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 0xbb63a7e554b4d266c167aaa78f2164df8aba72f9c317bf164af548764060fd4d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7de2892-9726-436d-95de-0fb7b92f6ed5.json and https://artists.proofprofile.net/proofs/artist/f7de2892-9726-436d-95de-0fb7b92f6ed5.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 0x78d4b9858b5320994e6a6610d93772b456324238d9fe330886040d08630fe49b. 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/QZS2U2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72fb60892c2e4dc078fdc6a2356d3ca9219ab96dba2ab6e4f153606a4319a3. 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/QZS2U2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe256fad9eb8c9ed12469c8ce196f5fa6ff55f576b28ea90816f5bf618bdca325. 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/QZS2U2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f995bbf2b2ebfd45d4d728bb8dfddf4abc417d4ce0c4a861b68ba6910223140. 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/QZS2U2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2bcd4ed6a23ea6b0d122ddf06338876b0a1fad19e4364599ac7e98585b6d51. 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/QZS2U2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ca0862c153b377396bdd9d8a2da0d2f23f4b99635d7afe358c72234fd5c5b2. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS2U2300029.
Do What Only You Can Do / In The Name - Reimagined
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652986e58a74f7c92bbfe5022f81d9fa7886e46d8ebe563a3215892a8f97ca52. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZS2U2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2bcd4ed6a23ea6b0d122ddf06338876b0a1fad19e4364599ac7e98585b6d51. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS2U2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ca0862c153b377396bdd9d8a2da0d2f23f4b99635d7afe358c72234fd5c5b2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZS2U2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72fb60892c2e4dc078fdc6a2356d3ca9219ab96dba2ab6e4f153606a4319a3. 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/QZS2U2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f995bbf2b2ebfd45d4d728bb8dfddf4abc417d4ce0c4a861b68ba6910223140. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS2U2100047.
Ángeles Medley (Todos ven Su Resplandor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438e2b91fafe082c4ca82b5605a08a5930e9a93d8a61f83cb354093e300f8348. 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/QZS2U2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6ed28f6ffd67cc4e9cf91799a1b7d35310e31dabcbdc878a96230ab66e297c. 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/QZS2U2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652986e58a74f7c92bbfe5022f81d9fa7886e46d8ebe563a3215892a8f97ca52. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS2U2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2215b96fb5b207149de6f3a5bcf257d2b71c29d67319e9c0d4d4de4af80dccb. 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/QZS2U2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6ed28f6ffd67cc4e9cf91799a1b7d35310e31dabcbdc878a96230ab66e297c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZS2U2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438e2b91fafe082c4ca82b5605a08a5930e9a93d8a61f83cb354093e300f8348. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS2U2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72fb60892c2e4dc078fdc6a2356d3ca9219ab96dba2ab6e4f153606a4319a3. 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/QZS2U2100041.