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 0x39227eb7f2cfa42048ed88363d8e8721ebd863bafed1f15ec1619b1248748e62. 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/e88a6527-ee24-4602-8193-997bdb9f940f.json and https://artists.proofprofile.net/proofs/artist/e88a6527-ee24-4602-8193-997bdb9f940f.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 0x15e68beef068c7a904ca851566718cd2f2a0057da78e679c2e673174eafe4684. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:00Z), 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/MXF110201047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06efbd69cb8ceb53997ac1955ab92c18946c505cde82bec951c256bb8112fe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:07Z), 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/MXF110201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb6a2c8c6205cc7e80b251db80afbb813652074ee0df32f8c38f4a35ddf7907. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/MXF110201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97093bdbfc28fd27c01eff5cca4f883e92008524c3a15454e057c634d9f125f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXF110400736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec98ad7ea12b04ae9a3107663c9cb121050d16fe9a965fa2441aa3807e875b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF110400741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4986cc0fd40253b3502a1db8df7de98a27048f7f8698ae5dfc517c7e2d3e4fa5. 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/MXF110400735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1fb5554194c496bd855936f03ff82853b8f80532d755db17ae06213ef8f0c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:28Z), 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/USSD10704315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f280bff4da7d6a438f6addc1739ddaa0460d898725c450eacf3129220b9bcc5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USSD10704306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bf549c0a8b51155b5c8a63722cc27bd2f44035896a35e95a00dbe15322b56d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:33Z), 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/USSD10704307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363636145d12fd1db967d9da6ae1c8d98d56a55b399729d788633e29077fe253. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USSD10704309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d02c083e045f480a3091f4a5c19c62090796bb0db5eefde0ec29ed7cd25242. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USSD10704299.
Alguien - Marcelo Cunning - Nacotheque Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cf0771354af82cfbe47c0de62e4f441653bd8a25d2b79069e33e82b8b2f0c1. 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/USSD10804506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae5e082ed4c1ccf9aa8edcd9687df8c052bbc04377fa936d5ab8dee6b4f391. 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/QM6N22031549.
Se Abre el Cielo (feat. Conociendo Rusia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c77b1a746310399e989361bfe7304cde8e9ca36a1b0d52fc5bc0c51e99d8ee. 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/QZ9WY1701339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c6c5f343f40c394b0a85d07a2168e690f8edb4dba95b793975d591bf716e5a. 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/US7VG2165805.