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 0x7b2ba9272950a97e7f41fbd6c925b4cabfa0da4659a9d98a88a693b018b8ca48. 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/745e0977-27d3-4fb3-bb8f-ac58edee3175.json and https://artists.proofprofile.net/proofs/artist/745e0977-27d3-4fb3-bb8f-ac58edee3175.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 0x7e3e9d74d210f121fe842f29df0f9ea2cc130cc2961bfffd3ec136c779407bd2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:27Z), 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/SE5Q51701098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161dc67d330cb2a5daeabb17fb4839363e6a326e04319b3aee8167c5f29f3c6a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5Q51701124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24395490c2f0590c94a3b3dd263cbd02f14915f80f2b32af73717a3047e5e5e. 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/SE5Q51701126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2528a6e785b58fae72f8a847a769bbcf2f161936d8bd7b086901cb791b504c. 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/SE5Q51701127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7de19d801a5ca82b0c39a492bbca109f6f847c1f09588870960ff263e805f3. 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/SE5Q51800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915ae4a23b6289b8d13841c83236258344ace5f3d8cce43d1c027a5d7d99ccf5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE5Q51800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e3ec8088b7f61e61d01b7f2bffd6443f1135e4328a0db981ac5d13a774bb68. 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/SE5Q51800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e6635c6c69d64eb98b39eb22505ecb498dd2c9386d6a24eb3ae6ad934efd54. 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/SE5Q51800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206edcd5d5b4091ab929f433f36ec90c5da1848da52f31aa094333a3742f6234. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5Q51827633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f76440f2c2086d29c076195c29d7891e192e97a746512659735574162e8956. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:36:31Z), 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/SE5Q51900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb2f2e8dac3fc6b6cde64628282cc2a5f3a58d7d9f28e44346755411098b7bd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q51902615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80448c22c681d4d71c1cdbf31e376587898edeff3db4c2cb5b8dad5aace257e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SE5Q51902628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff964b4d02b6d9f5b8dddc7051b4cb8c34d965b2f1e7cb76c2312ab97c4270. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:57Z), 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/SE5Q51903082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80448c22c681d4d71c1cdbf31e376587898edeff3db4c2cb5b8dad5aace257e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5Q51902628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99108724098515729e22f02cafdb38f1e8b742c0a2ca68aa437d2a32c0139a3. 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/SE5Q51903084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19631a08a9cc2dbc9323df8932456325e04403384eac626a0ae8ec71d15298d3. 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/SE5Q52403874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c12944a52c20605fe42e1565d2c44f3140b6c1fcda01caee2f7797f3acbe20b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5Q52304595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561d371b540758c6f7e8c56a7724605f0734f46dda31ee91b727bfd911e4ec2. 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/SE5Q52304597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abc641afe8657ac00b3e02ee9d32cc68b744bbc866a3d75c3e7b8c250d0ccc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5Q52304604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adc226987e95d1d100483b7799f8a66a476dd376e5cc1765b52ac8f9972aa37. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5Q52304596.