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 0xa94cb82db2e060e7d9a3f7642b4993a837ef36d13e85443ed28be376e0b08d53. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2ff3eaf-f4c8-47ed-bd6c-146ada10c253.json and https://artists.proofprofile.net/proofs/artist/e2ff3eaf-f4c8-47ed-bd6c-146ada10c253.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 0x9aa22cdadfdbd36e5da6284d253e16699da0563202c734f97b1d0f2c9b937288. 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/PLV191700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19fb002e9876e65607d3ca6e68532ecc95df032647bc83f7199f92fc3b62be. 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/PLV191800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10befe863c95b14d26760639edd99505d6cbfe4c1226b9f91aac94284da58975. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLV191800003.
Another One Bites The Dust - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00c33a2261d4e460b348addd26ad9d83c767f16d13ecbbc2a7e96a2efeeab0b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLV191800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5609215d6cac79580cf581cba69a8e7735f63ea7473b2fe9799debbad885e263. 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/PLV191800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cbb37f1906efb15ffd91d597bf9cbbb63bd3e78d5399f5b358d60d0963a221. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PLV191800001.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7c74f6e6f9c121230bb0867b81e5fdf27839279056c368713c3099d1e1ad8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/PLV191800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b02432f1730fc2b49ba0889562ef0c9de5fc96ca14c082c0d02c4e2f8cacfc8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/PLV191800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d9daa350d8d46e640f903cad42eb08062940d200dbcf7a2a9ce37683f0e19. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/PLV191800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa8d7414ab886a6e65c7c53a2808b566ba520368e61e25fa531e31dd418d017. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLV191800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58032bf324ca87bc0cda8a6e4d457ba5e336f947a74c0df61bcf0d41e53292a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/PLV191800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac5b6d02795a54f0f95f25b4b8b784bc02f1babdc1337f7424d8b33d396e9d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLV191800010.
Człowiek człowiekowi wilkiem - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd67e86871bb0d3024e6bc562171e2b75170238ecfd65546bbce3f62e68fa0d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/PLV191800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd82178c85a9f94b7323fbe0f1f1b3c193a6f712ef32bc56e24191e3eed2390. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLV191800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3f048a718cffb6ad6cca4fd2e4c5039717d5e4d2151dd857d71028e4d1f1d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PLV191800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f240e1fb4ba025f7de749446514cdf4cac6c8674356b427fdd2f387261f71a0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/PLV191800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845900696e4b11d696aa5ef54a2629b2682d406725c5250029a44dfa809463a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLV191800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c1ee08a0b0f226eff2af5b65a21e0ff2050554c8a2edda768ab5bb31cd3a7c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/PLV191800017.