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 0x13d811705cd92d5c9e58f69a632c56854a7b191ef87f665af64d03e387b446e2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af6ced38-cfbe-4feb-af29-392faebc9f5a.json and https://artists.proofprofile.net/proofs/artist/af6ced38-cfbe-4feb-af29-392faebc9f5a.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 0xfc7ea7d48358fca4c9b395e5057d6d95d994b008e6a31989852bcea0600526e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDE2333856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730deb968e8d88ff4559dcec212dffe821627db55a10e3d33baac6fc1bf028c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2649472f7cd47505475024a9bf1579ea915ae23bb0223b9992a783f476cf20a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMWW2396002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf38de2448c923e11f3f6de8fe4efe561ac85e46bbd298c0127ada4cc50aa00. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMY2242348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b9b7a4978449da390bb32b21545cb05242a9d07e092d1df7c59d7bd3111549. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMY2242340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd895074c61d09fdc4415373c542b98f03dc78a76946c2f50483633d6813268ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBGP2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd159a7ba0bb2a83f6a31e6a5fca396828e82dbf6a1bbbf2624b96954b229666c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571425fa719a096105f5114e57d2ce848cfbc164b1a64facf5acdcb82909a292. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMY2242349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed549e49eebe03642d06a8ce0c19a798b02d9e4eb1bbb4ab77f3b3325478540. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f759d6026b556522f8714173d7e1d8cd9fc6afbf644e6c1d0e9a0c38e2e093e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC0UT2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9456bda3e34cef1690965466ce26bddc6cbde23e5e884cf53f0868067593aac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKNDN2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3c16217a3df0526927cb07614accdbb4818817169da4dc7e6a6e23465e81cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNMY2242353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1e36d98baf7682fea172ebed002f14ba3cc100594e17013415d13bf9df3a63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9012b58382858374beb3dace60d6f48eaab8fb09ade17b6ed28925c121fdc44. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d3b6afa5c8edf8e469edd19b67d6340225265010828083b5323e93d2aa817. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBGP2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adcf19230b3106f37d348e0d544d49c953ef055be5e9c119fe16b239abf2163. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBGP2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2349c4062d46b9b2cb3335552e870de47a796c45876f770cca8762d4fbaf5885. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXZYA2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb75826fbf7ab56b6e34a9efefd7ea02d12121caecf1847adb741eb0531d9273. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC0UT2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0288520b4e2abed501c3e81ab83f83dc9cf4b9ca1abe685516a1eccf239de702. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBGP2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e46c3720a419a1aaf6e83a09939854b8985a4c63869756558dc7b1047c748. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBGP2300052.