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 0xcedbe4c0f0cccfb85c588aae044ad4cdcbad5724afe4f6fd820f24a3a7b7ef86. 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/cf25031e-8c9e-4637-9f4c-0f475b7478e2.json and https://artists.proofprofile.net/proofs/artist/cf25031e-8c9e-4637-9f4c-0f475b7478e2.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 0x9e9f66d0d45c6dadd1605c8d1cadd49a09060e4ab0f731320156698606be8fb1. 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/DEZC62355062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f89dd460a90edb9abc9423be2c60a80b59721732ae5f70221bae406691251. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DEZC62355063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c304da4bd4f0573435d84728c3a99061f4e21d0ee31e1cad7eeb4a0f5cccde. 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/DEZC62355064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da235234c04422c9c700880420058b21eac0d124226004c5e758054de79854c. 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/DEZC62355065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70b8cda6c662ef02fb60388218d659c4c5008d072a1ff4ae63be805fb55d61a. 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/DEZC62355066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f0892ef01e6291513ead46b4300ce694b470bf0c076efd77bcd9892afdd0c. 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/DEZC62355067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46d482c2bc9afdcd57522515f52e9d319bb6e7609098e9f77a348f34e1ace2e. 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/DEZC62355068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07d17ac68958a3e054bf5aed8aa0c5abd40f794f1fd56aa978ae15f223718e0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DEZC62365925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58594d58c28f934ffe11bbd506c6b47dbccc81d5347dd9292ee725e76d656c5f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEZC62360217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9503d471aeb1b19f8a001ac5071e66a5fd03a672d9b6a512a155feb32bb25faf. 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/DEZC62363048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58440edf0addbd3ca1a744ed74bfdb80d8ebd2cb0a5838185db335d3df26b5. 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/DEZC62367042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa367988726b1d69498582777dca43b8cbfe2b66e13b805244d53c79a1a077bf0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEZC62370450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0320787a780b3ab4e1fd759077ecf1d89b86f31caaea6f6750b91bd6bb3d5905. 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/DEZC62372915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c284a99e49117480c05f10296ff0de1500b8183802fad9d9e7562b000558b. 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/DEZC62376226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f8e9166519c3cd090310ba5b474643442db0c351190a1997d0154b3126ee08. 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/DEZC62381313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd504a71e5417fc8f7b96d1578782897b74963645e1dc464fceac402788a2b163. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:27Z), 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/DEZC62389314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483cd332fc78a2b34af1b79c1c0f9024ea36e24986a401d5d1ed2e5d35b6c9b. 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/DEZC62493486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe540fa37741157e5cd09ac8353cd0af9a701ba5da6f57b75db14acbd8b048511. 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/DEZC62496871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee455ec372e583d90e3eea6311fb1d41749996d5cc6ff5f1a415b08bc9f03b1f. 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/DEZC62408882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47ea1e44e0b76dc5ddc65c037f08c1e7c3f32e0fc1b8d486901228578656d67. 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/DEZC62418594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ddbb1dfb639826bc4fbdd74ec077b39a41e9e8685149a8980c84128c5794d4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZC62453094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbbc2849dc118123cc393397a0752291e478ce681703094ddac897ade41f811. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:49Z), 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/DEZC62455791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609973e16ab7e1e78166d09be755058d801a4aab84a15c8109285271b4eab888. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/DEZC62596034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343e0e402f51c71a49305c7da75fdc85e510e620a4ee884fb162353035e4486. 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/DEZC62596035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084af8502b8c70f06482eceeb1788c6be35468d2a53a68dd5657b0a291fd2819. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:26Z), 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/DEZC62596036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f7bb4da0d4e535e1d65bbae97125113346056bfff8594987552b6fe4125b7d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62596037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c84c883c9805ee5cb4295259d4593cdb978116f0c3555de31329ab3193e715e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:42:56Z), 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/DEZC62596038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9235bc17aad025b6c44d4d1ee801982f0dc6e88d4813bd5696321118183b8d9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:40Z), 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/DEZC62596039.