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 0x519d09424090b3ee11d599f2eb37c610e10d4bdbc3b063d53035287c1b638222. 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/03eb645b-5da0-4cff-b243-c7e1a853ae5d.json and https://artists.proofprofile.net/proofs/artist/03eb645b-5da0-4cff-b243-c7e1a853ae5d.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 0xb987dce1a8ffa0d22a680e2464e7a70c2ceee9baa90efb492a2905ba01af363d. 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/ARF412400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346f558df2eaf6fb701ba4bc377c81b6a2e9f08a464c165adbb0725000ab3467. 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/ARF411100991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c65c95f1a1509edc3d9b0604f7ddbe665946dbf6057e05e55fe042ed922318. 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/ARF410600524.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c73db3ff0c3b42493504c8849bf3ca60ebd97401918c5653cfc5ab433c8250d. 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/ARF411701644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ee3506cbdb578a24dd7155ad0788193a1a1f8c2be2f2814e73b9b6f29c53c. 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/ARF411701645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388e833ed7c1b7387f6d84eb3db5dda5c46dd08c22f17cf5761f008803a91f04. 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/ARF412200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035f382477e8a32f257c67a5e2937de963dca9032dac88105602b1a7cf7886a9. 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/ARF410500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035f382477e8a32f257c67a5e2937de963dca9032dac88105602b1a7cf7886a9. 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/ARF410500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c1eb667081c926a83d97b856cd790927415a3953abb65d793cdb69e1d255a0. 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/ARF411600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ba9791390bb5aa2ac1f4ce8c72e329284987f2f83bb3c95f60f7342f5e3119. 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/ARF412000028.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65470baa6186ed5dac16ab426f39f89255c75003f983cade0b9ac96522c04924. 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/ARF411600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc34d2ea11489e2d85307b2ef2c6ed02ed985488b583d514db9595d5fc0867e. 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/ARF410600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f580ea8cefd06fc6b9b3d6ac84a4b9a9ab6303ba899ff89a95a9b97b4a8eee. 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/ARF410800483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035f382477e8a32f257c67a5e2937de963dca9032dac88105602b1a7cf7886a9. 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/ARF410500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d0400999df73c61d79f1c4aefd063ca2c5e7c51ef6efe937b6a1c6a14ffe19. 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/ARF412400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f580ea8cefd06fc6b9b3d6ac84a4b9a9ab6303ba899ff89a95a9b97b4a8eee. 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/ARF410800483.
Since I Don't Have You - Unplugged Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1003a38ba8ad3ce55cd59f25c0b385c2e1923a468eac07661bbf8e9a9a64d5. 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/ARF410091114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1003a38ba8ad3ce55cd59f25c0b385c2e1923a468eac07661bbf8e9a9a64d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF410091114.
Let's Spend The Night Together (Summer Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd88a60e694255d56a79d9a734c83781c0fb3c6eeb1eb228392444b78999e2b. 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/ARF410091127.