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 0x40d466a1cc8d3b5723f0593d99f836db333ec7e8244ef7bc013267ec842aa3ca. 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/7387c960-58cc-4949-96ad-aa502f16ebda.json and https://artists.proofprofile.net/proofs/artist/7387c960-58cc-4949-96ad-aa502f16ebda.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 0x5987451fa58ef1d5af6b50777d62eed2d4b6e85363af13f8125b7a9f589ef2fa. 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/QZAKB2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90e0c6fda105ecfa4ac621db4d801843e3127f6f40efbc2f72266e1ee830c70. 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/US3DF2520699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435b3d1cb185495eaebbd932d45397e1bf8daad556d5901616b23c69139e26d. 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/QZDA72526119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c14fee2a8671d55821ccf3268902b2d29eb96ebac19099614d78890d07bc4e. 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/QZDA72526120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98a8bdb21950e7aa167ce451bcc6e1ff005be62e167ec70fcb24fe6e867f75d. 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/QZDA72526121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3eea89cc83c3cb307786056e6731fbeca55dcfc51970c2306efa91c2c40fca. 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/QZDA72526122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b1de4825e2ff624c15bd318035f9e7feadac5434630b9ac43f1972aa43dcff. 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/QZDA72526123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9933af552d4ebd62a01c9522acb1a899a178b475a731de5a236b1ec85b35c795. 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/QZDA72526124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d2f9ec459f7ca10eeade9df6e0af591020c9e2f6b8d9807ba99aff78c76570. 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/QZDA52536849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ebac4a6b23f7b8c24bf8ba4ac7d93edbd4ae03d3a38862c97bf16cca1254b. 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/SE6SA2402245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0057be00389b2087aeeb8054fb362b90fdd5e8acf7d4745c8ef409a74412129d. 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/QZHN52452897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c2213970e887a3f0cdd86cb6868da4953712185eb79748d23fa65c5c4017e0. 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/QZHN52452898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a2c6e4b97b2fd287ff7d7ccafa14fbd417606ba6ee119ca07b88ff28177e6. 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/QZHN52452899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb7366b301c0fc4151051d0afb205365d9c8c18744dec05f0425e821dd3802. 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/UKXN22387374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7517aa1fcdd6b6f0c5770dc08b8b6f8ea1048e73839db8b9130770622023f1fb. 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/QZK6K2215030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d07abab4eb24a1785574bb4a863b891ac27b7a2746fcef6cfaec4c5941afb. 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/QZK6K2215031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccb47036bb206c990934ed317d0dcc427c3c9f0c003a8b5cfd56b50e77656ce. 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/QZK6K2215032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce9a4cf334ef1066d11072f40fefd5d9ba0f21a5b9912d300e329f1497df4d4. 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/QZK6K2215033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb2ec80aa2fe974eb4b35fac54d5fbb90d5a43e789e578a668c04397fefaf4a. 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/QZK6K2215034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0ed948574610e9b1e207dd31ca67399ba0fb57fe226f995ae85673c863ff33. 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/QZK6K2215035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf50d1c88ed3d9e7430338ddad3cdf4cdc14e5b327aab6789d594f0486d8ae50. 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/QZHNA2206869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f00c904e0639de4295ee443657be682a76f89301c990b8b44f4fc3e8871c352. 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/QZMEM2183074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf864a7eb8f7c1876ab0e65be139fc305017c3363de3378fbdef57b6c6c4fa3. 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/QZMEM2183075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe305f4cae2e2a864f7f75f94be85701312253abb1a7168ce050600594fd712a4. 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/QZMEM2183076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3db0d174b0b916d1a7c680f0f630cc2ee12242f676fb0e6e095c8c906b9112. 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/QZMEM2183077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dcc1bcf50a3d98f482d6f50f5c1eb51cbf407f66f632210cbb2bc7b3a0366f. 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/QZMEM2183078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f742074546fe3fd30f020d5ddd4e70703cb98d55d51e33acbd3db165e135e. 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/QZMEM2183079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf018b3be61649422cf4f7039cf96fa563ea7c880d789c9e4c2140dc444d86cb. 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/QZTBF2369844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf018b3be61649422cf4f7039cf96fa563ea7c880d789c9e4c2140dc444d86cb. 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/QZTBF2369844.