab8f9dd172605c1277f80132b676e0ac15ffbfbc225f52b7bd6. 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/TCACC1426380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18b66dd49a882ed8f87e18b8a8a2114502f5f27a19ab88dc96a687b46e539cb. 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/TCACC1426383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1bab145ee113204ff51a2c372e9244bbc9be44b94c1ac17d8fb3cf63c6c98f. 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/TCACC1426384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a74f959162335852a5c947376fcc73c7e372add2d640aae00e0662d80e11e2. 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/TCAET2055979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da3fcfedd2fbca6705fa8e2753cf167bd10f5e5d6c5cd2a6bd496a41026d139. 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/TCACC1426391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef8092efb72854ab1cf86fb290f899c0c6f77a5918c5a9782da0768daaa839b. 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/TCAET2055988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467962a67c646bf23ede27f82d05b35a7287653a1a122c96321937e4647cc8cc. 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/TCACC1426394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853e7ef4e5a68cd3fe2107c00cc950411ff9783f2e31cceb958fc4c41e5c2db1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACC1426395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd03856c47fd9811e0695bc0489d62d8c1fb50335b8c4e16c9be451fbabbfe. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:47:52Z), 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/TCACC1426396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf23085d3ed1b1c78343653d86e869e42cd801dea01760205a2d49f4dee41b2c. 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/TCACC1426398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87a257046a7653df0e303a97a962d89a82e9e175b2916d927d0c0c40f513a4b. 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/TCACC1426399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a9c614c44be5b798ba1ad6f235950da147346c57214eb451ab9a64f4386fe. 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/TCACC1426400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ab3a1430df3d860758a197606efe18288384ffe7b348826dd4e0a2784ce8e7. 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/TCACC1426401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d88c207e775c0e855b7da713f8487d6ac27ef7aaa05f3848e5246f414bb366. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACC1426402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb228f7b95b3663d2972e8286b4214d7dcb920c4fac104fa30a61b75fa759d3a0. 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/TCACC1426392.
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
Rap Chileno el Sur Es Hardcore Godlevel Enfermos del Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6339e5f9aba52922d4ee07f792a4137eed2544e12257406ee1df3ad553381. 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/TCACH1535407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3e8f6266d1812b153b85a129c554b95de4bd23a8f128fa99b69bb8fd3826. 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/TCACH1535379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70bca49ca8df551f4475103564998c621168e8b34fc655fb68344e07a27d96. 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/TCACH1535376.
El Sur Es Hardcore la Venganza de los Mcs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea217c0a75ff5f5fea89e014c7b495b69935b8671b96f3d588b0764b42232dd. 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/TCACH1535383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fe269afe6f448b81c787a65a872704fa260ad7a5f6e819ee757c17b3b10631. 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/TCACH1579703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f6d22821d3c416a900dc231a712447797b67dd0b18b8a1109e7ee1b3b837d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACH1535412.