thumb|An animation of an electronic Aston Martin speedometer's self-test routine, showing how an analogue speedometer hand may indicate the vehicle's speed thumb|A Ford speedometer, showing both mph (
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 0x1afc5ce625592c8f110e9dcd5309f3b8b6ece1bc7a264e5469af6102223a49f4. 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/a5417d66-ae9b-4011-a01c-3bdda9894953.json and https://artists.proofprofile.net/proofs/artist/a5417d66-ae9b-4011-a01c-3bdda9894953.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 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 0xcc04f895df75e8625bc9a6d0311c7c663aa69f6c0106433d7d5b2672494f5d44. 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/GBUM72307145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe51cae42af4a934bd8052d9c372b89c3089f3d66c6916e0a5d15fcfd1660e43. 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/GBUM72307146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75183859b9739b219feb99e98f8915050fbaede43bedbafac632283f21a6ec3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBUM72307147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db4aaf27271b61930496cf09a85f34d1c38d5cbdae1651c6b863bca3621184. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBUM72307148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c664cbff90d14f677d5b4eade4f3f1fa422529282977fed4922605a84940ce. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBUM72307149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93361b927ea5f63105bdd586d72daf8e443e593e1469a6119a37e702565b360f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBUM72307150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea7399231858ebd93121e3b3718f47021fd214041bb886bc6c1b0cab6c94a62. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBUM72307151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204597d766c9226e0e10d24d0ecd31fc7907602986d94de10024d52098f6a3a5. 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/GBUM72307152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc283f6c6e92bd69506d8a01136134d4de0c36eb2c8ca531ede6964d2834c91a8. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/GBUM72307153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f24c60f56623534ea4d4e20ffd00a046b9740bc753ad8424727d7c1575dcb7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBUM72307154.
The Shakedown (Say Yeah) (feat. Martha High & Myles Sanko & The Stilhouettes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0a987cc90a05bcca598d485b704f76cb4e39b077ea20f021dde8b1d44ca442. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBJSH1028207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b533e7a032df0d15628792374a66210351e3547a33b1a25a1410da1b32ca021. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBJSH0722406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d644e0b33d0d937dd199611ee6a0fb9e8e607fb3b50dae552b020b23020ae. 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/GBJSH0621607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347226747af4cbcd195fe06ce205a1b0eac9022372c2bf23204128d06f4657ce. 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/GBJSH0570302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ee392b9005735217093b5877e11fe5734d9fdffff54e27abb388b65b16200d. 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/GBJSH0621604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f6085f87150808b4c2d44de72a0b263bc6a2a4e02268b3acfd7f999c430a41. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBJSH1028201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368682d24a35ac8c5b681043278258b7ca7f4002833e785f3bfca0706e88d525. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJSH0722401.