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 0x55564b83fd2a153759c0e4d37976a254b5de1ec73324c964e9010052de97818a. 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/abad0b88-e6cd-4608-b0c2-d940d84cd08d.json and https://artists.proofprofile.net/proofs/artist/abad0b88-e6cd-4608-b0c2-d940d84cd08d.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 0xcd0936f6e28dbc47bbd164dd875c61d3fe2c08ca9a732a034f5d3f1277c1f03a. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZHNA1966573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770f3adda3daae21100a7f64f1c3ea2c1e5efff411f41536818ebc69e3daefc. 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/QZHNC1936881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97061bed5872fe6a0d83b2bafa50c50e12df308b32a9e39adca8055978bd176. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6N1900451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85121a5dc2bdf88489054b1fc50727121d999f3bdcbac8e277c6653219e1072. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN82045222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466cd4a6e941bc5f53a068503eb9dbc8cdb93c47ca1c6dae126df34bb61b5e56. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMEP2047543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5db4ff85a3c65ced934ebe81a647dafa7b1f91db144c8b8ce83051ab3c85a3. 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/QZMEQ2059403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6c96ba79d84bd04ab67f368e274ed29755ff21cd09260b2d8eaf462dbd4dd8. 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/QZNWR2092307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5db4ff85a3c65ced934ebe81a647dafa7b1f91db144c8b8ce83051ab3c85a3. 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/QZMEQ2059403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85121a5dc2bdf88489054b1fc50727121d999f3bdcbac8e277c6653219e1072. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:17Z), 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/QZHN82045222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaee1580708fc2cd178596b0450063495f5e4f673bc7ed0d766cb4c0d93a344. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLR2018497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f77cc0317a1026d7dba6a50ae8ae71b12930959beef17b8e273931287304f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN32177058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2719052d543f7a70a0dcc5d102a97687a382a33c99a37990591fc036516a73. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZHNA2197557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48d698b5d7db88a3a661b5fb0e8641340fd8a9b6a6b020d2091fa8541ee75b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZK6F2100883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cc5e30eed60f9b177fe92e47cf6c307dfa51ee66e48b6fe98afb79098e5ca2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNWX2193010.
Written Down in The Stars - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0ba25f9e02f8c2b41d76f3785fe61a19ad4ae9fe32b539a3b1c1d316b65a3. 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/QZDA72284423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f39b5d42811b6ac99e845cc2705c19239ae779715a4f61c092f9b7e73603e95. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHN72485212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4d24581be3109a45325f0c624d75f329ccf90582c91d00d9b2697c877818a0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6K2596101.