1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6df329c13a5220535c1ae1fab9bcc61b69a5f90a0933e93ce4ef029639e9d767. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afcedef6-d5ee-473e-9da7-5ea2c8d062f5.json and https://artists.proofprofile.net/proofs/artist/afcedef6-d5ee-473e-9da7-5ea2c8d062f5.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 → block OTSBitcoinBlock must exist at that height 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 0x84efb397bc718d595bfbb510a64f7b7ecdeec2b9685ce6bddb606ede31234449. 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/GBRKQ2367958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36290bf08a1ed86c8272e20bb188771da3a7a5907f4c41759c184ceb366d45. 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/AUMEV2483550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc78dc6cc54c3c996127fd3d06454822e2e2ef73d50736ef2bb8dc6eff804c1. 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/QZTBF2519290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec21d2dd56485ad6ab14adaa66bdca823fa1ac6108a4d42891cdde5ba706028. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTBE2573692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cfc85b236e22dd2db1bcd32d8a1b1960b34485533b4097d42cea622538906b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:05:33Z), 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/QZTBF2513068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f399a173905153d7f4885380cd27d46decbab26c302b230bdfb422c42ca52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTBF2553078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56431dec49a5208c2f181d66b5f0fb7f28baf5e3c9adf98b96e77c544f2a42ef. 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/QZZ772590081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8f6cf9ca0b3e5db757bf3c4d4d78fe63969d8261292efcb5778d971c1ece92. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ782545502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eba970fdc142f387c897a3c17927d02df96903da5a2a672230d5a5c6bbf9619. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZZ782523886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa927ddf00d89e2da99208126cabb58f862e1bceaa937ce4193f2f3dc8472b516. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ782583317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc62d353f14ec42938583fa23dbf60091caea1c74142ea9dc02555c39fa2ae8b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ792562839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66954a658405c748710461599f376e088c58516e46b32bfdbcaa0fccce3fa6cf. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:04:47Z), 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/QZZ7K2515413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed9882a4c3b0dd1d70c097de53c014d23434e62ad355d4910b6237f296b764. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7K2535892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a8b27b5cc80295a0a595c958598b3558960abccc67d80a2aafc1643ed269b1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:43Z), 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/QZZ7K2578255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c294f808ade2beb20417f108f90fd18c360d5d80cffec381917ae981fd18c62. 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/QZZ7K2566882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca80c427db4833a321c6c012dbbe5e9f245bf5edbe9c7ce180d9789652c2a7ea. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:25Z), 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/QZZ7K2589466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa053c9b1354d4c4096a4a6456ad37a760f2c6e4103335cba9bf78e63f8b515b0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZZ7L2514780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e8b9134478035a37f540ddd4cef43b82313dbf87ca1037a787ad2bd1692609. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:34Z), 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/QZZ7L2563968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275771d5388159c78687d0c0fed5ba9504e138f457b6d174f242255ecae10638. 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/QZZ7L2547780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c265f2703c62c19bccee8ef7a266764da662bf4cb3f3be40226ea518da7a5ea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7M2500947.