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 0xa396810045e59ff02df2e44f77f8284abc1383f4c95b413047fd362ed9d9fde8. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4973839e-bbeb-46c6-a1bf-f2f7ffb3f68e.json and https://artists.proofprofile.net/proofs/artist/4973839e-bbeb-46c6-a1bf-f2f7ffb3f68e.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 0x54a7620d0b9f952a4c2437348511e0de952c1521ff86779900220fbcad02044a. 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/JPW462437192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3aa42fbeb953967f288b82824715e900482d8128de255617a1a359e706bceb. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPW462437193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad144eb490c58a92b69c64c5ba38606d3efc9cda5476eecdd0e9c36b8a99defd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:47:24Z), 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/JPW462437194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0fb15b1e790aad532557c049632632c6bcdf759d97419c6a00ba17b0eace6. 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/JPW462437195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93ef07bb99f741caa429838527a181c0dc63a43b5d76d7c1967d9d1aa0711ff. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:26Z), 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/JPW462437196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8fd42c465b62f31b9230139c389aa5586cedb82b60ba7d1b945de2d7ccaf53. 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/JPW462437197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f32bee54ea398379b06daefaba66b8b9412f0822ca04feebf79a2b877054387. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462439876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0bd4305a881ae89ccc3c41e9ce564671b95aaf43dc61ca8699829eb367c38. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/JPW462439877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca171b645dd86998cc25a12aabbce208f3d0cfb0723f95395a86602f01b5c9c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:45Z), 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/JPW462439878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c6b58b1165eb32c872d2676027c2f14df3efa0edb7cd8a7bf1d5cb60610389. 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/JPW462439879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf1ace103682523079954285715bdab29c8c53db338f8d90ee18aeaa4ca66f5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPW462439880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a84059210e469943f21e789356097620daa2d594ea01607db8704676388dbfe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462444184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6991825dc30b2bc478615b72eecd0a4a9f96507c9bf451a95d98f7b943117b8c. 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/JPW462444185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa70ae5dd2487fe23749156b376d46a5e254f2f1495bb0ef58fda9bd439faebd. 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/JPW462444186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2355a30d0ca20eec979dff3dea32c7453d971150ae5046d60d1bed85d6da3da3. 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/JPW462444187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9806b21cfe30cb32755d950ad68403cdc482c78af8008f139816ef0ef72419e7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462444188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351feb1e54bfdfab1ef540e63a8761a918866c46afa522daaf6ac94f8d5bae2. 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/JPW462444032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf7e89381d244ed33993dd49a72d2f1bc5d365e86f0e3c5a695a79ef6ad599. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPW462444033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3410c66330a9854530354e25c76510643d3de8d630a833df0071ceaca6f61a4a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462444034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152b2028137b6f9860c0d97e38f1a949cdca689a2e031753ad4a2e05cac18534. 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/JPW462444035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fe96c016dd6f226bb9c762b4e223f3a853ac70b41337af6125c0bf8d1d4697. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPW462444036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e46d40ec86c1ca6c44bc946fb720be4e6a0f709038744c588d1a79b7eca94. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPW462448074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12035a4ccb6fe365c38b54faa11c8a5d5b3e04894883b019d5b71203f2a80e2e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPW462448075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f0fae517c239b9a1e016f9b9a38a860736d045d4ff7bb4d37c8a04c85c1f5b. 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/JPW462448076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179bd98845e3b5a22f0a05b4e2b3b1e6427a7ada74573f6a99de5a35c14beabd. 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/JPW462448077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4091b6607b24cb2f1e50875fe08f1779e524f2d9461716758fdf2ca844ea5802. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462448078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d85cd01171dd4ea4d82cbcb966cd9ea722d1ae31c7ee64bb03e8815eaae0e9e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPW462453260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156c85cdf7dc1a2f8f3efae7971d91fdca3f5685f01e3bd7260eb9c63b76b32. 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/JPW462453261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d717a2e6366466ece44254839637c96660bbf3bc5cffa4d394d074817867f7. 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/JPW462453262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca827fa5613a7cb3daa489875210f17fc3a53bd26f803274ab5628ce42103386. 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/JPW462453263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a51c100c19e6a8f3758a73cdaaef3b3f448bc03d31d766b06b654f3dd858fb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPW462453264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3350f27496d3a12a4304159d6d093d4c7da7f1dd574d1450fbfbf51f217075. 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/JPW462561192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c518ff669077e169c48617f2da47e107707dc402a38f2c56190ff60a5ab230. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPW462561193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ad4a7de03718e9e34793237a10d9173b651e668430bbed106ba664c77c1875. 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/JPW462561194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f2b84e80fdbef7057819ed1a391807db03c4167f8049ce4e183dfd1dfc8986. 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/JPW462561195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02944a979528f9c096ef5b006e2addde05ee113ef95f811cfec54add0fec69b7. 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/JPW462561196.