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 0x167aeff60d53c307c0caa987bca619e12584ca01962767f4ed8bee1e70b78470. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9c06dbe-44d5-4a09-a158-78ccdfae25d5.json and https://artists.proofprofile.net/proofs/artist/a9c06dbe-44d5-4a09-a158-78ccdfae25d5.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 0x33787e7c2a4ba685fbcbae43888a2fd56332a4a69e9e7213d34b5e893f377248. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US4AJ0651602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d2829079a3b93aca38012e1e2e09be1ba0833e929d212410c8f8c504892a07. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US4AJ0651606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190a0c524e3798cd073ccfadd23a2fad152057d50804b13b94149a8b78d1dece. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:53Z), 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/US4AJ0651607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452e4dd45a7a22d228add7dc53ab7e1384b250e99e3bc15c721fff4cee87fb93. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USJ5G0831402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f0c811d9bf5f2e3e23273ff1b3553de0792fd91ea4f6e8cb88335feb3d9a6a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ5G0831408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf4c82b892345ce419c613e7d87b25fbd8a64f6019a894ea1af72cf5b38ac5. 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/USJ5G1134703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59c3adcc6b7292f06a0075e10915bfb8780a10bc585c46c8f33bd65ae66510. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJ5G1134704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171aed55dfafdc1d74563bc7f5353577c823c623957d84396b412bf49bca12c. 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/USJ5G1134706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340764661b59fe59cd71de5af4cae7023f1549671e1057710cdbd767c4f6b7b9. 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/USJ5G1134710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0bc5e5caaa9142e5bd4e46a4dd89d58e5aa6f61a9584410cebeb21b72a0fee. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QMBGQ1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc348c23cb15c4af9baaef050c80edc2aec08ade2aa87f697b6feb38ef06d6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:08:54Z), 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/QMBGQ1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae40db1e929d84514f7e210379e1c6532721d3dd4b5622453e298ad482c6bd6c. 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/QMBGQ1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999bd986852e1e9c41fe0ef989af03019760ef88f26881599f22fe05eee26cc0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:25Z), 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/QM6P41578902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde4fccb62e2059d678128eb56f590262f1fbe059b7221cc30d7e68ca9266d9. 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/QZ5AB1922323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0448eb12fcc6b138ff28483993f4d990ad1f56c61eb18ae0910d2e23a8fb0096. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZ5AB1922326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf276e6658f0d513888729c4d316393944db1ebd80201cf48de794558787bd7. 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/QZ5AB1922331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af657fe80e2762cabe6d17bc4407d9bf302ecd3f43f8c502b24095ae954c623. 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/QZ5AB1922337.