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 0xe0ae07aed16d0bda46a03eb84e70cdc7808a98803b08d3d1979ee777f551eff0. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2f64173-e843-4dab-93d7-57c85154863d.json and https://artists.proofprofile.net/proofs/artist/a2f64173-e843-4dab-93d7-57c85154863d.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 0x743696de4d61960af558cee35f31fe5c1ecda369d0748ec62143542c4fa16e69. 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/USLD91728050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3beaa61c336d1b488bbaef94f3db277f0dec18ec48c81387f21132a563ee8f. 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/USLD91728052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44499ec6e67feee5c349dbd4a662d53f7f5c05f09a6dc080c3e58dcdb275d01b. 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/USLD91728061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9af1baab19e948ab3cf072cf7345d556ee8b6c87f1ea08ee374c8beb65c9dae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91728065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ac82c2b2d2d838b95d3b0aec773d145c8952a19f132f0c332f9ebbc6da908d. 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/TCAEZ2008485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc963821e38fc8ce1ef8f28e476127057e3d588378d80f7d6ea983d8d716b476c. 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/TCAEZ2008489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58bda21fe4fba46977a777c03758b658a4f9ab6e624da7a04cbb9a545d96083. 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/TCAEZ2008493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd197d8d18aeb3f3cf3a9ed9c712f24fde6ff9ab7ca6d9d03a30b150ad73d02c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAEZ2008494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490b38a8f5c34a4564b25d616a27986af09d63970fdb4face1c22d740b6326f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEZ2008496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd10cbeeecd178413186bcb051dc0b9ea03bf0dbc727f3d1d836a8af852ed53. 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/TCAEZ2008498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7929f7c148e2e5080ab5a6a57a9d3188e899c3c89af176ec23ae6317306ebe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAEZ2008499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4d4211f8daac34f3dc4e2e3c83cdb910349a05fa41d5529488bc4c6a927b7e. 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/TCAEZ2008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a603977502116e64fb2856eb5ed885ac66288ea820a82b27a535eb43d2d53. 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/TCAEZ2008504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55452f9a0fea0f3ba478e15c45fe65991f5ab301e5a4963900532b30dc206b7b. 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/TCAEZ2008512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60df23a7ac2f83e5939f09af458c2ea7f8a27ae7957f99bfe3342a949ebc88. 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/TCAEZ2008515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a35328e28ed9a6ecb612f7bcf991e5452e86dabec6d31ff89b72e90b255e724. 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/TCAEZ2008516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32af1a3fa6b447eb19c116b9a9536adf19cd3b4ec111d4ff22413e0ace444ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEZ2008518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfb645bed98aeb4aa03e62db152549e2cad8f542da0aa0f252f2542d64062e2. 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/QZK9U1900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65c109225dc3550efdb4491196730fdddc04d4f9de3424e5b096e8728d40c30. 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/QZHN72251767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1da5f4f66afb4bce6620e763739359b34ab35a7d943e62eaf479b8e2d92ab. 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/QZHN72251768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc6639f033c610f6b49c9f5d5ab2ef0f063b1b9ddc344659e90db1752cba2f. 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/QZHN72251769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4500ff925677a0af795647f5fa22d28a9aa0902d4e34e1ac38aef9eee7bcb5. 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/QZHN72251770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542ccf76a5bbca1b2e823908e6319cfaaab2176f7aa34312e7bf28002cd2a398. 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/QZHN72251771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f1a21c48f4fb6672fd8257f1253b0ff923f1c483843e0cffb5d6dd9b5c16bf. 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/QZHN72251772.
The Painting I Made When I Am Still in Love with You: A Memoir from Somewhere Far Away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39a7e246272329cbdcbf2bbbb0bbe50647f9abd05fa05cb492f42cca0883235. 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/USDHM2405233.