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 0x707ee4872e6d9db8e7b25aad679925695797dbd57590f8b164b7033119021f3a. 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/e22ab6d1-3646-4ada-9637-2a4808a1a88a.json and https://artists.proofprofile.net/proofs/artist/e22ab6d1-3646-4ada-9637-2a4808a1a88a.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 0x689c754a59f33e4d0d73d8fe31de854c3e35cda4316caf80a9d41aa694d4426b. 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/QMPKX1788915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ea05f6cfbbb4b56d8eb633012c365f68e9c01754d2ed33ca12e4a3462dcda5. 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/QMPKX1788916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7e6eecc9dfa3f2517c58b0cbd72d0b400f8d161d28df905a47b070230ca0d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMPKX1788918.
Brillo Más Que El Oro (La Bala Apuntándome) / Ahomale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72f19a855b83f382ddbfd2cdaecdfefa24b18c6f6bdee38776b9c425454b6a7. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USEP41854001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d1757cf8f446598c6cde1b5d08061e8c90829112045d1233fb42e1bd554ff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USEP41854003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aed4f8d6ae3a202a558c448946b0a66c949f53ffcf56e34ee854c75ebf43d8c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USEP41854005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c6de7bed1d193fec0131d1c97627933bfe72b7c3146b2d1960d00b0a9d306d. 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/USEP41854006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50998a9ef2d872606429790847f898ff9a721b825394034695d3422916361b6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USEP41854007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f208a1a02749892eccfbbea9ecccabce7198c629ba51cfe9e8b40472753ed6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USEP41854008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0e982964ad0a6193749e003f85dc37cfe90910ba6df0a30976a7178af6cb8a. 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/USEP41854009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87e7a0d93461e7443c22a8e5f1c7d1f7f403ad8ee34252ccf11d77f38511857. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZNSH2150048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d0c69f659d2ed3b21131a600562a88324e5383575b81a7c26d0e33e77cc278. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZNSH2150047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87e7a0d93461e7443c22a8e5f1c7d1f7f403ad8ee34252ccf11d77f38511857. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNSH2150048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd3a0d202bda5018c31d9e2b08844b0cd0c39f6f46da27d417a3f9b668d7443. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNSH2150049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ad87877bb4dede338a580e643b12eba2e68fbd058f2b65dc265bfb284048c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNSH2150050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0391220346755c975d461db297a7da41bc3083162a1f812779da35a8505cda. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZNSH2150051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5bb8e5664c987f7054a03902af3548c66098273ba85282c51a8dac88b7444. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNSH2150052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c79cb42aea60a3946ac5dafb8813e8c388102bb12c4edc25accaf2112f670e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNSH2150054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d5bee6f976f8a055ace49dc94ff5817b517684eeb527c9815adf3860996b93. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNSH2150055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35db19637b93e175bb3fe503b82296a418b9ab875e57a8fe2f529f48fc4aacf. 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/QZNSH2150056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb96eea9d4ccb4cf185e34089744f19da74bfe9d107eab5e91fa197992de007. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZNSH2150057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182c5d43612bcc25745afc09b31c12c51059d425674c90699d12e149bbad5707. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QZNSH2150058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2982fde8f64bdb02397e7eb6a7b99769d5414d4e8b56598add09d6e746cbf2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ5FN2472098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cd492670cb79d8ac901ff77202b326f38558f2e819be82b3e69be2d8a36276. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USCCW1611326.