El Tiempo, which means "time" or "the time" in Spanish, may refer to: El Tiempo (Colombia), a Colombian newspaper El Tiempo (Honduras), a Honduran newspaper El Tiempo (Ecuador), an Ecuadorian newspap
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b076e48a19d291e0e977e4c0cd1417180498f058a66c5dcd75092ff601482b8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4e890e0-8405-4730-b453-f4b8dab4fed1.json and https://artists.proofprofile.net/proofs/artist/d4e890e0-8405-4730-b453-f4b8dab4fed1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb9d5e7a4e42ad1989db35159d7401eab21e1fda44923213d3ae18df58bbbaa. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMDA62276949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60696e43627941f40bbbeda8ca8d9e3b23784dd9871d568442f646bdda2f99a7. 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/QMDA62276950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0058f0e901b06912ba7bec95ae49797c85c6561a50b357878e02a19862b14fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA62276951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f9b40d6670a8f4ed1deebd4daa6f22d64468f7f55a8e8ed6825acc6aa6de2c. 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/QMDA62276952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686e5b3441db7e3163e66bf305862a4a607a95a86d820fe3ae8f32ecc883395. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62276955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa6effc75a1dfda2355ec68c44c4a18e25ed61e70b43f01f782dd8a626a2b5. 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/QMDA62276957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3159052d3a9ce45c8937d6643b56a309b30517a2dd5c3797618a9f2b79a0039. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA62276960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9633cc3e1c96469174b0ca0fcf94f56a26d29006b7c5c7eca44ea842a9b18. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QMDA62276954.
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 0x3f2bfabc1703373cd8762c34e158930dca5550b017cbf600456e2b72642c32d6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMDA62276956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bca930e133f035407ead702738204dd95b7bda2070c9d3e3fbb66fa03a2367. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMDA62276958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b1eee573d5a13e818856c8b99eaf187c2b905646399d08cf48ca1a00ace146. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMDA62276961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73635c2571e0e55bd48837d429e60ba4f1d3d2c3ea188e8becb4b0e5dee32c62. 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/QMDA62276962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b38ab917a4a774aa403667d83298d293ed910399297e5e8d73037637198e44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA62276860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314d2b361a028081c731d63f639aa2072667f91abcb64b6d46606f3e6cfac4c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA62276864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d860f1ba4f69c8c0527d8afe38d21131064d925fbc275a20d3f5116aee75d21. 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/QMDA62259809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32271128bcf6fcf4e42e5491f01f261ba5bb983e2e09db0be773fda8f151fa4. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QMDA62276862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0fdc08af9534a795fc8721fc0a48572fb47a8f2e0bc2ca0a5fa1aa7c12200b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMDA62276870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529330754a5fb90272f4dbeae2e0b602260f786449a9667c722df86104678fba. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMDA62259805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c37d963af14b0ef9fd5a1f91e93b2feef6e51b1235dbc1d9a97d959cd2160f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMDA62259807.