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 0x06eca89619f1dd1d74d494091529f0c53c79612a0a702832c163583056ed8122. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e17aa63-57bf-4e41-9611-5cbc9f73d79d.json and https://artists.proofprofile.net/proofs/artist/4e17aa63-57bf-4e41-9611-5cbc9f73d79d.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 0xb747e468813d09130f76f64e954db150231163988c65468aa72fc666a7eec23d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQAY2311848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0dea1ce848ec3bf9fe09de11539edb41b834b9558e12b21fc85adfc8b6936f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQAY2358323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8355b59954a95d98128d4dbc84560833e70dc62a673747ac892b259e155c6752. 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/QZQAY2382869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f9df1c11e36356e5571c685422e78c794c149b3ec2456dc00a6c62a68a1e2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZQAY2391260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95594ab91c41361d2f70f53c1f2ffa323188b07559540ac808ff0a6ca6bbf018. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZQAY2379831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b1123894eb0116b35996106b5511ecbefbbe8fac834045a49c231fbf5c46f0. 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/QZQAY2359857.
You'll Be In My Heart (Rainy Day Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a905c65c37b3376665fefe1cf5780e8aa8f0a64b9a9215a35bec40b038e74. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZQAY2395024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859572662912189d229adc3fb6a443ebda9662c5059786d917beea9818b7e5ab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZSYP2328810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ee8b3ccc8cc65c9b11215b690aab617d50cc115785e611a5852f09938d0853. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTL92371796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b44e351dd6ac1466aec7ef7ea05e648b958ea35e8e3231e10f84e2ef858221. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTL92397525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e823c63a420a0353c87ace49d41c2005c0e677d50537f5b815e5098c0072ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZS7J2326780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a356f8161fb050b60a49e40c5fc82b661231acf163ed09cad1a7c072fa49f8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZS7J2379167.
I'm Good (Blue) [Rainy Day Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae03aafef66d0ad9d27cf14e1908bbba7f45ca110b8f27b6384e75d3d9688a6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZSYP2368168.
I Ain't Worried - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb1bbbcd3a40e4496461abbab1bbcccaa10aaa9a5a1e89ef90954744bfee8c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZSYP2329616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f79a811ff9f0b3903a89a24177ab1929a9097ed317dbd99c8dd007547c1dad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS7J2375391.
Late Night Talking - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2179b1fefc4100cdba248699a3fe7fc24aff362d3c58169cba02462e163c7e5. 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/QZS7J2367881.
About Damn Time - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537063832bc995ace383dd3c10671793df4029453de50eba8d294e73ab208da7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:27Z), 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/QZS7J2353363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6058c030f974285a357a1efc5e452ab9eb188a552464c5f6f74805dc4e53f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZSYP2360081.
What Was I Made For? (Rainy Day Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64e9b7e0991ea4c39a18e4711d11fc473812c95b1e19ae11b928a1b6186b426. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:51Z), 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/QZS7J2497530.
Texas Hold 'Em (Rainy Day Piano Version)
Texas Hold 'Em - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bea0a5742f35bf22111674e9bb6817161f957b468ffda06ba17548661f0b1c0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZQAY2489308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b803d93a59914c0d0376be04d03ba09c5f5e5bd26b9b569cf82c37a7e5b1680. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZQAY2412270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c8daa7c7bdf8e1fc7dc5932695dee0b38ecfd51d815f572ba198faa6f69f19. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTLA2493068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7153634b91b91cb548a8768c40c72c2d470fc9c2e5201bc4694a4440b82ae. 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/QZQAY2425910.
Good Luck, Babe! (Rainy Day Piano Version)
Good Luck, Babe! - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb17267db8b57c46754898f68f5ebb3fc8ae70131c729b3a440ed710dadf5b0. 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/QZSYP2408363.
Birds Of A Feather (Rainy Day Piano Version)
Birds Of A Feather - Rainy Day Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a9f106b1b138395ed6ce0c95afed49c17019048316802e24b3c86ae88e538. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTL92416528.