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 0x8e1382b7beeeb4ef27fb1b566b2c24ccef8dad48662ea86e68a820dae6fe159a. 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/50eb5e19-aafb-4c18-b084-965f0abf1169.json and https://artists.proofprofile.net/proofs/artist/50eb5e19-aafb-4c18-b084-965f0abf1169.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 0xf1e91bd45d9d6e6ccc8df1545963cdd4fbfe52157c0a529da1a6847bbb52a295. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARDW81800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1be61c88bff7b4c6db1b35e406ec7e0f03ba97b92bdb9e2c0dc209cec1afa71. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:24:20Z), 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/ARDW81800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34320a02ac28219b34e3580007c930c5b2597e376cfbece9aa4415a8e14a00d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:39Z), 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/ARDW81800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199b0c41a4101648a00b4a9073741656a996c1b2e6c874be716e19114d49e9b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ARDW81800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bed7cad3dada3c167e04a7761c93e0a7cc9ba59d2f9ecddbb110385fcf51bf4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:42:42Z), 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/AR8TN2000375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbb22510cafc618414d0cd0fe38198e29a80f6c2f764fb8a5c38b9bc34dca9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AR8TN2000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc968fae726e72b1d9e118f5ab2a2b89e07e572ad3562d6d1e8a3479031d294c. 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/AR8TN2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344cfce5e784d4eacd2ef7a1d7ac2e4350f164d92b2d9cbe0cd4434849551c0. 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/AR8TN2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f2caac221b09ac5b6c6e69dde7d46a59cbe7f3ceae00801e8738e8df245ce1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/AR8TN2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbb22510cafc618414d0cd0fe38198e29a80f6c2f764fb8a5c38b9bc34dca9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AR8TN2000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835e30a7a557907e1c07039a5150e07a538d73cab075b7eaf5eb2021ff8b084. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:22Z), 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/AR8TN2100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3277b5c8e59b1836451f957ad1d4a617a89803c9ce7413d9b7fc572ac5ee18c. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/AR8TN2100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539b700efe8a6bc39a03b7b67c7cfbd8297e72a828df4eca4bb9aff8eb88e255. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AR8TN2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f8f4dcead50b61b5cf7c714d2fe6fc1a23854f472ee237d3d7081c4bfc246. 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/AR8TN2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700681df9f71cc47212e411c4597b253f18e6d9ed0fe97722cbb4dbf9f0e0009. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AR8TN2400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d033f127ef9f62132abcdb70d54830372db592c3095ccd4f47e72d146b21266. 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/AR8TN2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1215ff22b623158a3f2db56b084fbca94be38e53956b4d9fddd523eb21ac15ea. 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/AR8TN2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b4de7a219dd0f06c5f70879af21144f2e4a1e6fa1270521d2234a835d09860. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AR8TN2400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc863cf48bdfeb06a6546a8b98787157f49db0c60c369e28adcb07746ab4b409c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AR8TN2400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bdab922f2f22d54b631006a79bef7d16fab404e826ea6e73b668d304e73f95. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:56:51Z), 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/AR8TN2400254.
Sabiéndose de los Descalzos (feat. Nación Ekeko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa58aac3801c38d5abb71abcc29c3e2b26eac07d3a7d17cd31fe763b8bf0c23. 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/ARF101900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5deb441a13084056ebcaab74d1253823a58b9c079af8811c3a6dd48a770488. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:44Z), 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/AR1K22000015.
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