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 0xd8bac2223d163477df32516fc119be8f265234bc259fbce86ed7c026f9154950. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4497ddb6-a96b-4dd8-afb5-5e4a4585a932.json and https://artists.proofprofile.net/proofs/artist/4497ddb6-a96b-4dd8-afb5-5e4a4585a932.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 0x54397dd999e5a3e9300e4863ccc4699de2addb660bc1dd219c2e10b360c1499a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWC010201610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c5bc89110a5dc00c7bd64d56983300397a103eaebd78b0b458f0a38e06b2c. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TWC010201630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b5b923124f3910c8a35d51ce4cacb613a162486ef1c857c3230bb1a907a0e. 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/TWC010201640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1926bdf42df9341241737737e08a590bd10fc247852abefd2cc07e6789148a28. 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/TWC010201650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bfc1ba38113cc3a4249b3b0ef24210b4b66131cae3481e84774efbc8ad33e9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWC010201660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f218104590beb1abecedc2e0ef8b92362de28dce11e83a8edfc78d3ce909f02. 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/TWC010201670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7ad1ccb53668ceba0b75e6bc08703f225857474744d0b1392b621920846d3e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TWC010201690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecbdc115eecb33c36fa2c4c61dd66cacfa489262e3c10dc351d7e135f67afe7. 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/TWC010401121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9b38ef3338a400d523b2f0b91fb0c8c0dd08075371bbc564f84707de41b7db. 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/TWC010401131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd2fa0e631c105faa9bdc0b420a1d7921689656181fdbfee676995aa725587d. 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/TWC010401151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a34526c41e53ce280f54e488fba603cb146245b17c8a2027195b934e8fa0f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TWC010401171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c415286406a29b5a46502a2c6e1a4154220ea640f7d515b22aafbccdcf2894. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWC010401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c57a85cb854c93561e64aa76b0467e748a2b40e97d8cfda8c4a1f489113ac. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:20:47Z), 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/TWC010901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463af1ea97b8c26e114623974bbd2073d5dd6122306c740f7c01a3ec854e88. 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/TWC010901621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b73f7aadf3a3ab617f2462116dae3debc8839dba7c4fa05ac381f97a722adfe. 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/TWC010501611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66197b33c8e403aa76a17b4cff0da3a45254613b1a87497495a3ac2521b1fefe. 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/TWC010401161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe5fa623daf354c038f88fa693498d3aad17a67ad8c1f6348fe864d5cf35620. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWC010401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9b38ef3338a400d523b2f0b91fb0c8c0dd08075371bbc564f84707de41b7db. 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/TWC010401131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463af1ea97b8c26e114623974bbd2073d5dd6122306c740f7c01a3ec854e88. 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/TWC010901621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707cd079c1a57c47227cc4f8e0bd3d4b3b7799d85e092aa72316ebc3e30b83b6. 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/TWC010401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b463af1ea97b8c26e114623974bbd2073d5dd6122306c740f7c01a3ec854e88. 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/TWC010901621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf555e7f1250dacea1d870dd686394c737dffb6a514554183c86d5053417a49. 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/TWC010001380.
Afternoon Coffee Break with Soothing Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0ec45edf3a899a34675e2109fa312a4651ae4a639904bcddfc6dd3d5f27ca. 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/TWC010401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66197b33c8e403aa76a17b4cff0da3a45254613b1a87497495a3ac2521b1fefe. 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/TWC010401161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f86b6d0ce496bc48fa836e68f721acdcc8fdbbe141a107f2da371db3617552. 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/TWC010501531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578b5b923124f3910c8a35d51ce4cacb613a162486ef1c857c3230bb1a907a0e. 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/TWC010201640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d3118dda8eeea6265912b3da7750c28f6abf9abe0422d89082c9d275acda88. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TWC010401111.