thumb|This 3D panoramic view of Teide was created using SRTM data (160% elevation). Teide () or Mount Teide (, ; 'Peak of Teide') is a volcano on the Spanish island of Tenerife, part of the Canary Isl
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 0x5b336705fe0173d62620aebb78c7aeeb6f100291903498e3f5670370b3972d0d. 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/87675ddc-f88e-4cd5-bc14-33419fa34679.json and https://artists.proofprofile.net/proofs/artist/87675ddc-f88e-4cd5-bc14-33419fa34679.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 0x255f89d5ef44eb084a084fd80c614e294808576876ef65d4d68a880dd8e82f75. 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/QZAKB2355123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcd32e89d9a048823a3d422c5f8182cd79ee99ac44012b217eaf7080c3d9fea. 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/QZAKB2352139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2808547dc12554f7f59b0b052041194ab0cca8113cc812a8dbed48b12bfd091. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QZAKB2339729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735648b4266a26a123c6d3e450f69ae21c4e153657125710104d0f10df819701. 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/QZAKB2327987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858884705f5910783551162875fc68230d0092b341ab1a0b6a792f1798ed3006. 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/QZAKB2327988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2bdb77fa8afa1b69e809791198e616e8ba37a3b640a5d661eea0462e105473. 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/QZAKB2311236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaa86715bd61b631b27edbf1b59ed086d978d9a38b66380b83db9e58faba314. 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/QZAKB2311237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3ac6d309bc6889dd10762d0d38b80e472b978709954145ec5a9b30e0506d48. 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/QZAKB2206528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c5cc96420c9220756bfba54ac0b957bb028b29b6758b344e657b8ac1ebd8e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZAKB2206529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0f7d80b4bacd05c3f7b9f52b0bf36c8d930c225ddcd80c949e28f2d212232. 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/QZAKB2205997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863973e419a2b59f69b30bba801b16dfefdbca6708f461221b7119b74fd18604. 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/QZAKB2205998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fd33dbbf680b3bed94b0cb827013e71926fd8ee5641f3c3906252ce61b27de. 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/QZAKB2205999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85feb1825b5af13905ce7f4b7c343f0d2602cabf3f177f437f065747e0de1138. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZAKB2200526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10969b3ae57425fac99dd7770504b3e22fd5cb339b9b53cdc34ec9bbfb1b55c. 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/QZAKB2200527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ee61b29cff7cfa3206637187f1a97abae2601495f78d796a04c165c25339a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZAKB2200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe25087a2cf467524d26617646fa3f6350cf932726b54182e040ca46eaf029b4. 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/QZAKB2173452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeda102828213c7143b220e48245ba9eb61395d783fe54fb0c0e7b0e9174a9ad. 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/QZAKB2173453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96cd054e779e713b9f59a333571e825a202530e34a21dffbcbe6746c8dcc622. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZAKB2173454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacd0099b83207f2b4b42ca749f804a3862f73b901d13717c1cb9d86bbdc7d9. 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/QZAKB2172760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee679036e5d5c4de9da93311816d57da410effb4c34306266ca18fb039b64fd. 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/QZAKB2172761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fd60867b596f0f5a3bcf97d75f678b7066bce7e6c21ced9f03da01c7533e1f. 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/QZAKB2172762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9848ed54ee90bd326cc94bbf1a201568d84041a3ca0259560eb55e15b0af29. 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/QZAKB2170399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5da63f9479a38a3a525c4f7fcdc1866a793a2dd04a1c8966c51fac7e93c63b. 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/QZAKB2170400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175b9f9f31d320513729f1de756ec7e5e814653ccc0e60137a92647e71a04d1a. 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/QZAKB2170401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357d9ca5ecd8f1b1676a1bfa532b212c82f3bee3c40ce0c5756690c6e7d9cf50. 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/QZAKB2168292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c756edc3b322678280ee63337a8adda79676e6b83616d07d0bf57753f0fba. 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/QZAKB2167993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c19689c10ee213cd899c0e08b8786f181315544d086f0376d3fbe8f8ad038c. 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/QZAKB2168065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50be49b11d8624a73ec9fa03015c1cc6f2ab856c29ccb3c082ff8018e6c575. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZAKB2166100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee650b04f4ecb94f5fe4e5c70b0f5c5cad12061098ba8ce226dffecaa0f963f. 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/QZAKB2166101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24514c39b8f36380f0b4fa660bd0b42ad78be0b16be4552cbc161fbe1f02fbda. 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/QZAKB2102128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cefbf3059fa456730b934f79dca678777da0b9d723fcb3f8a3f5a3cce578455. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZAKB2102129.