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 0xcec799d18ee1ebf8ee61bf4f16cad7e93bc178cf805cb9f66a55fe107eb8c19d. 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/c0add78f-a4fb-44d6-ac13-1e84a8c7d4f5.json and https://artists.proofprofile.net/proofs/artist/c0add78f-a4fb-44d6-ac13-1e84a8c7d4f5.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 0xba9e4b8bbd6c003a38b895ef806d2f57538c0393889973a129ba59cc21706369. 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/DEBL60949159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfead95e6fd21f779eab83e02a1c7881794cb8cf5a184a3a82280598ed942f2b6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEBL60949160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6768ece57940f2e6651d57260572a0ba26bb48c75a5b205e68053383c0d9ee86. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEBL60949163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88b3d1beb1792e51298dd6b870925a03aa8b9fa3da09c3997e0ab90b1fb4e76. 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/DEBL60949164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e7de8770a1b88e8a78c778a88738779bbae2720b66197da3b7bce5187365ab. 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/DEBL60949167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48efa18d585252aab1bb9746c7e8e85cbbda7f33b451ef75eee52ae33ad5a7b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEBL60949170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded3baf2ec10804e0b9dcfb83955de5dc44cc5d83db3a479fcbb730536b5e88. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:18Z), 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/DEBL60949171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f129508a46e7c0d1f06ef7a7835d67d693bab30e0a3d2d3f90252690ec35040. 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/FR6V80771584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0854ed831027ddf2a56d3df271dab1e5435a24dcac86b26a251d78c3d085485. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FR6V80771585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8921066d02ddd8512743a26bc67ca7148377ac2ae8cd48923d17fe0e133fa556. 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/FR6V80771586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93175239bce0255a636a1499e85c5dcf24cf8157cf6d3b7fd644d4d2e7b25280. 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/FR6V80771590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71edaa1383d2e5f9f2960768b7478786fa54698d43ef14eaa4568202c5d6efd8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:38Z), 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/FR9W11603377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a86241bf1ad59eefb5c92acdd042aa2c00cda61c29533bd23bb3065af5c6eed. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:51Z), 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/FR9W11603381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6cfa4aa8a858dbe8e2f561f91afad689c71396664f6472e35b3d35725932b6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:19Z), 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/FR9W12209697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8397027a15e3dac06f9cb7e81fa19cdaa55098eb56259fc01a76c4f3ca783a03. 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/FR9W12209698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7af1f432428f34ce0541f0faf25791d6947d7847b7e40de4c91d68f1d9eb27. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:45:21Z), 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/FR9W12209700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3cdbc3a2b29caccfe9ef303845ae924a218fed13fb27e09e77ab4a56f0af6. 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/FR9W12234002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4646a5fb061a32b8ddf02da3ff60d1cdf6d527cad5e5f5a24af8fb992a8dc154. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:27Z), 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/FR9W12209696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fcca576d544d9a6b54dc16a34bb41c52453732dd4441251687e5cdb6aeb810. 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/FR9W12234004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a271dc022dfe168d8a10209f4c74b21d2da89c2b42d08b69624f7f15747e2. 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/FR9W12234006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa9faa5f32230266389a48e4aea1276993555e6299482d65721b2d278438e3b. 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/FR9W12234007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9feb326151b90fcb79dd917f1877cf7f1ccd2b6312d6a057aacc864ea653580. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR9W12234008.