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 0xcc78d66f32ef19243cbd2e29dee6423a6257bed6e62c462fd47600a1f5733ad1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9493a867-d564-4a29-a6c7-94aae7118b0b.json and https://artists.proofprofile.net/proofs/artist/9493a867-d564-4a29-a6c7-94aae7118b0b.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 0x74f8bba3dd0bb86677ff541d8b2a07e7cc7473cfcd8d0fa717255ff5936e8bd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642201660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65781833a962d6c10927b45d7b4bb773282969fa28fbd20546ed4a04ba56b301. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642201262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa8d11ddd22474585edf91c01294d2824bc0434ce84eff58ce9a616e23545a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITHD42000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ebe076db1d6c5270760d33bddb97f9fa02c7cd2c8b2e3e53b75b10ac0df689. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2070281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd75fd688556d060135798eeaeca83adc06ba8b7b4f24c80e1092b4b5852afd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R2055065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d64ecf8386e6b2a25ae9e75d1e10c81495a8aa852d49d5a387d060b4056219. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES52071937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e70f2cf51f3aa48bc2ade7d279f2110bf9108305ccdbfb24d4ba7c49d5bfcc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642300467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370188d3b5725fc2c48bf13d8f48cea06149d8f187d59d4a9705692522e9a399. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818577c6ad9b3697d1ace4b158805d3fffe1979adf42e5abe616ba69803de26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRR642300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65781833a962d6c10927b45d7b4bb773282969fa28fbd20546ed4a04ba56b301. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642201262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13c6f66bb3c5178d6c636fbe38300d752c496fc2b8b28c488131fe3fe54ba63. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfbf07aff63b27082e54e787522c9326606474f55b81c55d5f56b4ec0c22d0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e044b2f874fc6c537a2feb617b6f782c51f945098a6c416fd210a4f10ca897e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642201847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f8bba3dd0bb86677ff541d8b2a07e7cc7473cfcd8d0fa717255ff5936e8bd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRR642201660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7701c1cba8d66dab44811185f9b25b447369128c9832d57679d7f772c1657. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRR642300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18339bda40cffbb144fbc5dce5936111b6f6e8059827bb51862af3e2ae6257b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642300714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e63152f0b36deb44954e279f5f53045129425f8924c48c475daa5e988c8b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce6d63cc2944c276eb599fb9be55967f2ddc447439b62a225243a2be927c7a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRR642200918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ac17ce0d910b48496ffd4a281b73a472c3d4105b80e07cbf0c3227ba9c127. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRR642300473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef8d8c9483fcb5b1b92c9b948ad81c800df5859c8133a20c016ee760042915. 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/FRR642201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046afc5afa5b2fc3edaa25ba90c30d89477ff4a451dc7e924080a49c417fb9e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228e3ca8f376ea378a0333169ae81364397b4fa96136480784e0b9fbcfdaeb1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2559799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3c19e5d42caabfa075349a266f563e71aea9d7c1ca0842c52114bbdb0dce90. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2453683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fe61b3541396ce299d80388ccec46aa94a185968c1301ff70494b347430480. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME2453664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041aa23a7d57110ec44767e7f1832ca643df0c83a73a4676eb8e33aace78a86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2420295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245089f15e25de26c2634fe0445bc0cca77f9cd4975ae36de9b8bb96a1b2f645. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME2375776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ee0ecc82d52054b5bb4bc6d1fa8b68a566989f2fb9205d22ac6fc4e95db675. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2375777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1da203bc3d98a4e2a7d279734edbd577c564a4aa24c396183a861858831fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2375774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fbc5d482af18043135e48bb84d7c5f93662e847c70216513e710b644f65f5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2375778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2cd180a3dc7480c6257c6ea25c171aa8d290b268ab2c5c1c2d7a9e234c4f80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2375775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3137d69b6cc3a79fb2b2d013973c70696fd7ad7655b04d23c3effb829260d9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2375779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b49f765cf4bd522771e912d9bd58dd8061ef134c239a0560adde5eb38b48782. 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/QZZ7M2435001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb7a7fae93a5b4d73196f2a66ae6ee19dfd0257b6dd654dc351124608dbd26a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLG271604095.
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