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 0xc3e02ff376918713f1d127096d8a751f842ebd8a3d79d0f233329d25843f2d01. 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/95ec7cac-bb1b-46f3-8899-5eb6c0c01765.json and https://artists.proofprofile.net/proofs/artist/95ec7cac-bb1b-46f3-8899-5eb6c0c01765.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 0xfad135f5a4bcd409795f44fd2a4bee1b0634b0291f3db44f71b7a7a299234fb6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMBZ92473749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9588ce57368c6d2c66117c6273fa5846c362fc6e697b305e59fa89cf7b97e14f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6P42415556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adcc6d1442714043abf071035658dc2afeab5d13748f744732edb969fa8432b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSUB0673102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafbc3469d1b9ea8eef78fbbb5b90a266c645d423008cbe8052d9e321bf64cf1. 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/USSUB0673103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ecb2cab3c34e32ff8a925e5cff9f65de7d6b14037be434d101441db2158d6b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBAYE0700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78a5a231d9b43d0747cdee87f4f3d1c10a179913100d9529d57ca91b3bd971. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAYE0700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28cc491411d4a9b65b1e3dc94c4bf822a03cf59fe4ee0d3d54e91bae7097818. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GB01A0801687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec22a24e552a7edd61c2c43121e1a3fb941c92dd23e40e6c1db7d78e1e536956. 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/GB01A0801694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae42d1b59b54599e2c900d726d1d4888dc6b128784d6fc47443463c21534493a. 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/GB01A0801695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b52cc998e0e40b4e75792a59220202a0fd6ac4c0a9d096e208b0b45990edc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US3R40917103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ecb593744cd91094ea65c101f4420b59b671bf8ad99853fdf7623a3e095811. 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/SEWSN1100106.
Everything turns to you (Loney revisited)
Everything Turns to You (Loney Revisited)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92d0b6dd856ad48ab954ee1026c0212d146583fa6fb372e47ab1abdac7496c. 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/SEWSN1501000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb08aae2cbb920dcf916f18385a073a6d00d5469984545b98882ecd4aeed47d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBCPA1701448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b4544f0d869481914d6c429bf1171f99ccf559ba1aa98dcf9727dd4e3442d2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBCPA1701450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf050e6413bfb584acf5830ff4b6f1c585a7072e50a0deebd2dd26cb827b8776. 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/GBCPA1701452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc02854cee71982061689aaf22ab27c6fa9991575b06ca849d1db5936397e66. 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/GBCPA1701453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186a1d3a30de0b2de510d24021c4e6d9f15b84168617250f44afd89aed698a10. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBCPA1701455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e3e205af0591f703146df2b790bc12f6c6518c2624614e34aa21c6bd9eb60. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/GBCPA1701456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb6afb868bb64d8ae0cc22b41496d3611fe87b6c6dc1b6afdf29ddaa5bc210e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBCPA2001514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ba947468cd42141b217ac9d411d411a508816f10bd9ad64c1cefe5d8b4bfe5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBCPA2001515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590dd8aa2082f2e037f99a1feb5264c8c50e534a6bf42632ef8de906b5ae96d4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBCPA2001516.
Go Easy on Me Now (Sirens + emergencies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709be233cc0fa1a98e5532266e33b302a52b4311b7aa7b41538a001241223d4b. 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/GBCPA2001519.
Last night / Centurial Procedures (the 1900s)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35248f941fd898c7f0202baaf987d3ecced5e7368b41b0b7bf415788ff3aac. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBCPA2001517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8955f60bc22ebef824c3646d0034618adda61775e0d8e09fc6c100b414445bc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBCPA2001522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dfcb233be178362ab78b14a0ae8696cc95515ef41f887057a705f6cc7d9bbb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBCPA2201750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2a7b1164e2ecc1b0e7ae7cf48678faa2ad8f7e89f3faf5d455028e903287f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBCPA2201751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee747e08cfa70e7bfddf34680f877ae65435270e6c0b071a460356e4f3470d69. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMFMG2369539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0e6ce7309af2b046ca9b44f4931b79ba273fa1e431795e5b81b56423c1b105. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMFMG2369541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8205ea978ab38427d118233c15652d84849d9ce7b297d1a1f92f830409cd2b. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QMFMG2369542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc287027e476b22818fdc88698bca4cbaa915316eda0ff02f2405135a1b583. 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/QMFMG2369543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f59aaec2b9d80c3d096db60ae70dd855f55ac20f49b8a6636e282181b482b. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QMFMG2369544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ae39f6b3c971d23b28dc151de145e29c56f557c60eab28f70db5afef6a5b5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QMFMG2369545.
Inte jag heller (feat. Loney dear) - Loney Dear Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e6b6fe811c5597809fc91251a21b7a4bf452157c8c52f13e9ece7b01bfb84. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/SEWBD1702013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaf9f92f4d830885698cbadfac75ef78619ff920e9c08a3ddf3c7e91486a135. 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/SEVJH1905706.
Who by Fire - Live Tribute to Leonard Cohen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d8dfd1ecdc327b18b9e11c7ffa6065562043b25bc6e3162864028b675ca05. 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/SEBGA2001069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc108d37d707404161742e31d379735a4ef88e30d51b12045101689b833f874a. 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/SEBGA2001081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac1cce5b76daccba0766cb0ee1ba76117d40910a954f610ecd5b35e7057597. 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/SELEI1400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac1cce5b76daccba0766cb0ee1ba76117d40910a954f610ecd5b35e7057597. 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/SELEI1400304.