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 0x0b14c0971794d6e213ee2a9c9c0a34fd86ffe925309f11944ba45f6314a077dc. 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/bbe58f0f-b410-4414-a767-da3f1eb3d457.json and https://artists.proofprofile.net/proofs/artist/bbe58f0f-b410-4414-a767-da3f1eb3d457.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 0x800fd4723056f6852a56af6c4dd4d7d9e8f566dcbc9186f7aeff89388f17aa58. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE6A92032532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3de74be94edb36c4657fe3c31770c4ab993589cab6248916038266dff5d88d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX282142424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9e951c072db6056c16bcd3e8c7e5cffcdbc305afe78079c4ee06799088b20f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:34Z), 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/FRX282191446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc277a16b5a8e4607f82565709a49ffefb3a455d1e3b0a13d3a5687b884861ef5. 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/FRX762138140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cdae60697a56e7a60d67dd5dd9c8ad1af030460309361a759e4541c7cf0f94. 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/FRX762138141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331c1b07ab7c8d57b9a4284ca6cbd3bd39c402609ec67685597fcd9831fb6456. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX762138142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b72b4f9c190da1c73b2c6d59e0357ad7f809a2486e8ee3d4843ba0d3c0ad0b. 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/FRX762138144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc09c6bda86f5cf8246089f3da67ee60de09469045788cfd0ccdc54bacaede1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FRX452231523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd132367141e1be0d94a993ffe9d342cc3670ab2c726dc30f98f83bf38f4e34d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX452231524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7bcc29e45fb9a4d3b822618dfecefc21a953efa5f6189f7dbbfb05070875b8. 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/FRX452231525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d47c1f02877d8ea7b1e543a0e85baac13dd89b3613470c661d05b3187a863b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX452231526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe6b31580698a3ab66fe0443c86339bb3eadc945f765d0dfda95e4cf55b2c2d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:01Z), 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/DGA072298691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedae1ea9b583266e07973955bcca865694195edbf001451e939844c8dadaa8c7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FR59R2416140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a927dca6ff74afe1061ce48a4680ba654ebba6ce1c4ff4084ee1f82f0bb836a. 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/FRX872401498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed82244b274d3a10fa6b68c358af58d6052a834cb309e251ff6a85e765d1835. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DGA062485911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5c9370fa3e0545b5688fd195a7a84eebcc803dae05c2a2ffd93d1b09f83650. 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/DGA0P2436720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbeaa706c3c74d8cbe7740465575de162c461e7bcffce95940a473a1e23effa. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/DGA0T2456328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda1ca2ea2833c916237438910b7d9f17949cce9dc3b03055a8359569aab282e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX202520721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceedb68dc9699fac6a45b32e3193c6827c938690ac240ee284b5569b07aa9da. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX452598532.