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 0xc49a9bcdcbcc383ace6ca062db462b5b148ccc7f90b9d7ae0806ebdd0d31aae4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b8086d-fde1-40c0-9607-435f32ea8d05.json and https://artists.proofprofile.net/proofs/artist/65b8086d-fde1-40c0-9607-435f32ea8d05.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 0xc88341f8ca7745065c804d450bca7011252a524dc12b63b1e5c275099d967c07. 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/US6QR2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb81526a49fd453aa4b6a731588054453f060248956e1e7d2ee4241631700c. 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/US6QR2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaac19c54378f3a710694c7036fc6254698eb8dd080fa63f7131e5e9ff4e5ec. 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/US6QR2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b581e8b253ad68c46380fb195d0ad5e2a5780af74c5770179dfa458f0b00fd. 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/US6QR2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c0f74990175154af9fdfe553d609edcb1a7076951c46b40df836abcd0ed3c. 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/US6QR2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e560493cfcf0aaa2d43c523bd571ecfe9d4607978262e0f3448d4905259a4. 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/US6QR2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482d544ae02cd791695774b32c764fcb95b8c98fd010681fd98753f238048eb. 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/GB5CD2216006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5409e0abd1af74a9e05c185a99a3c305c3097478b0646a03529a2fecb5a3f966. 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/US6QR2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c783960fd1aac9065c06a42f2a75a24bb5f0fbb453b71ba5d63b7d4aee6305b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US6QR2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce113f98b14927ae3dc48b217315fa95072643aae6461f8d1d88a9b1bafccf9. 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/US6QR2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaac19c54378f3a710694c7036fc6254698eb8dd080fa63f7131e5e9ff4e5ec. 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/US6QR2200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17ddffd74436a922ca1a98da3519ed57b1573188e7103ccb677fb9fe81e3a1d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US6QR2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a585d66a1e9f60432f0c6c00c594f0e9cb08eaf1e46cb9805fc530aba4ce2d. 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/US6QR2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c8e4989854a5c4e764f7146d461ff50c37000fd11258db17def089fb5a1a92. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US6QR2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4105066826d354589113ffadb424821ec408e5eb5c8a66f6d44f1f257f02320. 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/US6QR2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9e560493cfcf0aaa2d43c523bd571ecfe9d4607978262e0f3448d4905259a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6QR2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f00167f7f6d8452bf16465a7ccd0aedeb6206f87c5db8244fcef674289e018. 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/US6QR2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13346dcbd97dce5e15970269287445e300c5bbd1781b9b2a3106ea6219c1820b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6QR2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78512654fae7f186e9624c9f22cf1915883adf66aa37046e888da281208719. 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/US6QR2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff51dfd5a877db204f5918bf560c9a92643006ac9988f78c2d10f6491193f1a. 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/USL4R2248087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dd7cb0e0605cc01e6a0ebdb58dd584b176b0eab01ad05e1422065540edd018. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR3V52000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6417850f640f2cee81bd4eb69707f54ac9016127af4c051ec5e1bddbfb415d. 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/FR3V52000330.