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 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 0x9ce4ef43796388c6598c6ef15dd5373390ef1ec4bd63493e1fea6d0b009fe42d. 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/782a66bb-0450-4458-9fcc-3ceb9cb8e8d1.json and https://artists.proofprofile.net/proofs/artist/782a66bb-0450-4458-9fcc-3ceb9cb8e8d1.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 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 0x8e8ccd95b2706281779b2ca921a3bdb4719021d32145e768efe26dc9d6218b83. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803bb0887c77bc9afbde6ceaef8a213e538431265518f0593d7a5621c991eafb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f236f8ff45ed4bcce6689c6b6c51da78e1c7750f55d6c282c717fa92c23bbd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e77c2af53be7e8986623acc9972d3b3d294d55b2985d8642936a95152636b41. 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/ZZOPM2118747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042509aa95a0d4e19bf76c265715223d0d95da0369557848caadb2f519fc5cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2116000.
Eurovision (feat. Rondodasosa, Baby Gang, A2 Anti, Morad, Beny Jr, Ashe 22 & Freeze corleone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40960a693ee389e73be2f7eddc06b02a972064ed7df6355800c2d3e74d7e1105. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9bd08cf67c8fbb08cb09b7f5323b64a39d1316c7047a6c5650619d2436a6f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb984f8985d0afd36f96bad0971d6c227fc5a69fe51711ec30adc477412ead43. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a4cd9c3f93a613e8747b50949bd20892e407e5932d0f6ff2384e7d0a5930b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6043f80c79829e96a96c57902d19e244b7955886dc8aa411639e327440457705. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623376e4f34b5940d5127c49966c2309cc9a3670240cce47d9fa72b037de2311. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050d2926722d224d0a4240ebe418ac2f0f3efe1a67887df6b7f06056016fb6d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2110165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa088df3785f765134de016fbf8a8a6cb809960596f043cc846e0f115da4f0ce0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd70e9a43bb237ed4bb9130b216f7fddcf98b18b260a9ec3859eee0f096131b. 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/ZZOPM2118755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9263ebf75ec0b6e4d43a02d2b0064c56e71d9d6f48b1f656ac8f9b948e0c0b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZZOPM2118756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803bb0887c77bc9afbde6ceaef8a213e538431265518f0593d7a5621c991eafb. 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/ZZOPM2118745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9bd08cf67c8fbb08cb09b7f5323b64a39d1316c7047a6c5650619d2436a6f5. 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/ZZOPM2118749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042509aa95a0d4e19bf76c265715223d0d95da0369557848caadb2f519fc5cb. 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/ZZOPM2116000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f3421ff65a8910e909e6f85de5c1654a4237a5495c95e32dc8cbf496996711. 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/US38Y2310049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39c61b38393a57cd9e7c05eda1b57e972f87cdb03ca0851cb0e515bf46a4641. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9NG2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774d93382c36b74eb21caee058469f58923d820a95050f1a18ff928d593af5bc. 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/FR9NG2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c20bff70c057f420a76ebd2631e59be8226f72788f24c70514e5b15a5d1416a. 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/US39N2204512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a5845ec514f0a6d026aae1a332d4ceecd0f6062c3a9a43b81d99f5ce4c0615. 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/US38Y2313095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b24f4ad7c5c0d193d3a5b45f1b32dcc22b325c047e6f096d671b007c8bd9f8. 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/QZK6N2065406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809ef1879821382e5ae9506c36e118781915f9d21df7b647d427d5b8755752d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBARL2500215.