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 0x4ac6aa52ab94c2ffa01000b9fa1eb532258e99a6c59645a46dca3f32b8c94d4c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fbe5b4f-118c-4b95-a020-c9271604ff4d.json and https://artists.proofprofile.net/proofs/artist/7fbe5b4f-118c-4b95-a020-c9271604ff4d.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 0x775ac46cfbbc369b11d9f642521a18e087696d13e3bf32a191aa934f77a9074b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:01:55Z), 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/MYSM12300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eed7bcf04c921977818ecc802c111017e8d16c1e0f9299d8e4ab20e2fe7c08. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/MYSM12300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed0b7295a9731fd35ab9ad6838d504b3184baf4f75415b27b8c44bc35fe9ebc. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/MYSM12300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb623d1bf399f326b39f7bfe3eb0ea8bb3c932027af74f5cdf530c78987f8d6d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:16Z), 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/MYSM19410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7140162c27a5fca0f0388e0be7e551c0b24f5b2206c3faf8faf75e6e758c20d7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/MYSM12300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e65b62e12a0c10f834d846de72f9426453a40c953504d6fe229565314af7877. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MYSM19710021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c5bc82162a056ebea716c9fe5c58df3147599f710cfee24925f6342fc22f80. 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/MYSM19810033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa9263a2f2797d734da904dbfd11378ac172801208194e7b3b9c41dc9dbd443. 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/MYSM19810035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369f3f8a29844edb728510911145f153d94b3fa006c7923f0eacb27c97776dc2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/MYSM19900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6edd22bab761e31aea61ae0ee849ee7a50d5ad5f28b0614248b185d3544d7a0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MYSM19810032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4de28cf1ff75ee991469f4a6fb899ab2413ffc063f9a3650e2b600d1619c59. 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/MYSM19710026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8c15a71b4c69a09501a09697576e40d93d8b4033e65ffea83b71c357b0eef6. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MYSM19710024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223aca334ba2dace86574b37916a2589c195667a202dd7793ba647024d2ee95. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MYBM10000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27798c3deb0aa6a7fa775cd1c7f076c499fd1d88fbaba081b974863a2ff64155. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/MYSM19410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5e6adccbae0dcd3b3c5cf41bb1b1f5e964c279c717ddef72f2dba717d29753. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MYSM19510031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644549297ba73ba14001248c23aa24551f80446aed46bdb45603607669d636d1. 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/MYSM19410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3805f294cb51b18fa25fbe53101114976c253964f28150b5a8b98cc82d2975. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/MYBM10000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bfa74a80ab22c4cadce27006b632181b44884ed51e440fde096f944f48f170. 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/MYSM19810026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade5114009eb9d2dca3f84015a294fd3b131b0d3ff423644023ff604515a8aa8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MYBM10000351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd23317b8892aab4d28ab5714b57387cd057ebfd761a2675a0abda11d3fc8e2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MYSM19710022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5121b49efbed858e997abfffc661986d13d0f95802bb5562c4fe164564d6e50d. 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/MYSM10500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcf1beba707632fb389e25583bacbfdf3bbddc0134743909b7f58d919544752. 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/MYSM19510026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ed65eefec6e13a9d8e44719f78e9f2f8ddf2741f8e8c5247be09dd330a4da. 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/MYSM19610017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644549297ba73ba14001248c23aa24551f80446aed46bdb45603607669d636d1. 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/MYSM19410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf4ea28ddf571e38a62f20d3853d5917fc4ecaecbbd648d0dd5532dd9913c56. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYSM19810067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492ab3c54913daeecc481da4e5e080263d80368914a8d171ed4f5002bcab91bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYSM19410010.