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 0x0eb61e98ce6f616957e6c58a4847feceaa1ef78731492012982bf3c65c844df1. 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/b8c360d7-91ba-4cb8-a733-9a2546bb473e.json and https://artists.proofprofile.net/proofs/artist/b8c360d7-91ba-4cb8-a733-9a2546bb473e.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 0xbd1f7caccd52db4d9739b33b9cdad09bc960f70e6b66fd816f903413962119d5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6DC1738740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9161edc413f159bad8673be82c94e5ab4bb4d05d40593404433a6195f387b045. 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/QM6DC1738742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb9fc209fbbcd69bd6e6ddf2fac60e81a4296e78ad91dafee9f0b51d76a2fa2. 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/QM6DC1738745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac398d17cab75f786264eba337e5c0bfbe6c368ca813d17b4e605a73b96c57b5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QM6DC1738746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf226c22c2f9c1a8de163e5d9fcac7b1eb01febc9f63bdf3262db318e53185c. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QM6DC1738748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514481fdc15e337aed2bbb590a360f940a6714a4ad643eff26f5f2d3ddedc8b2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6DC1738749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae375f97f378391acd100ff23bc765707092649a09f29de70e02a186811284c. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QM6DC1738750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59bf67f393c57d0bf58af2f09a0b8efce552f2209fd8ad44777405c7b8e0630. 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/QM6DC1738797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea7c33be28cb9993372e43e327a251b7b9f9616edcd8811f0a427c90c67383. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDQH2156291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40bf855713b2bb738dbb893ccb6f34e2f679c0939b6700eae2e587d184585c9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDQH2156292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b670930ddc0eb8de18165a6d03c56f3d8d4d0bf6907eef626ecf040c4f6588. 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/QZDQH2257424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450ab0d2eec77c222d420abdb2a63f273d8281ba7c99cfc4c7da666cc383593. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZDQH2257425.
Popurrí Bonita: Tonto Mi Corazón / Bonita / Amor Fugaz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6b8b293d526a7a831594dd8822b078b5a12400d6635fd9ebea293d2a84b577. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDQH2353304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bd5998e8022ef7ee3349e72a43762e770540a591bd61418669fe6f56284e9b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDQH2393978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc47c81027174e6f40ae2f8b4aafa43a331d6a8e7fa9b9afa04e942589d2bab7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDQH2501936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d7832e6bd2c57f663d7d918856a829c977318bfe6021d5a4504848c1c10bab. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZDQH2501937.