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 0xe8e70bbaf99a4e27dd55b8a6c5a7e0b58527c2678a51e85468ab9a78f14eb269. 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/9578fbb1-8bf9-40d6-bf10-5390ff9f572c.json and https://artists.proofprofile.net/proofs/artist/9578fbb1-8bf9-40d6-bf10-5390ff9f572c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weekend (Party, Sleep, Repeat) (LIZOT 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 0x667e93149ce2f00bd277549b2312a8cf59cbb7bb7586e60e3bc992bdb6389e29. 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/NLT2H2200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a41c1f75e9835cd326ed07d605ce9ad10efdfac3d29ecce67ee1fff3875164. 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/NLT2H2300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e87e236a288c860b6e7b59eb15d882a77b6dcb235785be8d00625f650df104. 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/NLT2H2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb20198472ce5e794dddd44e1ce505fc5975d3aba85a5a79db2caf414a4fe01. 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/NLT2H2300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ac9ff374b0d58216a30c2b88a01a2520c7381314b4f1b4f3b937f3c9bbfbf1. 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/NLT2H2200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feda82306ec34f9203354aabb1add17750a2bfce051806639f875273ffd9bd9. 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/NLT2H2100364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05289536c647d369188ed589275d23abd94f1a78b98995bacb49e9a81a210de4. 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/NLT2H2200347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fffbf71dc43069a7fc40bdbbda04e1bd2b2505b8242f464af60b8109baba676. 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/NLT2H2100487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc3f5e678380e618b7e7275f62298ad65cae30110914f6ad1ccd5252e90978. 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/NLT2H2100961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa625257e8292f1b5fa5c663cadad55018bafd0c4aceb5e9a992c8a388f040553. 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/NLT2H2300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0105ba44411534974523d27933fc8fa6b83eabbef68c429b13631c6b503fd. 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/NLT2H2300257.
I Don't Wanna Be Your Friend [Le Boeuf Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db65a1336377ae92b7ca04a543e5fb185159a7ce531af8cacfc954b66824d11. 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/NLT2H2100816.
I Don't Wanna Be Your Friend [Leo Salom Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5931e5a279b8065ecc63be0522b59ead238cc0e1c38c0a57124d7858a426c10a. 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/NLT2H2100817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e25d9ca5637e3e2354b16f7abb1193b8050fda590a544079f1b6b625ad48c3. 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/NLT2H2000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37edfc2ec8645f96a204937844acf3e9ab98dfc2f7aab193cf522db728bbdfb. 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/NLT2H2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572b7ee0fe3e2fab403a17ae30ddb6ad5c624182229044a7493e083b8dbf2d5d. 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/NLT2H2400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34cd63315d64ba31aa6c8815d231519fb576de25be157b0af1dead6fb42320. 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/NLT2H2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67b66f324a454946beafd753a7461994f5197a227db79326930bd3c3d334dc. 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/NLT2H2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8b0504db896b7f734052c52b37ed547ebd99a9114f413354a06e6c0cb3ce9d. 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/NLT2H2100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4bf61d0ad58de4a208c40766a6010ebabef8875890bc8455f157a31fac15d8. 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/NLT2H2000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf286e53834bc08507d78543bf062bceb0db64c981be4f355e7455845cc08bcb0. 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/NLT2H2000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838fdf3c83e39db79fbc981e0197f0d6581b9229a3da360124d96b815036094d. 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/NLT2H1900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b276219f76af9ccdc9617e1298da1592e7aebcf143f26871eb4914e5f383822. 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/NLT2H1900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae3ca9adaa2e6472c5b84db8b3c90e3b6c3abbd623f2ea83b4a6e0afc9d3bec. 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/NLT2H1900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94382796d42f12637d162bf913d978e91072124cc8a0190e3d4f891ea24837. 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/NLT2H1900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9bab733f19afcbad4f38ced4db4563b4fe111fdea565aee6a415ed67457498. 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/NLT2H1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4301d8c84d23ae258445105e80fa1270f7e8c891b0ea2dfbadf773a62cd31f. 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/NLT2H1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664cc02c01accc968a4ce6b6555a751ea440bdb424b3b569e160566519e007ec. 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/NLT2H1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37807829510da40f05d464caab720cee50f26c4b95773ae9925c7f5f5b3423d. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NLT2H1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afdc013ac29557cb4629fde477d18c5de633fdc7e7ad668ba28b142b8c9f8e. 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/NLT2H1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca6b286a72400e7e7bb7e705d3896069cbc56c6b6fef81c77d59701f8676261. 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/NLYK91800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109ffe6ae4d6460f439d85c91025235c3de398c4829a8f8f53060bca4f25db7. 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/NLYK91800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd50af0a47a51005da2170cc2c9e95bdb5d7e9742ed56ddce2f2f658205640. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLYK91700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb870682bc8b8e9f3cac8d895e468dc06f82ba42b0d9ad070bb5dfb122f93ffd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR1557301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ceaf0718aecff69a867d5ab728f26dad3e6be72df93182a2f8633c1e4e4513. 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/TCACQ1696103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f4f2ce3c716bd9611609c39d4f20304054f6a4a3d2a9199bf05969a7529b2. 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/NLQ8X1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e28da43b1bd595086f46a2c7c83a18620698b8cb509f20ab211a073ab6860. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLQ8X1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57285b8562fb4b7aaddf6a4f4d986e0144b3a98c96f6c5d926a7e3fa3d1b531. 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/NLYK91600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30ca01923e1909d58fe05bbfc1ad2ffab870b9cf4d7c8b123aabc45ae034fc7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLYK91800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c1bb0ff9761abddafe04e6b566c74434db4f9b76f2a9c8fe9033115aa80d1. 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/NLYK91600008.