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 0xe8fdf3b0892a6798b1aee4bf3899a8ebc1e661a4b3a018f270ce483345e28980. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e033a401-d7ed-4404-9d65-00d0f3eebb14.json and https://artists.proofprofile.net/proofs/artist/e033a401-d7ed-4404-9d65-00d0f3eebb14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
More Songs of Route 66: Roadside Attractions
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 0xcffa2fb1f10807b896f5c8901dd9c4896925f0dc44b04d37b0a3a03db7c058ec. 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/USAKP0700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3047b43ffaf8e1600f0cab0334646da58c962772420c4b1de8534c44ce8190. 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/USAKP0700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699c2ff9adfeaae0344f271b0184d88b85fe448fdd0fcc6c6e030dc6e0b4631. 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/USAKP0700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40695e57f94b7a12c61d9d4d3d2807473a873a5f2e03f422944694c364de3bd8. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:03:33Z), 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/USAKP0700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e0e8fb10a5c3fb8713c83d2ffbf8e5ab52a5692e277b032cacfc104a16f3f8. 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/USAKP0700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b6d19fbc171443b5b77db72a19f13da89a1ad061d5d92e34200c9fc0f9b37. 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/USAKP0700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c324e57f32bc58969e7b8aa533114a8df2eee74752fb16329fafb7ae41ed7. 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/USAKP0700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe871e5b62815239f9a4a850aac4cd807db65cc5d2c4fa1f6239750e0c0debd25. 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/USAKP0700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9cb7b01d462f984c269106bfd34bdabfccba77ad6cbeff6cd3a2cb0d0e44c8. 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/USAKP0700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35269b50ccbf48b26083c7a732d8976529d5ddea97ee5e7e89607ff76616d5b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USAKP0700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e3f59aa55795c13f3005c3947ab3160e3594e953c799108bd4bb125ed8752. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USAKP0700058.
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 0xb2cf0bc41e287f369f13eec685b514484da11000c203b5bf1d904684eea11e27. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USAKP0700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bf659da2760edd3547f5cb7493597c333e29c197579cf67854ffe225ace550. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USAKP0700065.