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 0x436fcc5d115730e86e33b874f1bbfce1f0b09b613c85418cf80044bf0e9967b1. 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/ecadacd9-c49d-45f0-ba30-1fc1d6689bec.json and https://artists.proofprofile.net/proofs/artist/ecadacd9-c49d-45f0-ba30-1fc1d6689bec.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 0x560b1dd263649f7db073716b006c665c8181da040383cc5df7325bfd1ff26ec1. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/AROZB2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bd8e1daaedb0ce7795ed642b26ea6bf75dedc0a493b144edc1c659546b10f2. 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/AROZB2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee47b5da6d56c9ff573937ec37605019b101376d0df3e448a7b24b8c0ba031a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd286e8f3416ca6bfdb9729aa32a8bb8dfd7923c120b955606ff3d2ec00f4d4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49ad1840292bee8c5cb02c7b8a0c0a0e6922f02fbae16f3c34cd655ca838516. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHZ62230251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35a05b21e7e728bce6a249a744f9160b8e617cd7184c6837a831ecfe70cc088. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHZ62230256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d24ffbfe4045da7030a6aa6e731fed767346272c8e2e1225b3ac3e4abdc4160. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff0fc3dd3e6b9ff5feb97635517277d3999b687cfd9af5a730700b388cc2132. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AROZB2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ab82e76ab3c71743515aff3dc015e36d9fb41ebcc96a6b3e832d011d815894. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7610403540c8550430cf59448fc8f7754c5e1605a2d627080547c927968d10c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:48Z), 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/AROZB2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122d73c2633d2f0b0e90c808c413eb86ff6c9251a81599c9697dd6d3b0ac388. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AROZB2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dec2a11a5c5330a1c661ebdeb12e3f4100caff420f488741fe01286df9c302. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5fe9bd991bd811fb179e3c1ee07b95dd06ff8334ae24f98534b25efaf3e47d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8a051a1c621ae7b761b0c15a1064402a3abb823cd647112c0bbcfe36e120d6. 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/AROZB2200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f08d33a10eaae9cf24d195cdaf6a61d76bb586e950754ddf852099d17b490bd. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1566ba2b44044a1502aefb6e9b8274479351f63cd324fc763c9b002adfff2690. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AROZB2200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf992a648297aa4dea9e5b4cd3eae114c76ebfceb189e1b89d1fa5e8dfd4d6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AROZB2200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff2381b11e098c3d04e68cf8e1a413359546f6ccba7d61430ec42924aec1ce1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AROZB2200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa82b26648919067cfe687a45207062004e2a2dc60fe2becdca401cb9547f872. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AROZB2200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a76fccdc8e18011d42358ee927894b0e7dc1d8da905b0e3615673be4e2431. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:18:25Z), 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/AROZB2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5ae8dfb21fd35d648d6ceaca08c2e5491d26a193bb0deaf1f3a9491163020b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AROZB2200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4494f97ae3dcd406491f4b1797ca749c6ccc89db8554f0b09b7d041d18744d88. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AROZB2200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8e13727e2a996b4b8939663cac50874b9df5449e0a0d24901670d1718fe1c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/AROZB2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efef0c2cc6e2120b6b6052d94baa2d823332e52648dd79e8b1c86b62ef1a0b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:29:57Z), 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/AROZB2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71acbe805c9c821084b57e2c0c988f39eccf7c1ea4e360588c91c4c22b8d697e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2525807.