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 0x98ba4329225ccdfe258eef77c5149e775d27f26da850d2672a1ada4d51a6c4c2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dda15a06-d29e-4619-8b4a-14f35f6f2605.json and https://artists.proofprofile.net/proofs/artist/dda15a06-d29e-4619-8b4a-14f35f6f2605.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 0xcca5e0ebdd7facaa417466be23849bb5c7e796b365ca99440e4771ef1c33b0ab. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:39:43Z), 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/TCAIQ2419023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f31d548b62b2303a63da29dd9367a92debaeb5b93a316be8220357c84bec71. 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/TCAIR2419026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55646cd65c6c1ffb0dac612cc5c96643599e62910dbb32056025840927161d66. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCAIQ2419029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f33d4b0734c3d29180fdbd219b7f137aacf875a87c35e72cf64d31084d57b14. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:14Z), 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/TCAIR2419032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaa7a535a768517ea386099c5c1446f288e0c419dffc09e81706ef3858e9e55. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAIQ2419035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1289ea5c32c151b08ebb154faf95d98d71dda7a18971d769c834b12072a6d6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAIR2419040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e86a32682475ca1763c373bcb0d349e17d10166c9189b90e9322aa46f15ffe. 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/TCAIR2419042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767484b8e28f518830540c11669ba2884f0d46daad89f4c9c3a2f9ea23c615f. 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/TCAIR2419045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3359b9e1a50ad5f9748684ecb315f4c7dd2e92390f7d402bebbf444343f296. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJC2415610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5119b8e1db916fad8895883acc1712008a826df3aafd38b395c6c2f50de0faa2. 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/TCAJC2415613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7930bfe36312770832009334c04d5092129362ef74ab1a5a7897acb27fc5cccf. 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/TCAJC2415617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb096af47e33655a050ad4cbd3d3ce9a2614f23209d728567c5a8ee2f3157d0. 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/TCAJC2415622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1075b74c6253a4773ccd03abaed959d0d1c8b7dcda7796f7ed58b855e5aefce. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:26Z), 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/TCAJC2415626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f67e94301b5b2c6d12b2cc204aa54defec08d9491f79e8710a2935b4bbd9d. 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/TCAJC2415628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2155447795f0d1a75e02830ab1c337fc4bfe9b5378d0cdd201a23d6aa28af537. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJC2415630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee18dedb16f0aa869bbde17af1d7560a9b27ae17f6eeef51a724d465ef85c3cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJC2415632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e58d1573831af2dcf16e975e4c5fcad62098a2080c432cad3efeaba6f57022. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAJK2591515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a50aaa5e880b0f1cc6feef109372f251b0fa205c3d42716200fbd7f62d72a1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJK2591516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6dc51d2f8fb9c5b3be55dd4699781c526cc6b0ccd40961dd6e873ab516089c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJK2591518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15fe8a24ea7f253bfd61ff2565c8919fa83cc50cd8804848556244f5dd66c8. 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/TCAJK2591522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d49e8b2591c9400232de6966387febe8725a52d1ca23e40bc7d15ba222229f6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJK2591529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1390c978bd1d623b0d60f4f79108d265200ee77f59769cad3c317bcc6ac0d. 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/TCAJK2591531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54585fd7e874b949dd70f8e49238bbd4c6efda67123eafacf0ee2741759008f3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAJK2591532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88228ff402f1d1ddd89b4618f68535b3371c58741c882a9ced778f860a891a92. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJK2591355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476f8a4493c12fdf8477675f8d808bb36ed75b6c6ccf1f610966c7e45c597130. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:51Z), 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/TCAJK2591357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0796bb362cd1ceb71e377559b7e4c32ddf9542626ae631e2c392dd48ff8d0c3. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:43:49Z), 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/TCAJK2591365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c455344449d9ff1f3e9858d5b671d20082b98cb1cea025848329f4a63884b5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJK2591366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9852d85ace81f6e20743ba952021f40fcb3f8c3e3954510cd5b39d0c89cfe00b. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/TCAJK2591369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cbce07091aa736d57f145a56333d8a318fb79809cb4188dec7a7d265d1ab47. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJK2591376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea35146e6cc5caa3639d0cae22bfafa13b4b207836ab0ba6dc2345a7d8b66db2. 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/TCAJK2591379.