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 0xfeb9a4018e0f72317d35f2e4568c325ab8a3cbf49e4923d6ca09113bcc423ff5. 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/6112dfbb-63d9-4bb6-bd76-5ca5816828ac.json and https://artists.proofprofile.net/proofs/artist/6112dfbb-63d9-4bb6-bd76-5ca5816828ac.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 0x8588673bb90521c76745b766eabf360d50a1122058f1a516b13b763428cdfa9e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:53Z), 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/TCAEG1928195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4b47e9a3d311081c68d92a137f95232492e68e0ca3466898346a21f132786e. 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/TCAEG1928202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c60d915d4595218365ab440d4b369fac311219c5258c2cd4a85d4e5ef83a11. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:32Z), 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/TCAEG1928225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84238362db811276a09cc1c01774fcf3c6664ff9cf8c9ca250b640c157787dd9. 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/TCAEG1928227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a648eff5eaf812afbec049c8a697bd3a51327bf4753f02aeb62cac71ce533a9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAEG1928230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ddf9e6bec9f43ce91d9281274fc2e70c04746f2eb3973e504ca1ebe99bfd07. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:41Z), 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/TCAEG1928232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c31003f7d3d2260edadc2ebd27f01a80f7aa05132228056cbd1a4fe11d922ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEG1928242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033a8b509370df411420d284eea3d61b17f8945cfa46889ceebdf6b551933acf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAET2074410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e64d7e8bb0c9c6fb8c6cdf9471ae1cd351a61d94ea4789621d031dc8a428ae5. 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/TCAET2074412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abf53cd3d13084b8a465728c1f6de071ffe5b71febd5dc6c80804750b7142f. 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/TCAET2074413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbf574b9dc58e47b5232617c4c7a82d9442ba7984d11d0cd50deb3decfd54e1. 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/TCAET2074424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a48a012651a880fa67dd83f373add6201a1c5c8f8d810af67ae97da1ea79351. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:45Z), 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/TCAET2074428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382b8e6c2f498f21482cc9ccda454e8ae4f839446179a5939bdedc519faaee5. 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/TCAET2074429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5543cb65b3b0cc5d1d088c8538a43eb2bbe02de19fd0e1f87627b93185978e6e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:47:47Z), 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/TCAET2074430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b632b0535eace42a1c2d16772d16ea3197e29bdcc3397e1c01fcc4ab7aed3. 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/TCAET2074441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab7ac5c40ad9b0de37da9719d627d7b0c058a555519ff77072cf62e214d5625. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:28Z), 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/TCAFP2143600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa82ea97bf9ef60ad111e7bc8dabd77bf367032b5c93b9d5a782ce93ce08da1e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:59Z), 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/TCAFP2143592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a95d65a128f108dcce70cc7edc6bc3236fc397bf0e0dfca4395c57dc96246f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHX2450592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e42610dd52dfc21196e5f595e5b81e0394839bcdd71ca64bad6fc6e4515425. 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/TCAIN2404947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c22ac9690d548812e686e80b5ea7e2cb56b0c6cc821d48a2dd524a618da4b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:23Z), 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/TCAJG2529515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76192f649ab4753438f1d9bf558dace3650cfe90ed9855d0a0cb0ad915032ca6. 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/TCAJL2591897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca77711a9f91442f140900af07ed55865b7323d80814d9d231a41c913c55711. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:26Z), 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/TCAJM2593968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c921a2af2977ca2e377f071942b787bef01add12c59701bca0bb0b4e752d68. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:37:30Z), 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/TCAJM2594006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc771721081306b12ebfa8159544eebb7124f5d9f7350f62e83b820a569f61d60. 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/TCAJM2594013.