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 0x21db91f7272bdd94df99c3947f05deab44b6d21d7d961064bbae1afd225f2cdc. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c3a1f79-c7eb-432d-93fb-bb4c615efeee.json and https://artists.proofprofile.net/proofs/artist/8c3a1f79-c7eb-432d-93fb-bb4c615efeee.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 0xe3695b6e55a5e52118d3540dffc756f8da02d41060e0e65363c0da87caf7a023. 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/USA2P2329769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba11ad0e7f23fb81847955b5ce4dc15c4606634226cb58adb1ec7e3f9cb9d38. 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/USCCW1611007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff101879ffb5219190d33bc56fc6ce062f4f01ca8ff718e6d970642b900c55f9. 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/DEAW12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602f8767fe6beeaee186bca904a6f2b8fa4fede37c89cc1ef7d139bb29aadfd0. 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/ES71G2308222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a995fbb27c6adaaf942235ab2f1a1f63dbcc0392c5f56029265a25425f0768. 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/UKACT2230242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9d9e1c366e605d9f25a1f3b8d01cf3fd1e468b7fd25678943926ac92e81ceb. 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/QMJYS2100714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4233627fdf87394a95e30c78c7b21c04867234d3c83994ac5e07e46c7cdc964e. 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/USLZJ2309092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9fcf31bb17bf8f9ee95988bffd554dd8b5e0304d565ce0589d0db2d6f88efc. 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/USNRS2242169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91589133c1928fbdc60a95e3c187c1d2484a034a64a7c9884c07277865db0896. 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/QM4TX2246612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93b3f2224832d23b6301f3253db7c2799b0a61946095ddb73492abc3daef196. 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/ITT742300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bad81ecb1acda5b456e1819e75fba4d4e88457f954b6c4e51b2fa68c7881b7. 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/GBUQH2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46500a546437821be6afe1366beaeb62954e7899991ec41fd57312dea038941a. 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/USA2P2044880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6fc6289abc1513efe2b71cae302eac3c2c5f9dbc7c5c923a88fcc5e96a86c6. 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/GBEPM2201783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab7f123bbc0e062471dc313aa1c9c7e43bdf8495190032324f7b3594f9d3465. 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/ES8742329206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a852e8b62c50588d756145040537f39d4f72ae34782598c13b6d939ecf66fbf. 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/HKJ962201578.
Elusive Realities - Alternate Sundown Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceed9dfdb728c2a0aec8ceb5131ba084b40da43d372f3353c1c2a273183adea1. 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/DECY52200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f56493a7c35c8c0dddf372ca823820300ad34abfbd395ce8c5e4fcc906283ef. 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/USGC62001063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71fc3a0ad054c004f465878d555f6400a133486d63a5d2724ca258c09eb8490. 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/UK38H2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a7ddaf5ea344b06fe35a7051615a800fc9bd1ddaaa5682fe667c5c8f9c42a7. 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/GBKQU2354013.
Pora Sotunda - Finland & Aaskoven Bliss-Ful Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a2aaad1a59d97b5e706c696c0e28dc84822fcb7617bc7bd7be03af8a93510a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF2128714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2cd8f30835ac93a6ecc1e2a4d741455699386723c3570011f155a4e94a2f6c. 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/DEL021670048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b2da07866a3587b9d4597812a78118f0c5eaf660d52fe6a4d6efcc08c8f97. 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/US83Z2200559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ce69802694382c50369857fc36cc52f70cfc17e38adbcc8e9a2f91b961392. 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/GBPKF2200061.
Midnight Meeting - Gui Boratto's "La Chapelle" Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006bf34d8429f3c3e928c81255cd3ebbd25aa7f6e5c960b0eaa33ef85477c38e. 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/DEU672201158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6576624f1fad8157395ee0659cc5cc18e9b976e3cae59aa435932fa07687c487. 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/BXD2C2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b97ec339358a6b923bf46285d88ad22479f96f815744401cba455235c1130d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXD2C2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ade653496f83b16102a755142ed7bcb51ad8150de2a321da31b83f566d99403. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBKQU2431419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8116faae23debce5d8473efd8f92c8692cc0a8b1aa1a646c4cb160d9f870e25. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBKQU2431420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568311cdb0dccaa7a14a3dd1c7da71a61864515cb84550bb697f027a5962e8ae. 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/BXD2C2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6111b57573192ffaf6afbb874c0df7ee37b48cfb224597e03ed4ad156c8ff8b. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BKKII2200001.
Midnight Meeting (Gui Boratto's "La Chapelle" Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006bf34d8429f3c3e928c81255cd3ebbd25aa7f6e5c960b0eaa33ef85477c38e. 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/DEU672201158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec669277ce8f90dcbe3dc958f8255e5985dd2770f77f718bdd6f8ac633bd012. 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/DEU672201157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006bf34d8429f3c3e928c81255cd3ebbd25aa7f6e5c960b0eaa33ef85477c38e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU672201158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc946beaf02e3e204fb0d38953a9e0105441135cdf85e1f55557a347836849525. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU2449197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393e899b3538ca647bcc2562312c5e91969d3de8219855ce147ba85165705d47. 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/GBKQU2449201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ec4e5081fbd94703f6c99549d01b8c4d61be3070f01d92e30fdc6a0be014e. 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/GBKQU2449206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027e833989cfb43f32514997e1ae8ce934b663d39e0dc805b36c95b8c7ecaa05. 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/GBKQU2431418.