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 0xffc28eba451ba16e247f18b4721e3013d5e34a80956606b031eb36d46ce70eed. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9279f65a-f0e2-45dd-80a0-84eff5df1634.json and https://artists.proofprofile.net/proofs/artist/9279f65a-f0e2-45dd-80a0-84eff5df1634.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
King's Melody (Tales from Urban Underworld)
Pobednička Himna (Proširena Verzija Ulice)
Southern Way of Life Southern Roadtrippin'
Aunque Seas De Alguien Mas (No Eres Mio)
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 0xae06d29a84dad4869c5a53dd82618d024f0e2952eeced8c4e69585268f7144ae. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAJH2580629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1fbbb774a8e8c346f5f69c48ae912dd46451591ec589084b604cda25a5a017. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAJH2580504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1211e651216f65b4ab431d225b9ebcb103e7a298beab537387e23af6fa612. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAJH2580513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05fd670e9ca099a71383227dd88d46590c2c21a29c571c0a78bb8efb6f4097f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAJH2580519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b88bfbafe8b955c0b05bbf99e83bc460a9b06e60baaaa82c41fc07b54801465. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJH2580526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620809c4ad716ee7715c780bcf4fbf723177c2eec61c81ed80c540b46381c98a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJI2580548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d7fedc48bb4053fe9e74b4f1cf8a0fbdd8a5345f56237368a67bea9f4adba7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAJH2549140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8a69a5842d9a1aa3b6e2c48ea267bfc3d297bbfde40e66bb4bdaebe9567793. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCAJL2577012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a002bbf4e605d9fe1b5380ba20cd715220ad542ad56a94cf649593a786f08. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJL2523254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2227c3ac0006032fccaf4226a5259c2ad6acb40f7f5737755f02314feb004a0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCAJQ2544191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ea7ada9c2250f2a4ec042c3602fa1e4a2222ee1bbf83dbe9680fe837947ac. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCAJP2544202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4db0b660dfc764672ba25aae204f66b9e12bc0ec738f29e4db89ea583ff24. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAJP2544211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3946a1bd25a48d326b80de862f91d877f94cc69ea89cefff0942df3511668cb9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCAJP2544214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbd7a99492a90e403493140d8cce41637c974a815be0873553da88cd2d88305. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJQ2544217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4903717aed8b8c0529eb19377e304d19636ea898dddb2d6185ff6c91c73333. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAJP2544221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e27be506f0bf704b6edbe5914f9a428fac9829ad5a3f3cc543d8ec7524579d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCAJQ2544225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce581bbb9a321b375f0609b95754e402c2458e26bd8ec24f86bf6af47cc5a9a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJP2544229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8e3015c2c6bb3fb9d35ddf52380caeb63ace690e710dabe55894900dc4678e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJP2544232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b5bbf8dfa2700b14ae5284775dff24b90367215f5915841893799a616972e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJP2586091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087e3f9edfe129cebfef59396e03aeb603d432e52635649d63dadbc26c426634. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAJP2586110.
What Would I Tell My 5-Year-Old Self? (Childhood Memories)