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 0x9edb5efdbcae2f728e6d0a0557fba4730a971a01a3fb75b52fa6705926a72217. 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/cec6b9f4-c47e-4d90-b4bb-c3b8199b5fc7.json and https://artists.proofprofile.net/proofs/artist/cec6b9f4-c47e-4d90-b4bb-c3b8199b5fc7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x7b9c4438560330606f0b2c14b1c8e2b57938a593f342ace095a156a15077a681. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdef2670a1d24702b0a0230f7b06d62ba0685f5af7131c03db1a3ab47e88622. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046302 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ec6ee16df2d99ac90029855c88601c5207e00ffbef97ae67c3b1c286b0f5d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046304 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48318208a7fb41f86a3d6658491f8f9ef2587bf70c294e4a30e9acece19a77f3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046305 — a six-check JSON result.
You Can Fly! You Can Fly! You Can Fly! - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d0d0616ac2671d389b1461dbb35ac8c3ea83b373431c30149fbd5c39701b56. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046309 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d180afa7ccbfc55d32a37af9280e518f06cbaaf8fdc6812870b18de4f00405e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046312 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6048bd0f0fc19cadc77b736c28be3da91d4cf02b995eb7dda378ab5c2dda7bb4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046314 — a six-check JSON result.
The Cast of Snow White and the Seven Dwarfs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66454b9deb819783d5747c13b614eadb7f476ae4847a04badd450f8da1bfe812. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2046316 — a six-check JSON result.
Overture (101 Dalmatians Animated) - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27863c67050a6560345a41fa102d6dafa4135a656f323102c88cdd2ae5088aeb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060601 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52de8ee127a5fb887baf03b2fc8daf10118d1502b72d01e1c400dbde1450259a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060602 — a six-check JSON result.
What's All The Hurry/A Perfect Situation/Stir Things Up - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1bbe0cb4e80a56835b1e8aefa00ba86e3d314baa3dd9ec69ba826412b4f3d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060603 — a six-check JSON result.
Cruella De Vil [From 101 Dalmatians Soundtrack Version] - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693115ffcbb0942bb1e45f4c1e76f396fb793a53790c250397a8d809fc320a07. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060604 — a six-check JSON result.
Don't Worry, Perdy/The Puppies Are Here/Lucky How Marvelous/Not One/A Bloomin' Hero - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aad73fe65f001f33f42c87d09edfc051a99c1dc5b6b14bc1021a73d130dbc2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060605 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349c99e3949de8b2f21f97655bd506edcca6f046dbb62e94e1900a994da13cf1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060606 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628133dba4eb7c2df9b29c4d3496071fff405ea18b6c1f99e29bb1ff9fc0774e. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060607 — a six-check JSON result.
Bedtime/An Evening Constitutional/A Job to Do/They're Gone! - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab72226f0f9db6640b7a95df76d93a82a7babd07444032855e0d10a573e4a6e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060608 — a six-check JSON result.
Dognapped!/Anita Darling/What'll We Do? - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caddc84be2065fe1a2f4f95004d69be29dca442af7a85512e0e78d6ff0b4895. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060609 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6f3432921c686fcc7c5b508e4e3a727fcc7bf1671185df31759d35b2929204. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060610 — a six-check JSON result.
Sergeant Tibs' Recon/Cat Casserole - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe301f787ac620ded7302077cdaef55f09c29a82f7483859fac8daf0600c7a23c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060611 — a six-check JSON result.
Can You Leave Tonight?/Arduous Trek/Any News, Colonel?/I Want the Job Done - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155a333b35cbcb93bda5d61c46f01c1e2ffe6ce90760a758e3e391517d51ae01. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060612 — a six-check JSON result.
Pulling a Snitch/Big Hullabaloo/Battling the Baduns - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8ae99d20c0c1b8907c9767c0f03b6bead988b2aef02e2d1596692838e1a9c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060613 — a six-check JSON result.
My Darlings/99/Better Be Off/Fire One/All Clear - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bd7e1b3d0430b78081f8d3989499a549388d117feaca1f419d3d40326f234d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060614 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef646ea6414544c0e5223e1de2cbd09c064847d662f8afbbc4e8a4aa1b754b2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060615 — a six-check JSON result.
I'm Hungry/Get Some Rest/Back on the Road/Spotted! - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eab8ee1063a378b632707265045816d4a799db4a8a7c1e420612a622a2f8c6f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060616 — a six-check JSON result.
Dinsford/Cruella/A Roll in the Soot/To the Van/It Can't Be/Crazed/You Fools! - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba2c7efd1e5525edce9418df8b773ca96488e8d39f3d2c24b366420f7d17c1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060617 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c2358a8442c30144f33b40bcd145525e9d4ed374a59127aa71c35b0e50e246. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060618 — a six-check JSON result.
Dalmatian Plantation/Finale.wav - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b57bd1a4f0c3942a3b5e8af7a741adf6e014abf47179d0e2d743f0ee93e6d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060619 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b9ea174c900da130c51bbf43f9ca8b2b5401c5ce6cd0f0915de0a2c5279456. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBACC2060620 — a six-check JSON result.