1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa189f0d443a998f89420387819b0570070e3637e175471f886b7a9f02a5a8437. 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/8fd3f6a4-9ae1-4d42-8679-8876b09b4ca3.json and https://artists.proofprofile.net/proofs/artist/8fd3f6a4-9ae1-4d42-8679-8876b09b4ca3.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 → block OTSBitcoinBlock must exist at that height 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 0x83af1046250661b74014cea6b4afbea1ece2f99305415da167eca684571d4b65. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q51900618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffb493a025cb017f4803338c2d0fa43127bff284761f898ed817359913a9d58. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SE5Q51900857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a2238ce673825273bb0279da751ed3fa5d2076ab8f8a7c5eb13d3c077112ba. 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/SE5Q51900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297f4f2b29bfe0ef5e144b2945326ae3a59210a4935d44ae3fd0d72a11a1d9a5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE5Q51900849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3272f84bba9d67e5b11e36a31da0374dea311229174bbc4912108c3ccb43b51. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/SE5Q51901874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec23250eef081b585c961a229859d2fc84dbf2d3a004a3225e1044a01268c849. 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/SE5Q51902738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69502ef89de3a58b63cb386b36a1386f4141837833357197466b9b438a0c6b17. 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/SE5Q51903940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7abdcc472a6a75267a0b954ec026ccb4fec094f8be7ec73733edf4f718021c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE5Q52000933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1081c281bbada7ea228d48ea0a82b04cbe930e7afed50e01b5f2d1e20c04eb. 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/SE5Q52000573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b73139c6e6e1d8e292162bf6fabe0c18334c9d951799e82406213bc3729c8b. 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/SE5Q52000957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c513e5b8457172488cf556c671668802cf2eece5a8ae4900b93fc51dc28208. 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/SE5Q52003994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894f89a1ce9bb608e8b2d614b1d772a386609868c6158224685780cc31225c5. 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/SE5Q52200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563285ceb8ded4f4d90ae931db640ab5681c6abb3614147976527074fde05cc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5Q52301172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9f4ae37e229935ca2c319e7dca4cfcb61635a199cfc54dd0e5b316b688fe75. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE5Q52302436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f38445b2545e436e59cfd599db95f3a5a2e72f08beaac0178739540f3ecda0. 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/SE5Q52303182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9033dc44fcbf23930e14031b939b27bfec577374c4f327e6ae211f255af2fce. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/SE5Q52303467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf344cdfcb6c944e280d2b43da83c03bf9fb855fa20a9f52b60bd48f2d3cbbbea. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:27:59Z), 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/SE5Q52304835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7056282fab59649ecd09b6a4142ff9d9ebabe5a93e53f67065e62a7428740dcb. 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/SE5Q52400288.