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 0x142a2b832ce661c61b120c1c369d7a67271a5c0f13bead9a006c26a218de5dc8. 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/faca64ab-54c3-422f-8ac1-4ff6ae745281.json and https://artists.proofprofile.net/proofs/artist/faca64ab-54c3-422f-8ac1-4ff6ae745281.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 0xdcf448224484935a99b08402886728bcb2fda6fca693fd2cfcc35c16753932dd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6TI2336173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c053397f1e181ab92d9ccc6417031359cdaf9fec5117f70d3b6a2ee9c4b38. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE62M2351183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6da22a530f977e5858a2ed293d00d0a46bd88f9300a47d9b8802f63d9396c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:20Z), 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/SE66N2325598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc86a01aa1ebc02f5c83aa310ece75e46f7c63226a92285a6d46989e00e43233. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SE66N2325516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3cf7182e7a0abf6cf25ba3dd6d6deae87ad9ce4be4e5def9bbb2218b633896. 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/SE6A92329925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6994d4e8cdd6bc17db89fa13af30496b3da61cc92dfa489eab7a3c1a693ec975. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE6A92391819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947bf4b52692e19c8465480b51903d1ddcd64dfe3c3466bfe82c789ce3834a5. 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/SE62M2314618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0c320775d775fd3a538d23ec6306f5cb53b98c5145cd19a6b4767428a7591b. 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/SE62M2369756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76183c302372a3206e9bdb0926c9e2b713b2c7d235751bd255563d90517932. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE66N2348839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a51fb9deeaef95e20624f2f192e348aad772ba8a5e2d427c46f1b6f4c2368f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6A92381675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ff874e181cec1d0a6e192f66108c96c20b3cfb66aba1f617863fad5db802c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:49Z), 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/SE6A92350759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafbfbea8f8d2ae93baf9aa95bb48ad9a56e31d6b12f57b642808347b48fa560. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6A92331805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb63da8695e9ff84a5069f134e79c0b6257fbe079e4bc13ed537f3db4c3862. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE6XY2385007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d77a84c541cf0fa8a859e260717446f339bba7dfe8c7e134b607272e39b5e. 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/SE66N2320765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e415d0eda20ea5e98d63e71a385094728911570b118c71cbec95d009e72a02. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:20:11Z), 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/QM6N22599214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95471fc3010f28814764743753c66143d7b1584f2247ad8ce4a9af614f7df727. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:39:59Z), 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/QM6N22599215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c88a3e2bd149c6b88874bc46dd759304c6e61f96147f5c6912423999dd8f274. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM6N22599218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d162f50bd070450efaa14c20cd1f9f1040120aaefb265064725c1d1255037. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:47:22Z), 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/QM6N22599221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe739230fade17617a12760dae098f271d2dc6186eb130f422ba695162bdd8519. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6N22599222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed45c8ad46bbac9c199d355073378a7b09c8926d18dcb414b80337fe3e6b23. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6N22599223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0cc398000bf19e0586eb3e79b4c3c6e55b81c6fc33ae26ada43f74b95f0a08. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6N22599224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3ca8558f229e71fa46bdb92efc768f52bb7de87b098f8a3e1e04a1b8088b82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:23:43Z), 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/QM6N22599225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46624b3c7314745fced4bbaeab2695d79e85c56d808a7ee4abc4f253eb356feb. 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/ES71G2130760.