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 0x260482d3770a1895641e3488db1f645d0763e2170b5fd24e562d4397243fceff. 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/d7cc88f5-28a0-4757-8237-ccb4c051c51b.json and https://artists.proofprofile.net/proofs/artist/d7cc88f5-28a0-4757-8237-ccb4c051c51b.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 0x839de9840a7de70876b58c360c26f9a3d9b796ca7c9ae485ef70500a81839eef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6N22198122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef186d85f6c280bf3f2a5736d988ca5a81d2f47df7a3b870bbd08bf82824baba. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:00Z), 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/QM6N21588239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aab7a59b39c3084518848e4b65f09749f2ae8e12cfcc3fd7efe1b54345779f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM6N21588242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4bcc15a153740e589c2967df92d1246cd7c186a4a1690d2f758d0065ad2985. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:54:07Z), 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/QM6N21588243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c7b26252557be1aa61fce94aae7b5e231b4c33e1297a1cd545910b914dfed6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM6N21588247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd913867d562a5842000efc3c39da440cb147755eb34769e1856e14cb16f778f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6N21588252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaef2189fc99da9e5092379cf520ffcec9a149d83cdea617bece596b51ccf64. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES5702001218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ddf13e78ca9586842107d296bd8393da88693686f25a279c430918c0074948. 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/ES6410103605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b499fb1b1ad5b4e39bf8fe4ee2b37fb8f507d0c9ddaaeb18ccef929d251fe. 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/ES5130300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f9749883cf50b7e1a7f588b37c2ae833eb3e0f6e9427a5a0a0218e3a3e2428. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES5700501042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01af83c3569ed30989de5b17b1564cbbb9001c2458692103ce0aeddd578a91b. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/ES5700501047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363af447ed65ae6d7c2573c765685354797ab57967ba39e68021b8d778ec9db. 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/ES5130300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff27bd5fd96faf0e7f828a27529ed8b2681404a68cafafd1f9aa9d7e93408fb8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/ES5130300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8904e416ae00aa458ab7670074c9039cfd074dc281cf71ab33bbd906c34e3a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESAAI0221313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f948ab01edf4acfd5225a280482c0661999678fe6d8fc4082b16cbf37e5cf31. 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/ESAAI0221317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bb8d6926fb95b3595402690e60af58549cfbc1f599ffb63ada5476298c9026. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:26Z), 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/ESAAI0221322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6181b3843910341251fe3f780f5f4fc3c3b11a44ef4755128228faf94059cc. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:26:16Z), 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/ES71G2121244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d77629d9cea820116da06bc51fb5dc3276cc152cca2d1c9c90a193531c0a2f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ESA061000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c84963f94da718496bd2e34412917aa6e29d6d075f79b10198244166800256. 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/ES04D1600480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a232b8d0670365ef0169cca1514457503370afd7fe228d981cde0ef62621eaa. 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/ESA061908875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c80d8fdcc602a52f8c37330a8637296b1602de174dbbd9a208c6a8ec71aa891. 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/ES04D1600483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f236582866dc409383682c5d080de9ee1ba81acb881842c640fd09ec1dc22e2. 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/ESA061908878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483b7a7e221887cd9e9872260af0e357cf1d822ce6394e3c53c20aa3b1eaf07d. 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/ESA061908879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5d931fa5eaffb4f66c819711bde6367f80523cbeaea27fc8c982fa0194989b. 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/ES04D1600487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e40b6b4e5018842a058e012ce5cf7cd8ac415f92fd1016e9cd15ec3360a8da. 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/ESA061908882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b7949890b79d57b768ed9bfe8f7b283aaba8e663b236585a684c85d27ab55. 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/QMBZ92193336.
Maita Vende Cá Canta a Florencio Sanchidrián (Aromas De Castaño)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c414ce8199215e38a3c07b11cf499a3a42f57f3f246f44d02db9f797e044da2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:12Z), 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/USHM22456088.
Si la Luna Supiera , No Tengo Ni Riqueza Ni Dinero