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 0x3a9722c4878432575d9c356e9a35b5a439dc7841d2ee038cb44a423da588a4e9. 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/ab172d37-e2d8-4b98-8f33-2d4100815995.json and https://artists.proofprofile.net/proofs/artist/ab172d37-e2d8-4b98-8f33-2d4100815995.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mucho Corazon (feat. Mariachi Reyna De Los Angeles)
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 0xc9c54b341e0811c1136b7d7ad34af7b96d5be04b580ffe3a879ba6d1c6e7aa50. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADB1726018.
El Gustito (feat. Mariachi Los Camperos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d2a727606cfa27738bf1bf1ba03f344bc3e3a331f4a7b527b3db9f3c7fa31. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/TCADB1726022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c710ccbb9b1200f1574750924c6923962c03276ae08a1e333a43719a54796e. 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/TCADB1726025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3df83ac1fde33ab28e929d2348dcb41275737a465a0c7fe42ad76704f20bce3. 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/TCADB1726026.
It's the Most Wonderful Time of the Year
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb27569d5f58076dfe99e3846a881e580aa325d49010011cfef4f260db41b89. 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/TCAGL2293875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa889c4f34baf9849b9d9d4f64164f59cf45dc709a659a53964c4766c53645. 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/TCAGL2293884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc668611aa4fb63c4355b3842551acd67fdadd6aaed472084d2003ff7d07375a7. 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/TCAGF2235736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be5e021b3491f00e4ab703124fcca153cd0c22de0acf9f89c26ac7e7a0dd694. 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/TCAGL2293904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1637fee04764899ec08300cea76635b52b322603500caee7c9b20e1c6a89b708. 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/TCAGL2293910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815a66ee111c0797b9d06950295aaef2fcaa63b2c9ac97fd6166a4e922f03643. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCAGL2293916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac67a72181006c11563011ee6b243b8b641d0f4cfc3e7df3894811e28d7f05b. 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/TCAGL2293920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014b7503b7c8259c3b2d71f9e9a2472f4c297f7be6416ad433c2ac69a5c3d592. 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/TCAGL2293925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf7b2ba32a2c0cd3f71d75e4818f78b68cc2321ba401017d3bbbe8c4db20d15. 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/TCAGL2293929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b045d466e4740e746cb48a7ededb56f1fc78f20825c69c1cd03df58ef4e8ea. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCAGL2293933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b1757bc8652af4cdeea370ea2b6610027317a24d3fc52f2f580eb6bf90d557. 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/TCAGL2293943.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc04d1b80848e190fcc65c294947728d5485868626d79d5f8dfc74852f39a8b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAIS2464215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc2ea7bebffd6f04d87342dc5ae434dee469f8872fdd933105005cb24959ec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAIV2435250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc2ea7bebffd6f04d87342dc5ae434dee469f8872fdd933105005cb24959ec. 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/TCAIV2435250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2c9cf1a8102038617c60ee6e940872b9bd2de583db898272e888f4f261f7e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJP2579227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362bf86b51eb1d61b49cb6f255a44b07cc53f922cc7c70a06db07efb7eb9e13. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJP2579246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4def920cf52f50575001746cdc33a471ddef56251f0b4930c34169432ba387. 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/TCAJQ2579264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f496f19a8deaf2cc0a60c51e97b2aec63b333990022c2f230d0333f3f0efe. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCAJP2579281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bfa2aae203204072dd4ea4c12944f7da8779d34ff25721c01fdbd740ebb458. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJP2579308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b4dc6de5a8b4e704e57f596ea2c183a38a74409f7300a9ea1a1878b8f137b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJQ2579314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c973177aea563f2cea2236b1e06cfe9cbfc3dec8ef69d7478317cd7e797e3. 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/TCAJP2579335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc04d1b80848e190fcc65c294947728d5485868626d79d5f8dfc74852f39a8b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAIS2464215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13fd4dbd4793407bfa6fb62da89b72632274fe2eef5859841ee1ea48e908c0. 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/TCAJC2423655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9eb33fc3b6564bb7962ab35e547ee15c58d3773bfe281c54250b0eec064f7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAJP2579239.