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 0x9a8f6537f8c949a628be816c0e31fe803739a525a785abc759be126569941983. 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/2cad4942-ad6f-4c32-9a93-637ef6fa0f85.json and https://artists.proofprofile.net/proofs/artist/2cad4942-ad6f-4c32-9a93-637ef6fa0f85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Love Can Be Painful (Archie Hamilton Remix)
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 0xa4cc9721b9a5343f77c3dd0573d58417e50701646cb80c8f4a0fe68013d172b3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2428825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f3d590b24a214923ee6e3ac169e4d5c48478d6cd43754254d711c333d9625. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2428826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58105efe8c621b2d48b887558e73b6fbcdaab0df61128ba5890f306ffcf54ef5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2428827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237e3fe9dbdb0e6ab61b7a73e5689e669e489533cbf2e100819ea89958519a2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2378961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76209b2bda9e08e3c82def7db54c10be5a0f9258cd0bcb6033d970c210c88957. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2378962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad42f17714b9c9dd65f9d0507921f4c097461cd41cac6b8243ebbd9f5ce54f9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2378964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb477f0336057ff933e3a3022f2e8ec5a271d87c51259ebcecbfe274e4f3ae8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX8LD2314276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43e079fa38fee7b6c70f51c46f2d60df98e947bd10130fd5eef40cee03c27f6. 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/GX8LD2323631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b529d200e2e9a63ea5a9ec7d8d49e9623c9880e6c50b3bab1a5ec3d55f4de0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LD2310140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ff66764e38a686ccc9073036a39001b3988c71d99f2c0941e84d81ca57d3f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LD2339764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79059fee933c26bbeafb36ceae0092af198eba6e732ebf7ec2ea80df86f36e04. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472280004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923657b150bbb3ce7e2d341096f957b0a5b2740d7847b956293e714864239334. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2242953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0f66f9fd4b11290092452eeceb070b7b1146166e43643511a32cfafd0922a6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2143236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d08aa1b3f579112be78e55642af81387bfad0af5183a06e293f560deec7779. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52102445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfa4c26602eed649ae545f828d54895ca97a742c280d1afcc1f793b70c75ec. 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/GBKPL2033150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff050f3f5a048d3e1663f29f62408d42f78b4a264f6aa36fc7068305e46dc397. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLV62025874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e04839f5eb118ac0f0ffb4fe7611cfe4ae7b9b9010d26d36578abd5f302f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2039343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe758395affa4584c228ab0f9a2a39de9af95ec2f665a1d41aac4ddd6aff7b34. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2018379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e86501a79c8ba4ff21365cea69e0538e9f91296125f93574ab7fe44373aa98. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN81925764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc55e7303ee41e95f458aa0551771cc07f95a374db8cae84114a0e2b5e37a20. 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/ES94G2001206.