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 0x09f53ae7ec9f3976df4445846dbd30eca216daf42faf82ca6731f36e0785bcec. 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/a259191a-e458-49f5-bb02-82d634689c56.json and https://artists.proofprofile.net/proofs/artist/a259191a-e458-49f5-bb02-82d634689c56.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 0x02cad13d33bd13b2aaf4b5ce86163a8c3b1881af35b30ca822104cb1e3108b1d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHZ32139290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e714a43754f4f7268d2ef316a5e92af2d02386a7f63c2bd9ac44dfeeec0eaa8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AR5UH2400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527f9719998f76f34367a13ee04aecbda1473af5a1eab8cbb5c779d8a36278c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/AR5UH2400700.
La Cumbia De La Sal/ La Mochila/ Negro Soy Yo
La cumbia de la sal / La Mochila / Negro soy yo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f7d385fea8d4b496c283b4e8626707cbef8f9fbef84808d2c676fb59c95274. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:47:46Z), 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/NL8RL2419032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4b91dcceb6c2912687eadc7c3a88bf929eedeaaa125c9727855e23bd4078f. 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/NL8RL2419033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb777100fa0c7f49459fc31f672aa49918d5a345285c53071abd55073b2713bfe. 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/AR5UH2400703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0568529f4ffaec1d86f15ef6f00186ce401b84ef0a1c82c50445061155cbac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARG102420767.
Sin Miedo: Un Tiro - Sabor Colombiano (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd158657cb46c525da7412225c10ccaaffbaa23e799d7e21b026ca543aab1f2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:48:51Z), 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/ARG102521076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0331c72e21b7296dc6d5a2bd471c79ac117cddca604de2d0fb91ee890d582878. 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/ARG102521078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b11c7ce79e08d890e8fef8eb175b03ec9c611109e97edaab6f966e5f15f411. 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/ARCS92300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23344ee9e19dc8b25b42f50c7d119d19cfc72638d5ae4cb252e0975d0a0ecc6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARCS92300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b11c7ce79e08d890e8fef8eb175b03ec9c611109e97edaab6f966e5f15f411. 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/ARCS92300006.