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 0xcd10e1373ed3cd5645972005d726a8b80b562febee68414d59387e01daea59a1. 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/5e38d941-760f-43b3-8542-0497933c9830.json and https://artists.proofprofile.net/proofs/artist/5e38d941-760f-43b3-8542-0497933c9830.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 0x892c7b540b05c567ec08674ce8fc7fb921130121817cfee87fe00fde3180d13d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:10Z), 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/GXBDS2324001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b99567d5309c7ace6ab21a75b2fadcfcb6b5ec106ac342a5688a4df31a0a6d. 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/GXBDS2367648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0b5a94f1329078d4e8dfebde5b8b6e31b28e17713d882824cd3ddd5ddeff32. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GXBDS2354586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd1fd96e803ff83173b00023bf85ecb6b063bd1dcf506baabf83e1a9740ec1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:04Z), 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/GXBDS2301228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73546b8d5e337f45932677ae482f87056f96977b38002c5dfd2549026b3ce093. 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/QZW9K2363488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e02ffa99fdf481710904b4c887bbaba35bffbfebe7c16436b2e4f37d5baedc4. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZW9K2363490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d04816cc302c97ba9921d3d479b1f8636e58c403dd123ff035448a6039d4ea0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZW9K2363491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8282a6a67149388a60d1bc7480a6ad997cec0d144a4f570f0384323268f5b2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:10Z), 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/QZW9K2363493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f5ef8f117d82b282be9c8d5a14f66bfbb638383cf523b1bce754b8c1a971d6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZW9K2363494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cae15e9d89363488bc6ecd0e416368aa1ebfc2f9dbb7d4eb5ad1dce1984f434. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDHM1714576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b4a332b43ff6e88ec4747dc3738bdebacd97b2ffec6c389236e2e857e60435. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ES71G1904580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614af6d1a1c8c39d248047abd74f861d00ebbc8895bbc0f89f0b41e0afb8215e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES71G1904581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccd06bbaa225b6a733f66219e205544d17198788abe242613f1fd70bdf7516d. 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/ES71G1904584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7338325263d46a3f2a93ab93d777d81f5bccdd4783fbc36311794e7fdcd081. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ES71G1904586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bc7de06c00c2da172ac21a3c714df8f1b76f5e07bc8403202dae069bbd9bf8. 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/ES71G1904588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f6029247c17ef30ba78f11461556c2fed4ddd446e19e59ddd2e1e604097c25. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:01Z), 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/ES71G1904590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e310d38838e005cf275862c5479a3ef82b875c70a859ea073388fb5d00d5e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES71G2001702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2233f82e51599dac29b4edad0d6276563ec8ed4e160d670ee4fcf23a9604116d. 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/ES71G2001704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7806f6c1df851c77be20f16556e91849e9c64d6bdf2eafca1f7edcb804d653e0. 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/ES71G2001705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa31d4dcd2ce9a8d29833bd56d0ecdeaafe625481fb00bdd4d363a1d4ba69b59. 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/ES71G2001706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21aeb15c87b79a17657b3c45daeea5b2574743f122119c78243a69bd637d5c3. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ES71G2001710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5cabbee97c0db9383d8a1e7c667bc76164fec1988575d18bfd43b35fe5f3f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ES71G2001714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec36847efd375e6710bc5505a2dd1c0a2a4d20a351b10cf357286f2e31369d52. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:45Z), 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/GBSMU0106626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e21ed6b79d3f66c055340118888af11d82f9c09f28668d43fa22bf32c56a91. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU0106647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0eb3349e6255c2c01ab3f5c8922ccfb167daf77a43fc8b90492167d3707d7b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:42:33Z), 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/GBSMU0106756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4be8eab4477de77c5147ec71801df487c376e6bffa487249691e743ff8919bd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:29Z), 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/GBSMU0106758.