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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469a42714e0982c45b10f781a218d58459e656316d824679f8f9c51cc2887dc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14e93a74-36f1-4b5d-961e-ffd9d0f5e870.json and https://artists.proofprofile.net/proofs/artist/14e93a74-36f1-4b5d-961e-ffd9d0f5e870.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507bcdad89527df131e8863640d6d6c786ac72cf2ed33b86908c189950ce2d2a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBMA22022748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa451ae755cd66e65525474879c8f7fd5e1b503d2eb63838b08863960b2c9b22e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBMA22050750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20918366cf1ab0a33cbc620bb3363b4d4c1f7ed76cb3e6f490b374971c0d7303. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTH82185306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20918366cf1ab0a33cbc620bb3363b4d4c1f7ed76cb3e6f490b374971c0d7303. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTH82185306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6993200055e2537b8582edc9fca21e68bca89c531db33d60f09a52466aa324b4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2297499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2bdd3a550852af2d139eff51a8e66b35597d3f6e3429327bc7f1c108eaa628. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:16Z), 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/QZFZ32246443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bdc6d9bef157bca777ad7d0b7f692cadb5df8383aed0308e30e2d11fd81b3b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ42241640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21416ec8711cadb081887be1606bc2ade7afa8eca8e24478a72b26ccc0c98226. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZDA82295220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71da73092ff346255ad50f84422444574bb3449cd18378dfb1c2a04088a769e0. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/SGB502211925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0dc22bca85e3876ff78e6dd46f31babb47643b088d9cb7ac2c10aaca4e3f59. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2239576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0dc22bca85e3876ff78e6dd46f31babb47643b088d9cb7ac2c10aaca4e3f59. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2239576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64afd004b777c3cd2ec86f07d544c5f54cad04d0c50e11b8d1c0859533698b32. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBA2344634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad1996b1c9593f02916745dfaaa3120852b284ec0747e3994d1e9d8fcfc6a3a. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZDA62462467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9b1ba617eab416738bfcf0477176acef5d1d71da2ee2fd0a989614ea6c48c4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA82457620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd2da697131e664352bef2290702c0ae7c61910c7684f746b089781937ac1b5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES62458845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd2da697131e664352bef2290702c0ae7c61910c7684f746b089781937ac1b5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZES62458845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d96a1cf0975f46509328d1d008136b718e684c34fa1eae02ba9ad55e96fe9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZMER2476697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e571cec61260b02c9ea0e550687fa3f8f9cb6eacbfefc8db43069d171d80ad4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWZ2471520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3a9bb09494278765cec4661a3bb615f68a3396bc4878ec43e712645f26a517. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAT2478241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8cc39da3162711828c12e9ad942ec0e219cf628a63f601f1217900fdbac9ee. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAT2478242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ab6a63dca3191e7c34030c8bc5692c4628fd723c68e3a6920d197c4819e9f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTB32489786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe0e261328d1fe4e08cb03547b030062ece1634d4779dbe293053631f9e04b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB42475451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe0e261328d1fe4e08cb03547b030062ece1634d4779dbe293053631f9e04b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB42475451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ab6a63dca3191e7c34030c8bc5692c4628fd723c68e3a6920d197c4819e9f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB32489786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddce78b60de6addb2638932208e043dc120c63d9002440f2cad8d786711d9a9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB42475420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ef84e7316c0342cb903839fdd2fb69b0f3a03c94fccb5bca4069ae11e61070. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAUM72200299.