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 0x4f2d7c0087e8d025cfc33ca583ff9fc4b7adc35fcccc3e94703c5a89b110f8d3. 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/4d5c03d1-dcbe-4f27-a9ae-d3de4cc58e55.json and https://artists.proofprofile.net/proofs/artist/4d5c03d1-dcbe-4f27-a9ae-d3de4cc58e55.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 0x6cd5d19806b50c1d984ee54746c842db8075feb69f968e2c6ae6c746bd32ceee. 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/FR10S1480068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea95b15b762c081d4a4958a45c5758547cfb494dd8f921afb69c3403fd817479. 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/FR10S1480069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef6bfbf28e298f6e32d51b833d8cf88670a3998d697edbe1d4c3d5b16cf0e38. 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/FR10S1480070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7a892489ed9597a2c03681ab8220043eb75e5dd640744f5f70e528db7db006. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:22Z), 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/FR10S1480072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422dafb032cb5bfc2607bff5bd3d8e5045637605f0514aaac1ef5c619f3dce23. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1480075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ce541e56c701b82fd767a3448c87226b1478a29b320fef3785bc0d8209291. 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/FRX281531911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572003efd7d0acc6458e3877c4b81961b5758a8ec011b7b44845732cf7fbed92. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR7HV1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd29b566f907cc71516fa8d58f591b10ab5d32729d52fe18b23b3d27eea0fdc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR7HV1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb07eec26794f7c2a3a421e9a9d3cf44ec8dd2072d31b10e4f17f2eb507954b6. 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/FR7HV1500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc661cbd6896b908fb3045adca32eb1861f3140785a3c0ded54f693f2d3d1e3d1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR7HV1500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78325bee64f762ef4942118518e816f9d4bf87f237e4a3c35bd35f4bf35492. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:30Z), 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/FR7HV1500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dddd5edb3c359e6d733da404ab267d051f7e42ea13b54e5d727cef7bcd108e8. 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/FR7HV1500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58fb9a500c1f1230dfeea0cdf8da05668b0a2267bab5f32fd9dc98cdafd025. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR7HV1800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a02dc9c5b4ef0b5af43e561a2bf5dd6022fa01a7383546c046f16658d048fbc. 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/FR7HV1600410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592d4ba10e1cd133767f9217efc624cbbcd0a61119c1ba691dc39a1b3bdb88e7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:37Z), 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/FR7HV1800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a1f24253aa764c884d604f007411089caf409a8720c0a3313b3e9fc604b30. 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/FR7HV1800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faeedb12d339de66793659609521f60d6c33dff51111258d476b02e1ee57903. 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/FR7HV1700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3a3443b508b2a149feca84ce35d6ab87d7e26266a6c251fe083da5ffb851a0. 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/FR7HV1800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb92f38c8112381a6da492d8ee1f91c16b97416c4e50b1466083c77806ef16b3. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FR7HV1800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3e5170df070487cab883270e49d96a383323e5c260e9ad38d0037f87b96589. 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/FRD5X1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3eab8bf5daeb87e612d8521526e2fbc8049eef48f01c2de529399673a592b8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHN62198188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47850fa2d5c6c4f494ce4c0585b3f07373197bff38a6a77b4abc6c587ddf57. 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/QZHNA2108404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150d3186eca48abc11251ae3443dd2f8170c61a9e44c45671cf5fe7a849439cc. 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/QZHNA2108406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc50ed438032690793bc3a06df8037b9a1a2ce277f5e326e728a1b219ead02d. 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/QZHNA2108407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6494c026aeb6f362f8e84c82a89cd570781dee5a290d65c25841f54d0fe79d2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZHNA2108408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff786c2292cdf852a1dba4eaf5777dabc610da4998e5feeed97528a91b50efc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:08Z), 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/QZHNA2108410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367d18ba7c668ca8ff891be34ce41e40bab81e39ff762575758939d275a0018c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:07Z), 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/TCAGM2285360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e84beeb991482ef40ed6d32fa873ea662232d83415737cf260d4be5b906eb53. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRR642302235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee75bdbf6964f184d633fd4a2ab1f41f8b30c7a2b229305fcb14a2c306d9d2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:00Z), 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/FRR642400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1870749955f9fb1a81701f73e4062fab0cdf4f04e3c93d0619e5143de407e382. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRR642401023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6be39878ca86145e61aa13991de9594a447a2e5a2a052de1c7baf3cfc4fc0a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRR642401028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee75bdbf6964f184d633fd4a2ab1f41f8b30c7a2b229305fcb14a2c306d9d2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:14Z), 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/FRR642400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83356f5bc5675c38f36201f4a4c265e3f8052e23cf92a484dc630f732975dd73. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRR642401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5781131b5f0996a210aa49b7f88264131955ceb7662c72fc01c2f03195f13. 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/FRR642401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875f3e1b38392a6d7671ecb4854ffe34c8cc0134edb775fc7fa73026cd5d2f6c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRR642401022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e4300dcd88cf2bd26fb2d130e15f089e8553373c7bb6f8bce06a738bd08d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12041490.