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 0x4814763686805c54e2c3e4ad5c55c43beda3aeefffe3feeba61d4393bff3c784. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d609e2dd-e3ab-4003-ad5f-98fcf495d28b.json and https://artists.proofprofile.net/proofs/artist/d609e2dd-e3ab-4003-ad5f-98fcf495d28b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Guaper, La Tenaza que Corta el Alambre del Corral
Guaper la Tenaza Que Corta el Alambre del Corral
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 0x0d381f5c265b6ebd457eae5df508bb70751f2ef903d5d0e9ee931fc4035d535a. 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/ESA011411738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1025a18b93f51f1413c43eb012c8084b5af5d326ee97d6c9fa1b4faab1ee299. 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/ESA011411742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dd39faccbfc3a6918c27b3896f30d5eff1fa0998c5afdc512ad5073be79384. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ESA011410761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9620ca8e1000500d21e700c43c135bbd6cdfce74b34920e40c5503e6f93b69d5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA011410763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77830f81cfeb382efdd5842e31bc0e5e010f02377edb99628781375b3bb80fa4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:42Z), 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/ESA011410765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b8fd1d26747cf5b1fc5ef4483fd908b2bf102892514628c80b2a2f3462bfb2. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:35:13Z), 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/ESA011410766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3813a6553b4367ce1db7f9b74f8fee82f107ffdf35a89070a23ed6d2d25a0cf2. 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/ESA011410767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca27361dc5882a770f999335110e711a3fbe15a279d7c7cbeccb39638c1d20. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/ESA011410769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a78e5907ecdb01c863f2bcd7895da1c4a527d81894c943ca6e9b2c098029b7. 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/ESA011410770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4cb2b94b91928176f4aaecfa57396b549609be244c7c87a2dcb3ed6c20f291. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ESA011410771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f64f7ffc4916353d38188882e0762bcbe77838f47f8c4dcafc4911cc5e3d685. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ARC571501589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d6dca6a6886182704ca74605aed5ebe823a38af1c44faf9c42eabccbcb895c. 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/ARC571501590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff6513a2f895eda837445318594b02434e2c5150696328bea1fd5f523daabe. 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/ARC571501596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d66d37fd6b17fe495fde1383b9e04ca60fc683c48c46c9b8af713829e17e8c. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/USHM21771954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7ad940ecc74390e109b53f87dd2b663600045755831a2feb8c99a85f74209. 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/USCGJ1846990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbfb6ffbb8271246fdaeca7923c3dbc5b3c484422ed15ec471b362cae1c8784. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ARA501900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec895696b4f630fa94a5089e0430d0d41aa420a055130219d88a8a686d914a4e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ARA501900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff33b1cee0f8481f73bd585cd72152d06404222a3054860c48a7779549b9b9a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ARA501900109.
El Mismo Sol (Lado B) Experimental Set - Abril 2018
El Mismo Sol (Lado B) - Experimental Set - Abril 2018
El Mismo Sol (Lado B) Experimental Set - Abril 2018 [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2896a40e2e82fd605aa7b28871cabfe9bf65f06fbe4aae58614b2de44695497. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AR1RB2010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d75864460e118effd1d54a500acbf6401d963eab3034ba08b62c62a0164a7c. 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/AR1RB2010013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5e1cf4104469ee15b6ef96200ce223a8fcbc830893bdd10703db1c9b7c7082. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:07:35Z), 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/AR1RB2110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5bf8501d48711d5791e24cde3fc81c68e23af3803c4302513393d85040fba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR1RB2110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69e0995a2a08af7002161cdede0f8604156d9f19e153cba71b523603bfcff2c. 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/AR1RB2210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3709ac82c6f8b6d95bf806f35d4372a4b799952949d34f721d361a61c9a18a. 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/AR1RB2210003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77233e44ab1ce96df3993c9160bbd6117fc33abf8781f3749409b15fb79ee6b3. 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/AR1RB2210002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4ffbcf9c36d77b3536f88786128bcf7e9cd1ed5f9645a7f520274d5d0d3be4. 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/AR1RB2210004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69e0995a2a08af7002161cdede0f8604156d9f19e153cba71b523603bfcff2c. 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/AR1RB2210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46efd610b50d26fc50de0d7e98c4c1f5f91cf19e2a19e005f546b7f99370b62. 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/AR1RB2210005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49358c76c0cb9eebe57d3ce4f139f648c094404edef270d232e55fb6abc8b4. 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/AR1RB2210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d78bfe1862b9f1192f8a84a995edc5985b3c11cca35f481e33535b4b9ea98. 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/AR1RB2210007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efb8c39626178d1da19aae0e40794072e629841ba2b755fcf8f719a5e783a6. 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/AR1RB2210008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4766170241fd3f810ba87e1ffd3e7a6023fab7e07e4f699d028d8d361ca72bce. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:35Z), 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/AR1RB2310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9c56673560d824378b2e6044a3478a7a01146f5778724955df5033e691edd. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/AR6B52500105.