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 0xf374eea4d454ab6b7627ea38639be88083133c4c20d52bc86c3169bf1827ca86. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc160b34-8b94-42ff-ac15-f5fdacbd8994.json and https://artists.proofprofile.net/proofs/artist/fc160b34-8b94-42ff-ac15-f5fdacbd8994.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 0x01b692d6a90c75d942cd268da6e6d8af114e6ab1b1035041d68499dac079d1ed. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z1923880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e5d97cea437db46ea8f85abae1b6dcefb58ec762456596c0eed9201504026. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US83Z1923881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752c4f24c4160674c1e7a2858ebcfcec78632a15e02c1f861c063952b18f034. 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/US83Z1923882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919d12c318b5a5af08423bdac737e925dbc013c2a016f3bd22be5cb2c8601344. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US83Z1923883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52cf6d08acf9af9e9023a6bc11716e5d91b997678af97db508d364e0f5ce4e3. 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/US83Z1923884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e95d402d8b44977ec3e39d9aba180de25410b8bcae25363bae579a927841a1. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/US83Z1923885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800276154163bfe6e580276e7e189f81dfb61f2fef34a12f51015b3a86f6b97c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z1923886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f21e61e0064aaa7fd0d62d13448029cebe3ffe13dfc405b97072d9eb8398a85. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/US83Z1923887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ab45365b65a539d6ac428bf289ee3c96ee046c38332b2a3950e8a9954d921. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US83Z1923888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5d49d0b5fd86b2173ce700361d7d0fd4e7363ca01d086053d7756342f3b70. 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/QZTRX2355948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c69db9c561e2208489df34a2a79fcaadcfe87d3ed73a2fd22a5005dd09f60c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US83Z1832932.
La Magia Es Machista - Thomash & GATS Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c8bc518022b4c2f986e79d0bf5e302896e8da12b21b2072430fd8d1c76f990. 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/US83Z2009459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1279557e3b958185b38f7e11d9d65cca996bcafcaff3089e7e135a204c7b12a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US83Z2009460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df7f04f83e777aa6dc1bac26bab05893e7a8bb80c3c59c94aa1a9eed055f24f. 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/US83Z2009469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635d6283faf406a9a4d6a54a6d8137ac8f3ba57c7281fee5c555075a68e7506. 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/US83Z2009461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb153022df43bf9a6736bd1e0d17aae678b23d1887d67a76ed7203ab5d8edade4. 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/US83Z2009468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27916a2bde976d63ee680b750c39f360977353748e868287bb299bb095355c5c. 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/US83Z2009462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590158e1dc7d6797ce2d174fa5ebdbe5e1133269c4650db8791fb0e8cf2f0b2. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US83Z2009463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5fb9bf0fa0c50e15e3947b36724e448547581f337b716d4cee49d974db3907. 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/US83Z2009464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822921c783b1f8bc37ce8af879b61b0bbfd32cc4364a7e9538292222639b6b4. 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/US83Z2009465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63422324fc17f936e44558e99d663f692d21a1c6a31bacc7e1fdf29bb8682823. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2009466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d3a67237005d6192c980da7d8ce1e790b83174a286b2b057b7fcd4ce6ae630. 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/US83Z2009467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004c0fe4d2490a8f7888b4c82cc2876fcacfb49ff905e914b936a133862a05ea. 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/GBKQU2420129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7823c24c574bd7ca4273773829c8bef117d20eeb4a2050b0cbe004790b8b69. 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/GBKQU2420130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77fed19a47dac287208e54d96191bdd09a8f9121634001bc99e61df2afe3a0. 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/GBKQU2420131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4cd06e91f1dbccf330194cdadf9990f0e7af28b4ec4a76ded634a1da13c5b8. 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/QZTRX2437600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9a0afa737a4c1a17f1894f2c6c1baedb6a5305414ffe4703bda00f2847583. 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/QZTRX2437603.