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 0x5ebf5c3b95755d1a3464d58c848ec6bf6a4f0ac2f761410acab26c0d90489392. 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/e6adf96e-21d9-4f94-b6a9-0e6d19ce2736.json and https://artists.proofprofile.net/proofs/artist/e6adf96e-21d9-4f94-b6a9-0e6d19ce2736.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 0xc9dd5ad8ef31339a24cf646445434d65c6241d7949d021c6f3b028923203d71b. 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/GBMJG2405808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ebce57f0811eec7ed5552f79965638f7657bb07ad62e2996ffb16ae0cd9d8. 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/GBMJG2405809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9e46c2df7d7e62d8c746c6d572fc86031b11afaaf73b5fe108b3e5b698fca. 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/GBMJG2405810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60efa2613d1914dc20dbe73ca72a0608ce0ec5b1ab848a811969989ad5a2eb84. 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/GBMJG2405811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff2336336bde21d1429a39934c5b17bf4146fe7a1aefb15295b44c36497f39. 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/GBMJG2404561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0043f1f2481a0e85b11d93bca3547a41fc2aa7682763f28ecdaabfb18b54b5. 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/GBMJG2404562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f3ac930555496b9f645eb275aea93e098970b406f4c029d13560149a167870. 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/GBMJG2405812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d40222ba536acc81e1572e5f65e30e795bb46db765dd611200394efaf708d. 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/GBMJG2405813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95c5880046917f2b6201b506fcaee1ca0270155df85a0b02cb78be48b89967. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMJG2405226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827020669b2e789836bec00ee90094a0ba23ceaf2746374b5a8ac55dcd2d6de0. 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/GBMJG2405814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c593fd60692d52eeaad007fd30212e5f26139ba9dd9a04a70f73e736c4457c. 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/GBMJG2405815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247d1c95f28212973e636090dd7a9811ebe2ddb5265377b94cd015cc44134ec4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2405816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95c5880046917f2b6201b506fcaee1ca0270155df85a0b02cb78be48b89967. 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/GBMJG2405226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff2336336bde21d1429a39934c5b17bf4146fe7a1aefb15295b44c36497f39. 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/GBMJG2404561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0043f1f2481a0e85b11d93bca3547a41fc2aa7682763f28ecdaabfb18b54b5. 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/GBMJG2404562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff2336336bde21d1429a39934c5b17bf4146fe7a1aefb15295b44c36497f39. 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/GBMJG2404561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0043f1f2481a0e85b11d93bca3547a41fc2aa7682763f28ecdaabfb18b54b5. 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/GBMJG2404562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac2e68fcc6885da5e4a345a985c7545877064e0267c8f52c573cc6885a43d5a. 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/GBMJG2111321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01d8d0bb5b84de252da14ab8163f0f950d63344da6dcf3cefee7b10124ede84. 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/GBMJG2111322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9758ddf02db91150fa162188791cac4f1f3e7d09855a043aa5faf9f2b0985c7. 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/GBMJG2111323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035db7078324da8a7b1f478a24b2a477ac2bfdeed3a4f9bb310f28aca34d033c. 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/GBMJG2111324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375b9f4b10f15398e2d421c8a963324bf882d2c6c8bce9b52acc51d2cfe23e0. 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/GBMJG2111325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b165396563d2991decbef71fa570d67abe98136e337732264aaae144ff122. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMJG2029712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ca8cf65af7fa8d95d2738c7d7e019dff8cf2ea4f0cbc21cb2a1ec9d6dc584. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBMJG2011658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6614255dc4f08b192139fcc8b6063a9be72b0b46eb42e5d8ce3a349e3c9a8d8. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBMJG2011659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b72f3368ea9c292abdb4ee11619f17088ce969ed2266f7fd4774de0950a398. 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/TCAFA2048749.