"Sweater Weather" is a song by American alternative band the Neighbourhood. The song was written by group members Jesse Rutherford, Zach Abels and Jeremy Freedman, and was produced by Justyn Pilbrow.
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 0x1fd78660a94c28e833857a0ad643622d918963ab3cea072308e7b2af4706027d. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbc17bd0-6264-45c4-893b-6455bfaab0dd.json and https://artists.proofprofile.net/proofs/artist/cbc17bd0-6264-45c4-893b-6455bfaab0dd.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 0x647df5b95c02c965eac02d3b2f155dff8c45ef36db88d30f8454ba2a0bf2f5cc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZPEW2474974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8119c888d96585a5b81ca8fe68d03f852bd2b0ae6a24124075972dc080f17b. 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/TLVEM2405588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6afa5f9d5979a1508d4f777482a2df614e848dfdd31ed3888a2b231e05c6de. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TLVEM2436253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d39b752f555eb7d8747b7d470cc1a6e6b8e550a12ec0677886744eac201443. 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/TLVEM2466487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017aa66630b21d96377744610c3594ce68a0d686ad8776e682633728e0fdf63. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QT2VB2488228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d51ec513ea7969f53abdf4310ad389d2e3f308966f33f872a11531ae3adc0d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:40:46Z), 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/QZVEM1827635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c358ce4bbe8d6746311606faf28e3ff499ee22ac52b732d2210d54c105e273. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM1838890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb281ff07b220bab30a0cac467acd19733ec85ee475a112ac7f57cc0a990cbfc1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZPEW2516107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd57be6f88379dc156375ac1b55a580b5f2cfd2cfbd1e1d3c025520bb4e1f90. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZPEW2529277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95e4e39fb882c0a947dc559e41f038cb72f01447587d31ef2940068a60e720b. 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/QZPEW2557420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a874fb77ef53767d950630f33e3f987f22331988617f1cc895f09d22380f7c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPEW2579608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a613bc08263aa8b87c3890a126c42921b37dfa39e2bb1fd111d683ff98756ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPEW2590400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381864428cf4407bd11a0df5249323b5d8ae67b4eab97366646e0be8e4748b7a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QT2VB2504284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffb1e4628304267f7876c7e3029ecdfca0eb1f398cf951aa4dacf83fa09d11. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZVEM2523641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ec04e63405175e92fa125de1d8b9b3e733e4b4614099f5de7fd1fecdf2bbc3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZVEM2539307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b20bfe4baad882eeed04bd82af654f37b993701ce865aefb1e87dfd4f493c2. 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/QZVEM2551903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb512218c7c5866360c40a3cfb264f41ce5a8d5213fcda31b3dd51ba585d7de. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZVEM2567515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf021f36ae866b125f189ec6f6c3a4a6a9a92220cc8a36d80a921adfdfae9724a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZVEM2592815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8b3d108b08f954328eee03a8f6678ce91b4807acebf8c900b40384f9f3e804. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:20Z), 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/QT4K32503482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75c69bb15f6c9c621437a2327d18ac48f20fc9a1406e274b0377cc466270c82. 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/QT4K32525313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639c2028b10ed9af6c5fe825b6576e826ee8e35e8e06f23e01ed78a298f19e19. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT4K32551944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c61c71ca81e48ddcf054155288583dbd9987769297db5614c8a15a8079e2579. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT4K52503555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63c7021158848d0a52b69e640282e212311c83612a3b9384c6173f9d52608c4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT4K52574030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab46575c48c6337a82addce47c896ea08ae2e08c2731e2f92bcdb1f7b633f62. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT4K42533439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81a8b9f01dd47476aa4bc9f13b75805d1a3e62283b89c4a02d63fe8ccc729c2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT4K42561165.