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 0xc30a501990b94c862d1a0099cb57e0a91797d35f578d4367d91262d569f23528. 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/c751c9bf-c9c0-4731-9071-2ff16c78936e.json and https://artists.proofprofile.net/proofs/artist/c751c9bf-c9c0-4731-9071-2ff16c78936e.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 0x6d40c5269c21df8477804ed4eccf7ab699bfc39838c7944276220638345f9610. 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/QZMHL2380819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d89b25801d3531abc369e80e5fa190b5930b84bca6befd133c7d01329336fc. 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/GBWUL2188644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff70f5507324d3f6b9a79501fe0fe16dda7d5a7917661e9076c1ffc96b6d87af. 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/GBWUL2188645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf8076f2528d69a09569b8fd207b0eacc3c50a52d1c5f55c92702f08261c58. 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/GBWUL2188646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf0af803cb67addd837371e7ec32cf9c4a10bf1899e2a375f4c58a8c8f489d3. 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/GBWUL2188621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ac90595604de1eaab369da05010894a58bafbe79bb842face3283eeb913dbf. 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/GBWUL2188651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b73e27ffe731b60555cc868120f6fe1f29fc3347f2a3248bbd4514f09c23ca. 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/US3DF2273095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b88815c16f82cf72f4ac66acf1fc283ef501de2397b839ba07c1d4a73342db6. 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/US3DF2237019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d876b642e421ebbcb743dcb0d5c2ccc903fc1a567f9b80262a4be0cc2dc2201. 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/US3DF2237020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41772bba8209d0e021e1abfa992f5ec47760a920dc82ba13ce310a5bf7c03d61. 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/US3DF2235546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a0f920178e6afb5f4bece93d79cf8874c9d48ebdca20bf83dd5e97872d1172. 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/QZS672211045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44afa6c2c7ae002f4d248408111d700a90ed31bd87dc5ef63b2fea8ad54ed47. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672144015.
there is light in us (slowed down version)
there is light in us - slowed down version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21214fd8423107903ff1de073b0cd75b4d8b8149ce64802a871cbd21233ecc89. 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/USA2P2118237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a77474dcb5a602eef32fe66069b337dd5db9a9bedbe10e26c293b55aae3342. 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/USA2P2111856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee36441d2516d12f319496ff017faa0230b393a04e24563d02bb59ff68ffb7. 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/QM42K2045895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddb05cf08074c29b4374cb0f773a750b729b78414e7fe432da9e67958b31ac6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:03Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM42K1810812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fe9b6aaffa23b239be0e10ce838e8b488f0cb08aa7eebb455fa9c897917d20. 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/GBSMU4150294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d369310ed9ea23111aa171e5b73a3cedaf1f5fda9c76d0895160127363b9409. 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/GBSMU4150297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90654f5c45d23544735b91f242a996e185e1df8fb669a3b49e8ee7b0903cc79d. 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/QM42K1795864.