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 0x3f4bcafb40e4fb18207246a64c9b89389883c330d59fe617d35af143c7a08fc4. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04aed0fb-70a3-4146-b922-58b371e4c46d.json and https://artists.proofprofile.net/proofs/artist/04aed0fb-70a3-4146-b922-58b371e4c46d.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 0xbdcebea674a7ab66e482b1a902c1e94c07322377784cca1c634cbb7f120a0186. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:11Z), 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/SGW502578309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407247164f09c92e6f6d2fcb512079c62d843092cecbcbe69af64c24d31319e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:48Z), 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/SGW502574789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f396d92d66b69f1bb601b161d1f080d59e1c70167c0d6f7a434afde458ad8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:22Z), 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/SGW502587744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59389eb30ef05cdad83500b417b3ca79d7412ba64f6f433826fc24ba1dab38c9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SGW502535503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e306b9eff951344cafc92858d53e1ab1f15a5070c6a4bd7200071d3e1d887f. 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/SGW502597278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1ac3c7fe02111432ae89224fa5345b898d938126356900d7688cc1a83e4e59. 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/SGW502593481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb518c0aed3b170bca8f427a4ec3ed589a1584f05f88ac79220a1d81074214cc9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGW502568830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a39d86fef875e938bb5d0da13269b29465430c7d7c4c3c519cfaa64704444c8. 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/SGW502523494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db2e443171d3a1ca88322321299d46df30bda2dfbb0b28e87b0c7e91ae4e5f5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:49Z), 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/SGW502514063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4456b16ae500f11cf504fcaa66e0c98f5046cf297d0799eed0b654d760f97c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SGW502587111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80f5124390ac46a1d5f8f9225ade2aea49e310393ed618fcb9276d7dc525dc. 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/SGW502542906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec593ca2e14d9799e309899633a7b31e37be6a288273740f853a3aaffa1bb2f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:04Z), 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/SGW502597898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd1b767852d59a82a5455d55132cb69fbf767ef67859a00e2e8bd3ed966423e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:26:00Z), 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/SGW502544312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a760fc52df392c856e94b9482d006471923f03c1d37b71413f765e4042ee9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502557331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb399567edf8d32fb016c9190a1ded294afafb5e2e729f8488fe8d4758a0b796. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGW502533988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc4fd7a93e702779f44e69f0327c17f71ddfae9d1ab1d6a29617433c338525. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SGW502589953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4187a6dc0a8370aa05d5b0718eb6e6774078c237801b37c1987ecc2f1c20e7e6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/SGW502515220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fdbbd088e24234c9c694b791e74406363a48b78c4a92b58cf06d363f9bdc04. 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/QT5M32549593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a79678ed31ff2c3ea39316c143ae99bbf5f008cde235c31e5f28eeac91585. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT5M52513593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4bf8d7bd22ffca4bd5ef23e0906b0f62036f124cf13456e90574bb43e68ee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:54Z), 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/QT5M52515657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d1fabbf7c216a4944db3cb7061f4f003dc451616a91f18b30f6736fb46196c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT5M52541439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06cbaa5ddf4ff2a650fa02e9154bd4a21cc17b31c3dfc09aed6edbe49d501e7. 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/QT5M52590488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1646a28ccdf588bf38d8b22ca81c4355561cfa421fbef5c6f46fed9b42292d9. 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/QT5M52511674.