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 0x347ec81d2ee9b5e02c6c1d7e01393fdd0aaefeb3556d423f50ea33fe817cd315. 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/2c8dad13-7b16-44a2-a47f-c2908e59a395.json and https://artists.proofprofile.net/proofs/artist/2c8dad13-7b16-44a2-a47f-c2908e59a395.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 0x03c59faa658342c128e730c696edb1d6b473636d2d9b587ef458ec469bbee810. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:27Z), 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/QZPLS2504074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbec35663d50bf7ee1784428aca8766cd13b27bf6a34e3ed5f7911ac2ba56da4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPLS2504070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7402d396fdc9efa2c4b81ede6c7bdb2e6d2f34b5ee07daea9484ecc16f688582. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPLS2504072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce4acad00a1857de59db8ab25b2ebfc277a6520871d164b346b47f9997e318. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPLS2504109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564d6547a1b5fa8e86b0081e43a82ea1af44806e1c8152c863ba769b412e6e95. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPLS2504110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa61964ecd1c8fd50f57c2b916d0ac927b74493ac9bced82575d596fd3c7b8. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZPLS2524252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912b549b47af76ea05bb66ca8666af58e73230da91f3b7cb1ab183b95d488fc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:33Z), 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/QZPLS2524253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58634fee35580450b7311b2866da2bb81fdeaf616d9c14558e87bd638c8751f7. 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/QZPLS2524257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e64b84913cf81ca878552a0a75ec2a0e13e6421b978c291d42d44ddf7f2fbed. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPLS2522160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26edf931ca0959812eacf9fd1f12d378fc02e30f0f5808846c571ac368f4f4f9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPLS2524255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ab3617eae1984a758efab711cd00373be49863af590626d9ffc49190aea186. 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/QZPLS2568525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd57cd6d58a125a59043946c54a2d857338b6ed30773c5f2de12e4639a137e89. 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/QZPLS2568500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94ccd48127bef1b8219dd51b533d1aaa72459f81b0d7651811a5094112f4b75. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZPLS2566288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70616a30366ee8b4c7c928a795c2c9b0b0d17d49c0137bc3f1fcca8d6cf9b1d2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:35Z), 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/QZPLS2568521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bde53135dc8e082e27870c6ba891fc5ab964d5323e4ead7a091b3ef82d9e8e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:38Z), 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/QZPLS2568518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fdc52d434898f932714d6d468dfaceacd9e2f92cfaa05c8eb2f999a0acf350. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZRP42556339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c3ac10d046d9101bbe58517a09a76207f452cce1bf8457efc57a8821acf0e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:48Z), 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/QZRP42553660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6821847e099c4bbf8f49b5edb35a185fd43640c148f44ee6876249d33b970623. 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/QZRP42556267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9a21b18419cd57f7e27a013293738ccff8bf577436f4ec67464e44f8e5676. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP42556284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985c12790fb6816cf7dbdbccc4fd81ad818d387488b31bb71a8e7ec590fe78f8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZRP52509055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9123446548e7d42b1458073c0bd0da536f14501d413640704eac686e4029b7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:44Z), 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/QZRP52509084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5bc88894dedb7f201099d885d7a0978b4d05c872ff6db0c9fa2f46a54e1c9b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZRP52509085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b08b8c15564dfac3fc3d6500bdb1190b2b045eb5da3d0f3a34339fdaf4622c0. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:53Z), 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/QZRP52509057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0e6a8cad7765f5efa6643cb2a11778a90e4ffbb0675569200e4745ac3e220. 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/QZRP52506906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96ac7681acd9c2da112190d2eca40af1c7ae8bdc72beab42c69c98d4962cbf8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:16:12Z), 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/QZRP52546498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c1f116c49e6123aac7f4a434c9518aa7244a129f4080da43727ed01384735d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:18Z), 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/QZRP52548285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60390e63ac5b01cc0b12301ce8900cdc144a78b079394bff6fdd1945a5fc1ddf. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:08Z), 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/QZRP52546509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf606ca5f795951a08d7f37953150c2be08dcf559f61d15c09e0b6a8924afadab. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:51:01Z), 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/QZRP52546508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1986f15ae75a028f7592220d49c85aa78ee4c8a0ad0e236d434fefb26e6c49. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:17Z), 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/QZRP52544701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f342487a87d6e33b43b6bf5b98d166b75c40fd5a791fcfd2143b1f5e762b92. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTAS2500592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ac4d6a5f4e4a992b5dd7f020b0e2f65bf757c9a49f9e4c4156dc0859744457. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:26Z), 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/QZTAS2500774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3cb981d98c3677504fdf43439c7fb98704514332c0bbfe476394565b17d17e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:55Z), 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/QZTAS2502547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1bf092583a1045790e7eb4bcfa019baae6a674cd8eddecad2b6ec3c11d7320. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAS2575858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24bb19cbbb90f64824298557423e0a1211c55376203e16343e5185c51e744e4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZTAS2575834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bdf04ec810510b3d50d04f68bfdb9fb46de58c409ae8c8372fd79a32463e23. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:08Z), 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/QZTAS2575851.