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 0x2a4a38e707a6fd5e5e478d0b3597c7fd28a1b61aff2ff658e67f1f6333e9c112. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5d09d6f-75f4-40a3-ba48-266cef5416a1.json and https://artists.proofprofile.net/proofs/artist/b5d09d6f-75f4-40a3-ba48-266cef5416a1.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 0xf6c45278cb21485e4ed8c921e48f72396dc7b4fd1792fcdce4ee5dd10f0819d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL1ZN2000835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb928379f7dd817f62d101b50f5c8d7935178be05429458a67efe44d44eb69fc4. 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/NLZ541900876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932fce046b144ab9cd77db0c3aed33c63ef3ce7ab02a0ed241ceec03e75d3f21. 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/NLZ541900877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb3e4dd6b31693df09d60bb1af9fb41568399c12cfbbd88457745839ae50d6f. 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/NLZ541900879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e032a68ab16fd3a5229c53f63eff29f5b15cb6cccc21ad2ca20eb1a7364dc01. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLZ541900883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202efe6cf0bce092fa5df989e7193c13360dbe1ba80506980052be91dc6c076e. 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/NLZ541900886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2ae60bd0aa115891412a11418187f75003be5fb6524316b32548dd91af4656. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/NLZ541900889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ade4041f13391d232a2df5fef10b388a1f1889e1eb88a0329455578c43658a1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLZ541900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7630662d0889d6137e9b86c2dd48dfc3dafacf71b82f0eb44850149da48055d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLZ541900895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a9724d7d42e4292023f0fa796115ed5fe2caaf016f0ab78488f0d349c0ffb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLZ541900897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540bca50a1a7c947e12d93f65e2e0a959e393c69c4e6d1fbef614e418501350. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NLZ541900900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35945f69cb61d1f8e6c1858ad4ba9a00caa5f0d18ca0e6c61a1111ea00e3732b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLZ541900903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b19a2acc563853d9edf8f6a6eab6009f548128fef950c223a995cfef73a18. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLZ541900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3bb6fe265e7aa8c6e69a2d775b0705a56489254d480b44506bdc336c0af116. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLZ541900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6083f6d8da41f6bce5eaea6084b7d046ae1b34798e47dacd637d2e11fc2b0e. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLZ541900912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd282a99fbd44ed99523160a9e9332d8a8ab73dbfe24558590ba18d4f55bcc893. 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/NLZ541900914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b19a2acc563853d9edf8f6a6eab6009f548128fef950c223a995cfef73a18. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLZ541900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf276081148ee85f22ae607fc0bc00baf842c855421953d4b33892f859505bab. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBSMU6330326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f81bbc9a51e915a5e36a7bd134c41115349d6a5e5f94afc5963788fae347c10. 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/GBSMU6021564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d89c2ba2b36fd62bf1e1d3198fd86fbaa1d5e04aec9ddf8ff236d733c533ad. 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/NLQ8D1800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93d53cffbf479798b68ec5d2d236910a704131cb51b08e6280675a066bdc3e3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBKQU1729885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700b935955e59aee0e14e373d96ef6b2b9c95b2716e18257d7eec55ad6f4f635. 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/NLL4S1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3483891d0f6e4ffd3b71c156ebf62f35755eb6d24e50cc21049b3ee68a6d2f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLL4S1800007.
Ferry Corsten presents Full On Ibiza 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa469636abb8d93e99ccf833473ee53eb041f9dfa36af16383c48443a3ad0a. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/NLF711502419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa547061392486e920d615400ebafdbde9deb91eb4b4df9349d8ad787ad9b4097. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF711500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74b8c24fdbce283a3b7afde5f5c19a61f4b47bad5cd271e8ae52309d25a1fa4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF711500888.
Ferry Corsten presents Corsten’s Countdown June 2015