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 0x0a7e6111bdc270a2e28ef471e3305b245f5b0509ff4595ef76d917612ecd1370. 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/fdd5dd7d-1459-47ab-87c1-502f5c7d4734.json and https://artists.proofprofile.net/proofs/artist/fdd5dd7d-1459-47ab-87c1-502f5c7d4734.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 0x02cfd4ea5a337524692bdb69960606b9488918035c2c825d5416d3eb9def34c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX8LD2214609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95252bbda74aed07209db6654fb44a722f309100a5fc5e44414a13f5c56101d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GX8LD2219612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6270ac4ec374debffc66d783a169fbeac7a1301b7eea0b809a8ff63f05c87fd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX8LD2292211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ac7335c52889b166b999e12d1860b2dcba86c9546bc52d432978c194bf8c21. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GX89G2303879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbea596dd4584f1e4de29077fbcc0c850e1d1de32ab176f61f1794793eb9f3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX89G2376474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaca996f66c560e100de1be806f3071adb3e37fd3e0323896f817a8c6b595ea2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GX3HH2300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81250f2cd81d6b9ba2e500f13e701fc98cb4a73aedbfd03a3bdce3a601dd34e7. 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/GX3HH2362980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c79dcbd27c3cd42a6b92fa785387ade481fb76660b22e6f73a942c4032a8bc6. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GX3HH2365630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99803e9f69f56e5fb9cd2957cdcbe41509168713afdfeba59cff9f8e19e0e30d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GX3HH2376493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d36188665fd4f14eb3a908743d5d88e5ab4301b08588be1ff5caf065cdd164. 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/GX3HH2319829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faf6f4d12c46ca069fdb2332ad0a8ccaf73289c077a5cf006883bb04c6caf0f. 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/GX3HH2322081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf4695f51c9cb451f128b974a976277e109684414aa9984b1a394639a2d0894. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX3HH2300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965ea42c7aab03e285a0993fb28c47efe4b0b4d9d23500d0fc7160b6fc0b13ea. 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/GX3HH2306719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd556cbeeaea77f15c06370c1357d62ffeea8bb505c2ab366e80356019639bc. 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/GX4R52382418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde66c11254c337af43f6f7af239f13a6495eba16cb76fa7700c004a3cf935612. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX4R52328711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185934841e4d62b28501dcc6e04b973f972ee304735b1d345b48c58c694f6240. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:11Z), 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/GX4R52396693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0296673df065aefe4b604c51ca33e55bc64917df1e0b410099260ddf354d63e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:28:04Z), 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/GX4R52320994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1805063aa6e0807fc648ffc70b92f67cb2f788a898a00975535a7878960f8ac. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GX4R52312236.