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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 0xb51226891cb3cf32d4857fbd51e2228a91c1c248f5a7f1c76f8704035b73380a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbe05e82-dcaa-4cc3-acfb-c1d8992894c0.json and https://artists.proofprofile.net/proofs/artist/cbe05e82-dcaa-4cc3-acfb-c1d8992894c0.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 0x1be78410d12db4285249d4cd62a99c32b8f536dcd60ef5548e6c166ba2b4bcde. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRVXV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be9a04dbfea19518e524a627eb9d196d7ccb491b3d296fe499f6942a3efea22. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRVXV2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c1efd9a1815814259d03240a9f1ef5bebce706bf145280a2be6223151dd58c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRVXV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2812bcc46516c0dd7bf9d5d54e6756444d1b4f93329c1486ece219c0127f20. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRVXV2200001.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc714e6f901d44d217a53d2cb6a937073e3e574f32f4c2c01e9f2e9714d44ae. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRVXV2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d02d2ded90fb12fe5543aeeafb5f63687f9dfdbe845bd8204fde7293a16858. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRVXV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d37aec35e539bbecf251e04fcc991773070b0277736d88c15d37ec1215fa4bf. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BRVXV2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c803506afaefc65594b233f835ba85725497dbf74582f6c80d031e47771114e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRVXV2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2e0aa5dc79231e57d06f29748895dc0714d846fc51913eb5e2afdd552e8b16. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BRVXV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356bde5f1a03009d80c866605bee2bf8d555f711f149fd351b38cfcee3b27a9d. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/BRVXV2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b42acbe94292a7f78bc9a710cfa5650e33b558ce263c1b3c59f7d5fb6daeb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRVXV1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53441f848c269bd3393c28b430171d1f81579ce0b70b986afa2169fc534a3acd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRVXV1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75de2ce55d9a3874f83a2ccaaab825816afad5d39956ad07a535fdf34b0696a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4W71300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d71027e2292d020ee270a117972eb4d3627491bfaa86892529d0f8daf1d93e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4W71300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eccf0654cdc5015764807386c158af8f58c1d16a4b5ee7fef38e7bbb00ba08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US4W71300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9965ae658671f5eebef7c30366d9c91b30c78296b2d9eff63f3f32f86438ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US4W71300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43e777098a4b025471efb8bc67fae94a3a019b95dc1cec5029645197b9dd5fc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4W71300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5473fc377774d99a4af5431c47fc2ca9484efd2cb1b07eb23ba36dce1a424c97. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US4W71300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585cf707718e44d345916affb6986ae8e56f9fdd54b3c998c1651c3d0a166bd0. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/US4W71300062.
We Must Carry On - Remastered Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a591c3b9753062b836e5b403bb4771964ce9f30ff067b49723ffd799a1b468b. 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/US4W71010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1ab51aeb9cdb705ad67d38cd2733fb30b6a23d7e870ea108d2ee198900775. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US4W71010009.