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 0xd9434605badbb93202ea53d76ce064998f21919af97e9bfe2694c99ea93ee8c8. 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/0bd5aa87-cb41-419a-a5a6-6ae722866f00.json and https://artists.proofprofile.net/proofs/artist/0bd5aa87-cb41-419a-a5a6-6ae722866f00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When It Touches the Heart, Everything Resolves
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 0x633e616d2a42e7a100654261cd407eaaa35e0dc607b9d7adc5d705ac76f21e68. 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/QZ5F42300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4006741638c3fdc2722751e713f3a010ad86b95486f607a13dd03ac3b4253. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5F42300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb96fbca3c981ea2ec7520c239ac156f32cb89ff03ec4aad851476101bda1c09. 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/QZ5F42300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec51e18f9f4d3c828056611b4d6e9564250c7bb2096ea0b8f8c570dd4aeda56. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5F42300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09530dd8b10320e297261cfdbc9edd3dc35145eda59ae0be626989fb629144d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5F42300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd24748950ed9d0d43625ccbe977fe1f4e12dfcb9858c044c3ae141a96c02689. 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/QZ5F42300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963cfd39ebe0d65a6b0f911df133c3e1bf45a3cd2f11f3e0ae50cce31473717f. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZ5F42300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869b11f32a6288ce76a26d1a3f157a148a7cc3b877d139b3011e4aee9159642f. 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/QZ5F41700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e88eb73db12c6abcf69b3d4a50f9bcdad2e453bf5d83f496631cf37b6136c6. 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/QZ4JJ1624670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81041cd1f62c383f1a98833df5e4398ea8d41972499d0cef255966cf5c548f62. 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/QZ4JJ1624671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2925422949d35e54c636404fe2e71ea42647eda1b9f22f0994add32a9a56e19b. 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/QZ5F41700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e9f33b018aca9e2ca22826969491ec4353ec9408d5c55d2aa537e4edd14a38. 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/QZ4JJ1624672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e616d2a42e7a100654261cd407eaaa35e0dc607b9d7adc5d705ac76f21e68. 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/QZ5F42300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb96fbca3c981ea2ec7520c239ac156f32cb89ff03ec4aad851476101bda1c09. 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/QZ5F42300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5c7edc2d8ff45ef134d00a9ba85b646fc255293f1daefb8f5f103922fcf47f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ5F41900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ed6813228f607d951c1350d115a61ebee57850b73e40430ae9011f69ad6aa. 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/QZ5F42500021.