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 0x1ff70d094dd66416f43a5b434a61df5d7d9fef738acfc287b332b441063e7a08. 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/1ebf53b5-0055-4224-a842-361f61decf4f.json and https://artists.proofprofile.net/proofs/artist/1ebf53b5-0055-4224-a842-361f61decf4f.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 0xa6844e245e9db138c1fa10d0b273877f2d22600eb9a809b6b9e6ec02784671a8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZNWR2126637.
Size Comparison of the Universe Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d6001efd90c217f6a9b7fecf80fe951d942867c8a646b88d2e6db7ee627c38. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZTAT2191589.
Life's going by so fast I think I might miss it
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2710077c4c31e2baf92160d6e24cc3bc2ae72f896512034e61fe39607b41d7f8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2404681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b960bdd2f69d4b263ed20121f03b2eb1f679755710c767c670bf16c58a284. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWX2438926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5b2d6c3de6da02c5835ed1d896ce36abba490f389a75688c4ac338b73c1d38. 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/QZWV32406362.
whole world against me (slowed & reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f47a445ec0706d5d75f36be9d6df8f8531664761e89b738d99fa55bf3f3af. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFN2436111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feffac83da2bca2d4630a69c08678e5f2bed7913c68548496bd9ad54dcc3dd2. 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/QZZ7P2445311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a4518cc9fda3661f89564cf4956fefdd4b9bcbae5220ec782f176c543d177c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZWFS2412787.
Chasing Kou "Drowning Love" (Orchestral Ambient Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063fe0497c54f33d0be0df6df71346349103260bc039736c233de0550a1739f4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/US3DF2542371.
Sweden (From "Minecraft") – Ambient Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2307f8856a3c90f6c540c11acab4ba0161f875ec6a6a4cdc5d0cb20b9db70126. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DE1H12501037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463cac10c29bf728bd6740bef60affb26b9e703dcae5b1f912bee4a605afdca. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB42557967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d01ae5462d129e0c53c99cee0bd6020703b00c0aa2c2d4ae96d2729f6af64ef. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ7L2566904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d49195c41644aa2d2370fa771846103d5e8416e57bcb2dd2f9f2d4923e192e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7V2512601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893bf9f32233f4b1f8d45afbc917f131792745c058e5fe025bcb166a49dabe35. 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/AUKDT2504164.
the end keeps calling my name (instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe495044e53b01d0a8829ea0b0a191c6c9226c9e25b8eeaf1af470c756cd2418. 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/GX89G2332632.