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 0xb0b1afa3c9ef57d180ad33379c662d46544b616dc1a511945a600a51981f77c8. 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/a2e6e1f6-2f95-4a85-82ad-ad09c889606e.json and https://artists.proofprofile.net/proofs/artist/a2e6e1f6-2f95-4a85-82ad-ad09c889606e.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 0xe8b2f12176dd9b87ea7d470b1ea936dd8ed1fd7b8a2678f7b46a9b1bb800a35d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR6V82286867 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e6412e915c68a1091f917b09c2e18114874e80fd91c86c0e24685a853901b9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V82286868 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0384933bd50ac1583cc0f036a050e773074a2b8211234a078bc5f5f3876e1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CHA011900014 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9986f69b3fe54bdcf9922e23f937be529f433bb376780d13ea602112216e8799. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CHA011900012 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e788b284a64964ca0ed2039a545d7afb51ea4a010c935b570627ea7fd69648c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHA011900960 — a six-check JSON result.
Ain't No Sunshine (Camilla Sparksss Cover)
The Sound Of This Place (Ypsigrock Festival 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9893c41bc17f710820e3202243e0e3362df8ae8b7a67dced5fae768f966babd. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02314559 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09d454d0198ba00b2718cb3f3bd181aa7ba817f8068a9483d887e2ff00b2134. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02314565 — a six-check JSON result.
My Way My Love (Remix by William Basinski and Gary Wright)
My Way My Love - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f779eb141e5cdee847821373979cb274c1d155651c248dd07175039703e638a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02500005 — a six-check JSON result.
Lullabies (Remix by William Basinski and Gary Wright)
Temper Temper Mother Nature - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c944fcc8c58d7b4e301f53efccdf9aa44b0b953758e78553fed2fd674230a56. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR5R02500001 — a six-check JSON result.
And Blue Again - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf443c35d8724b8445adbbcca3ee5d0480632072f41358ad4a30f26de52c236eb. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR5R02500002 — a six-check JSON result.
The Imaginary You - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0ac58778f2b53ca080b9e08968ee00aabf9c725dc592734e29b06d8a5c42a3. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02500004 — a six-check JSON result.
Hanging Around - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2643ff8ceb6415ca87f260c1038f26e170bd551adbfde862b7e6f8d6874567. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02500006 — a six-check JSON result.
Six Is A Lot - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb78aab4558ea1b2d625af10c39f8e20eae9d1f3f87ba786bf16c7ad84df66d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR5R02500007 — a six-check JSON result.
Ode To Those Who Can Touch Their Toes - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1c834c6aed30ed9b7587ade6be6d5b0e709b82ed9bbe0873d82e49e8510ac. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02500008 — a six-check JSON result.
What A Day - Remix by William Basinski and Gary Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2b1e6a3bf054c3199f1555f023f6ac6249362974d0900255829e9ed0cd1749. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R02500009 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45bb561cf15f0f7079e7ba5af82cda770ad07b1f7e29d9343ff8ee5190d1ca. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHA012500281 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66904f85558bf3f0f53c8ada9412d5bd66be141b3488226c061464fd7a1ff066. 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/CHA012500277 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40476459a27eea6667ed317908be12191a14928989651caf6fb360444742f4b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CHA012500280 — a six-check JSON result.
Gilbert de Clerc - Camilla Sparksss Flip
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d958b3c1a28b70d2f89613ea11a54093ea9f198b9711c070422cd6105ef655. 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/FRQ031614002 — a six-check JSON result.