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 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 0xf304c4ab9c38202023bf20a345cd2ad2963526a85cc4605ef4ffd891425f4c68. 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/e842af5a-0049-40d0-9b60-f02574cf85d5.json and https://artists.proofprofile.net/proofs/artist/e842af5a-0049-40d0-9b60-f02574cf85d5.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 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 0x83de43ebbcd1f7bc13092683d24f5d8d91bacbd688a7845bc1ca2507708c2bd1. 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/TCAHU2456062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fb671077461fd616e39875723acb9ccd501a7effba2728c346d53081d9c8ba. 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/TCAHU2456065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a130d228a67134832c0599d1c84d185ce6f9ab876366cca573d938ab283e46. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHU2456068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a30e37a324258775c0695a7a1648d3f294aaa20a4bef3cf60fc0f49954ed97. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHU2456073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40ec0ba3df65c80069f7f4b63548da8011d23a22ad9d7b5d8dd54221d7bdbe5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHU2456076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5bca53b65599ef772146b716eb5d0df8be6a2ea5999d550977f13ee769ba4b. 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/TCAHU2456089.
Healing Harmony and Thunder Distant for Gamma Pattern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4307e13817f1d306768a03aeca501f46aa1c1e1de1878a2520c23f1b952b312. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHU2455944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de4dde2ca352d4793d50ac2fc0a14c8eaa861067b614db382e234111eadfe7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHU2455723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8023d25354d8fad548cb84fe99ebc874f5ba01a6a46536d1ec5c3bd990b8a63. 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/TCAHU2455827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ec8602e518e567261c0a16dfcf8ebe0abd0f636d77233b9bc2dbda7aba14e. 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/TCAHU2455833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f0c0a593a3b94731e67b71fc5517107dd29db8c9316c4368c38f69fb2a8db8. 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/TCAHU2455838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940d5f51d68268cd68a55998d58865edd345c7e9e38817726cc899804337f02. 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/TCAHU2455845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2acd3ba566d81e3c06cd371dac64e377d9ac500d89e03c0587298d8a2112f. 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/TCAHU2455849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da18d4e1374faad65e20693bb2590dbd408cd05861a3768701da029391f864. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHK2305747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1305526df2aaf97d8d5792a121f1a31f69a61c21c97bc06b449f39c1458de1. 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/TCAHK2305750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbebd8a263dc7a367f78ca2a236ce156b4bf65d3b13da1a3abea870a3944c6f. 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/TCAHK2305752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c57ad9c567eae5326626a42cf356cfcd4f11415016863999cbfee52710f10b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHK2305755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043b32f4f81510768d4a3a0b4482e0cc46ed2410f98c61495d7bc97d417b5d0e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TCAHK2305760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412fd6733f172dc1840398b163410c3f06bcb5fd573d509924ad646ee8046661. 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/TCAHK2305764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d933bd25afa489c67d92890cf5b02acb1dbff84375a3a73d787651bb5b742ca. 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/TCAHK2305766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5bf0f523d4246b0b6e19a3ff709e6698ad2c4e9ae6819ee86057d4417ac62f. 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/TCAHK2305768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c65f29e4e589417cb71ec78c067ab1c29d8c9024c26e731fe11ef61619bdd67. 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/TCAHK2370879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e949c07c26a83cf7922af32427ac16cb7dee89375d5aba1242addb4c132994. 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/TCAHK2370882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61066c30315e35d838fdb65491c88dd55cf14b56ba48c02f11135331cd4e30a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHK2370888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1236ed534104961e9f3072628c6d9eebb6f7191ff27ff4b896a10093ee8f2dce. 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/TCAHK2370891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce1f6b1a686e48203172eb8e612b762a15352b475b774d3a6b6b910b6c8f7b5. 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/TCAHJ2375093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48ace0fdcb378ab967f71f98a44861d7ddca7461394db33079f4f184c4f919c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHJ2375104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b3cc76db709138f72aaba1e8c119fbd6e239b52e40d5bd4a7bcae1d6dc85a. 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/TCAHJ2375120.