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 0x7d473f74056c027bc8ad8b98329d6868019c12cce31b68c0d03b4ee5e274847f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee0c4afc-1eca-4e42-85c7-c18c00a7ce4c.json and https://artists.proofprofile.net/proofs/artist/ee0c4afc-1eca-4e42-85c7-c18c00a7ce4c.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 0xe51b373cc8a775fdc01707ab5ae681616f822e26945dc28fa3741865b11fff6b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUB421900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d949867414699366319bf33d52e356f78cae567578d394242b3bba90123209. 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/FRS182063683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecdf5a716b6f0354d0e0c842fb8bac86176d91badc5485d810fb1e6692ef92a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:20:52Z), 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/RUA1D2118924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa070b8446e85ba3025ca74adb453621c4af71af30cb7b706ec2a5c4d95a8fa24. 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/RUA1D2118925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357eb87b99c31e0c80051096c5be65721e5e5336968f61911d1eb7390fb80cdf. 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/RUA1D2118926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48202dbedb37813d907a0b4133bb6093a3fc652332521d63b4f6163fc09705a. 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/RUA1D2261857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8252cde6e2bf494117b9b084a8867336f1d56d1b3fd27f13fcfe7ccf54431113. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:33Z), 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/RUA1D2261861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48202dbedb37813d907a0b4133bb6093a3fc652332521d63b4f6163fc09705a. 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/RUA1D2261857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8252cde6e2bf494117b9b084a8867336f1d56d1b3fd27f13fcfe7ccf54431113. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:12:58Z), 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/RUA1D2261861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f1bbc071d9d05d4240e56f07e481fb7bce93d1e01ff4a352c51ceba3900184. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:23Z), 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/RUA1D2261863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd25234c81585e34aa2ffa245b056ea7e1fadc93726b246376ae2b057db88788. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:34Z), 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/RUA1D2261865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5796cb4d7a4f617397bd6855deeea269583043d5625670ced4eeb224b5df2110. 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/RUA1D2261867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323af816aa00642dac0af9f7c61c3314af4feea636f3976f6d5f3a3a0b9e022. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:39Z), 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/RUA1D2363503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e08f9ca44d6dea073e6ad62dc8b4c07ef04a5bf61d37fe835d191eeeb487c10. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2389523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57984c37e3e6df75500c0bffbba189f6a18889151ae40ba6e92b35a46189fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1D2396920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78ebdddebe6bcaa825f657e6d5224f197e754669af20ccdfee2f9e0a551c66d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:58:49Z), 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/RUAGT2322893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4f907295f2f4e570e6cce14ce6350f452d811f2c6b6caad732a14dc7a25dcf. 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/RUAGT2322896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a380a61726d3478b7ac2d38bb3800e8594462de1a3ee2acfbcd01c961501fbe. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUAGT2322898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d66f158455f4fd10ab731da74040d9cfa006daf0ee43927dea159d70006f18. 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/RUA1D2475345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58771dfa2ad7aca3f245271ded02800dc3a2ed05d2a44c01ac7319fc5fab64. 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/RUAGT2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93adafd8c2a1be14dd7187cfdb94f525d6e6095da73eaf5eca75ecbfaf08b9b9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGT2448362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb106b81a13fd9110c06b36b5fff22205fce419827ee37b6e00a97481b41cbbf4. 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/RUAGT2448364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e1ce113f4da2e8ba25d51bdb145d4c579c7852bc3d88735746a65ba8dbdd2. 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/RUA1D2452072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc3b07dff8b2b92ce30fd0ba95513147e058cea1a2b4b35c3ed7e2b8aff52d9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGT2448367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad41194bfb1e096503bc4822e6d94af48dd8f629b8b01651f86d2e0e2acfc8af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2448369.