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 0xdc13cd6d9aa399a1f9aa08e86455f48effe40ab0489ded7e47f1c77667e930cf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64347686-dad0-46f5-885b-26e2cc60d802.json and https://artists.proofprofile.net/proofs/artist/64347686-dad0-46f5-885b-26e2cc60d802.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 0xab0142aa303c2cb541e5d601aa96903b391ff4e6c07ea663b8b179b17b9b82ae. 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/INA2W2304075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90ed014b406acec45a7970519b068d478b3fa30289645db8142e27240f98953. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:20Z), 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/INA2W2304078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56726e7f47449aabfbc4a40b7f88a9e625879b7c18037635f105f37d8105af2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/INA2W2304891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd3d142357b3a9ac4a5451490e32007b705a50539455a95945f18060519940. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/INA2W2304895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b5bdd5bf92dedfc282f14031f9fcef28e8436fa2b384509ffa7ec8485dc97. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/INA2W2304893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa285f50063e1258a333b91eeb6aee93a0f4d8945bf48585081eada05727b075d. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/INA2W2304890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8a3adff505d0332de51805ea3b4c75c4b242bb170c791d5bb09f2513669f13. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/INA2W2304892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14458606c781a70d929adc935281cf3eb95e78cca75b6694720813bdd7571845. 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/INA2W2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00405542adf17d64570f284abe45ef7551a22de1eb699c81fbd09464bec1f153. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/INA2W2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd967f6bff5ad51c1143aade7bfb118abbacd6a112aeddcf65d1bdd918cf44f2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:42Z), 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/INA2W2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf4e550ad87a6ad32456f1e85dd8d46de8f920cf8d29cf390ef7594021e57b. 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/INA2W2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8ee51a134cd56f8094b67a40dee8006c53e65dc561f7eb0837da023f05ceb5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INA2W2400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125cc1cefb2b8803bf054701e1680e3583488f27ed776e6b01694b4c64888e6. 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/INA2W2400760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb669a95d194c9e35611f04929e4cb8e7129357b9d9e5b01e92cdbb243145d2b0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:59Z), 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/INA2W2401222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186845a40cdf5062150a7373eead5c6a61b786395c1864b65dbd8018d00f1d1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/INA2W2401444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e0bcae452b747aea68bb3cd0fb6f1cff0c8cef6af841742e11bba4adf0a8b. 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/INA2W2401911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f3ad55b024d222d3beceed190ede4dffab13c14e9331ab3e20bdbc72255b20. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INA2W2403090.