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 0x8a35923be923396f4026a691160073245f941ea9495fda94ef969438d5804edb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4236d8c4-bd4f-4d03-8f77-13af08edd3da.json and https://artists.proofprofile.net/proofs/artist/4236d8c4-bd4f-4d03-8f77-13af08edd3da.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 0x0c42da6210857a8a6534a247526134ce701c111b6b14d7a697e848db9082f781. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDY41617637.
En la Calle (feat. Skakallo Ruja Karrera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14e4b77b8e8088cac9791ab07c84ef88ba9e2e282429f984bdffc0019ac191e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USDY41617640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacee758bd2f188e8bdf46d2b12215e35382c805b8de525214d275a5c1ef34591. 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/USHM92261278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf843086959070ad876d6360766e9367c0b633ba2052b560e87f825b8c311b7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM92261283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08215fa298d19981eeb3662496efbe0859710c413cf917222b040a3f8faab6d3. 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/USHM92261285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a1547bb547c56a831e706c178be0dcf46396a27e116dea4e35a9d9d45c1bcd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:34Z), 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/USHM92261287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6891c57ddd2b190dd0a179bf892d9cbfb053c8868aaa963023bf5dc30f26d3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USHM92261280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dbef8186097bd4bd29de4548d4ae7dd8ac7e36d265ebffd5c7f43c7a26bb41. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM92261281.
Cumbia y Ska Party: Mexico Libre, Tres Patines, Vatos Rudos, La Negra Caderona, Cumbia Sabrosa, Cumbia del Sol, La Cumbia Campanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84945863f31012f0658c4b57f1b51a018de17a3e07f3709f86203e617cc3fbc6. 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/QMFMF1399798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92ec882b8b6d75ee1378007c88470265a954f8e7bcc9ea6f5f14553b853f6e6. 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/QMFMF1399789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d42d8f004e5c4b26175d9c50e40f730422261bac26861102f5f8b9c938481. 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/QMFMF1399790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79277c30b00b2c7bdb3ec784afd9cae7c2cc9e7ade683fa286d591ca9d9835ae. 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/QMFMF1399802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dd3df52cae4870e076f1ba4ed8257a95187e5985ed20a9f65f44f2f16646ad. 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/QMFMF1399796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec56d01eff12ce410fb2562880d954d99902a1c06db448803eab823e1fccfc. 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/QMFMF1399795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c65e17a33820390d1042666fea4ba869221270beaec2fcc854f8d8d884b08f. 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/QMFMF1399797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d11921c1e3c99fb6a7e3361e232d3a13da16527b1cada4d4f45bd9286855521. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMF1399800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a5e4e558e7e121bdcd0721841a821d50f880bbb3347c71fa364048e31c7a6. 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/QMDA71352933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa027f17a009d8bb0cba9ea8c1323f47de86a4cd99e9909a18b07746b488285f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZUP1011228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b22c809c31052f348ce4327a7eb81f14a076dcb8e9c65c880f46b17b65eee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA71311926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f60f67ee4c57c78109afda661dbaa62a4239b4c579e85b82eb5543a6c166f0. 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/USA371533209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a530f8c56d5f60b66937b5881ed1df813a3f6d8113e0733cf16e6ac8d727d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA371533212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e41d326837b53456f4fe1853a08ffaecd8a19d0515319600aa8b6e91bfbd866. 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/USA371533203.
Mexico Libre! - Ska and Surf Rock from Mexico for Cinco De Mayo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7876ec422984c695541815067cc3b0b445f2305c08532658bfb2556725a801. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA561030927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d42d8f004e5c4b26175d9c50e40f730422261bac26861102f5f8b9c938481. 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/QMFMF1399790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79277c30b00b2c7bdb3ec784afd9cae7c2cc9e7ade683fa286d591ca9d9835ae. 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/QMFMF1399802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84945863f31012f0658c4b57f1b51a018de17a3e07f3709f86203e617cc3fbc6. 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/QMFMF1399798.