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 0x45d3e99b8dde91c94767aefbae3b09201b9ed993baf897f473916c761f6da537. 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/0dcf6711-a46e-4405-bed6-d8a6130499e9.json and https://artists.proofprofile.net/proofs/artist/0dcf6711-a46e-4405-bed6-d8a6130499e9.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 0xb2bc1512019a9c807691fc056f7000d1ab2023e5c17531f1c3307b3325796dbd. 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/GBYYA1200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecb9d342893a756d365784754be96ba7a02fa06117fb70418f2011c76f199a5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAT391300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa963eb37a18a681ac18d7d4056c1204dc1962144ebe27f3f1fd694ce39d52e5. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBYYA1300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c38f6c754f6d6e189b45c954e03cadb02d4c9f4d56e43bb730ab30d8a318af. 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/NLL561405387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a961d4a5999dbab665f661373063a1f82fd2bcb32d03b2e84b0872eaa17b77. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKL5V1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b8f9c1ddda40d5881416d14a91e806a591ddded3f1ec730ded397da3764b74. 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/UKL5V1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c562bcf7d2f21f31f9085190babdfb5a91f8c5c5d159947104f72db5ee7eb. 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/UKL5V1800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32ab8a1a403315e7502a870fda5bc85e4c4ccb8ec2f135480504dd23af7a560. 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/UKL5V1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65272ac71ed5b31bbc3267be9170ba091f62a98b4bf227946cfc2f1682a1f02. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UKL5V1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1da2964d3981af8d5d3fe9dc67a2e5f561d42f7dfd96233b4e392381c162f9. 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/FRDX62407670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9840db3a1fe2355a60be37e1768dc8fc426bb6354e0ecfcdf3a2fa0dbf32ae81. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRDX62407680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1da2964d3981af8d5d3fe9dc67a2e5f561d42f7dfd96233b4e392381c162f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRDX62407670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9840db3a1fe2355a60be37e1768dc8fc426bb6354e0ecfcdf3a2fa0dbf32ae81. 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/FRDX62407680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf92ee0979185e5a865a6e98c6552d9a6847b2112111a96b9d1f2036cacc305b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRDX62407690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc06c6bb73f2554fd2c9249e33cd81372f54612db97ddd27a3d24b2b4707ef50. 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/FRDX62407700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3705719e2671028d241080115b947a7a8dfa026dd64453538364278297732ca. 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/FRDX62407710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8161cc655a988d0ed9cdf444d7a1859fc49112bffdfcdcf7fb4fe7a943ae988b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:46:48Z), 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/UKL5V2500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddc6ca7a01cf58b763ce50b9362cb2e7c79b3cd11811c4abc2dcdf3516be2af. 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/DEG931791786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc06c6bb73f2554fd2c9249e33cd81372f54612db97ddd27a3d24b2b4707ef50. 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/FRDX62407700.