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 0x6feb074a5e7109401f15e8d1fc252ab8dfd870058781696f181906da909915df. 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/e6dd49a5-e334-4a0e-bf1b-25c8f12c0ef8.json and https://artists.proofprofile.net/proofs/artist/e6dd49a5-e334-4a0e-bf1b-25c8f12c0ef8.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 0x3630a65759e4c38a6f3b240e2aeb6439ab299f1f49d3357c027d018d5601491c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKACT1843877.
Shaky Memories (Cosmic Tone & Static Movement Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6945e66667f0c7799e7bf6a63f46fd90a86e97131d2443c47e0486f97514f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBKQU1867047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78584506a9ad2959e204197f35a490ef78dab96b672ee580dd13246bf0e64f. 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/UKACT1940255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262677f4998b3f57859e40ad880b6ea26a5791f645b8abc320e68bf5a02b636d. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:26:38Z), 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/UKACT1940792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d3778bef475f570cdb28eabd2a92fcebb8ad968818683f7fd85e8c76703ad. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKR6V2031767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9aa0e63f7b24c14eba1274f3dff376193f1331439ce17bb6cac0869d7baad5. 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/UKR6V2011482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5b2291ce1b05f15870ed007f0dffaad3db583a219a4c81dc431d426d093bd. 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/UKR6V2011483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858b12ae42da11da012368860d96ee93e5751fe38ff24420bfeda7d41029e049. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKR6V2011484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce4bc7e2ba6749178bdf264e363f11bf1507fdbf88de08155aaa83526b4eac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKR6V2011487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1738f541da6c764befef2f6eac9771c9e4907e6728707d32112d6b92bdb6dc1. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:22:19Z), 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/UKR6V2011490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f1fccbd47f3a388ad1411126d288fb9f47f1c170fb5e3877a9c453314e8579. 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/UKR6V2182756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e71bd51db30fd27e2119d5a78c614954d59cd76d5eac00c1255fe635c14ed4. 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/UKR6V2220067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe366fafe585beb4e04abae75039438521c5021a034bd75a94606e82ba652b8e0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKR6V2320984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6561950f53bcd6baae37e987486c4b55bc7c46365c122fbc9b14534d6cba58ca. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/UKR6V2321467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3179ab9a5375dfa31aeff38a95935dd7378ee75d3d66bf353a0e103d9e4e7681. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/UKR6V2321880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d76ca416d9f03f74020e4c0641c1d5bfd034975915607719712748ab95b227. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKR6V2422000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7a64140089bb54a6a5cc0dcd488ceb4923cdb70b3264b39719e896b62aac1f. 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/UKACT1843849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8948c4ef4d3afd9763d92fb014d360aa14be30c51a034659b735f55d7435f2a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBYB1602662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3aed304b4fdf94be60cb5430ffb027533c9531b7ca5b3bd4e18b4933b3c594. 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/USQY50968890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1664eaf314d8512a377d7bff3519a1a99be0d7c8fb4dccb198e8f3ef431136af. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/UKACT1941703.
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