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 0x36562a9d13b015aec67f7f54a224855a2672bd2ccb47f2281a7d3dc2b70bb1e5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ac869ce-b2c8-4ffe-9ed5-1ed5737ecda6.json and https://artists.proofprofile.net/proofs/artist/9ac869ce-b2c8-4ffe-9ed5-1ed5737ecda6.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 0x4549731a63b827be89b4d81689d49d8197f62f43c3d49a51ce9fff1d09bc0f88. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:58:07Z), 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/FRQ022101286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a49aedc6bbb824e133d0f19d18c83906686b30186187340fc9b919c38ed116. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:54:53Z), 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/TCAFU2118574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2726f25bc3247e9a649372d80864dd7e608d705ef4c2bdd230080d7edabf0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH6542203557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a7aafb6e4a8d8ba7e3f7cbdd3de4baaf196c8b970d520c2dce1a500d116bb3. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAGW2336876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2308e59bb3b469c6221e7a40911661e01661031b27257e6363675e40f0dd6ed. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAHP2322614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e35f5acdf3dd739f2c8f8ea60033dab4729c13f367a04c254a42f626730afa. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:37Z), 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/TCAHP2322629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb5f9ae7edf74aa2ede77ac3a21bdef2a8675fdb9262f15c8ecdd0b5303a0de. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAHP2322709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b35fad08f82760f46b258887e0908a43167ed752a02a97539747da8d7f8f98d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/TCAHR2330040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38120db34085509e367f54aba920e31e5ea0df3602a406de7be572f6606eb9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:50Z), 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/TCAHW2435545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552cdd55c8fe5e04ae32b15c825973f6db44ccad3435d07209c4bb10bfad4286. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAIQ2488542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41fb9786dd492c4a1e614ab9f1747ca6f4b861132ffd6a3e9bc0e82dfb0acc3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:02Z), 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/TCAIR2460162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebafa84cb657b0c9acf90b5bd27214ef861d8acc073458ebb3ae2e17c65eaf2. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/TCAIR2460175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b5e5f31565debc2d8effd4e8babe5e618469edac7ed28e92a2728fbe4f20d. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:49Z), 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/TCAIR2460246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc531dfb9a27279788474f0699d2eba8a554555be0f94c5829e27f98cf6ddb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIS2460271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9153fe971ea2b0b4160b2bb3b8fda1d3f3c5de254b8880c17aa9cdcc74237869. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:55Z), 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/TCAIR2467341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e01eaf395b7c58f6a90b728eb15c4ed5b62401036a078c8ec4db8b7f6719b51. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIW2495633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01365469f4b7fd34c09f55dcbf00e24bb2afd189694375a17a2977e51935b5f. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/TCAIZ2415434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127e0bb90c0f0c12242dcc3ef8d9b70c7b974cbc8869e00a2ef8e296dfb78422. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:39Z), 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/TCAJA2454510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6066243e364f0a2087ce5065084b42e8ef9729ac59519249d71af77b9a80cf. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/TCAJA2454596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c1107f3f47282f6be922101d47708781a3bc227475d22ea7f1a7a249403cba. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJA2454798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1c994eb31d21a9b5539c44ee2039dd1155e6c4de5c4aed873a5bb99310fb27. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAJA2454860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4292633100903aa26737a3594545432c01228c27cc65d59cdf8acb8a79d4c18. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:01Z), 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/TCAJN2505329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3ccd1b1d2616a85d705fa492689a0f2c891b2dfa2cdedcbd0a726ff45d6db5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:31Z), 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/TCAJN2505391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169ee978f0b501e4c3b4b59a713b29f8e4b7bb79632356f0f5432d6f9a440976. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJN2505416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfbb32387f815f649c10a2a4dcd5239a7a038102c557cf4c61fd0f9dc1d92e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAJO2505446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e760d36ed7ea21e740c71b62a79ee9ef8c20df0f37cb7c770f2e3bbf4d9dd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT6622562999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c324ba8f8f374db0593fab6f6e4947cc1056f9cb1060d6a5b217b83394b43c8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:44Z), 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/QT6622563000.