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 0xe2d92b88f2693f03f1c04fe7f5e09f91beb34efa16757749fc40b6364260d540. 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/9aed0325-bd44-4787-bef9-7d909b784304.json and https://artists.proofprofile.net/proofs/artist/9aed0325-bd44-4787-bef9-7d909b784304.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 0x6982ac51dbe5a3b0d6255fed4eb33762a891d3302d6de77c03b17fec7de1fdec. 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/AUUKF1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6ca106146d0ce4e108c553929f9e24aefb013e658a7b6b3c7331f7c256e14. 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/AUUKF1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e85d4cf7a3fa848378d547f90f487d9b256a6f18a0c591d21f5911703f6d9. 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/AUUKF1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0cf7e510c919719d670e4fd68e00b7927a3e345d68c58bc29b682cf7000117. 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/AUUKF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12f2514b301b9535dbd4dcca8a261d9efcfd9062df726c9cf6bdad7f30d462f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/AUUKF1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56fe6c9a5dfc6770a0604d14fc4b59e4c5ac404dc4494fa562de3258cd7ff3. 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/AUBM01700624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14eb6f4f5a450428c95aae4f2d7b1147de5046bff6650ba16e1b5fcdb9ce20b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:46Z), 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/AUUKF1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706103620fe090df827c629191ee1ae9a8f3ec2f5ad77f298f4a13448cf7bc69. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUUKF1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57aed11bb54c1d37f47ac7646fca4074e8c9d139b0af6e5fae0d87e9cdc6eb3. 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/AUUKF1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c603d338569e90390b0dee5297731395c83aa58ce32fc81577736a431573e60. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/AUUKF1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d42f33cac2ea1f7aa35ed0a854b90e791126c5cd642c4850565fa767314af. 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/AUUKF1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fd179c5868425b7a57fc51013c9ee8e461f874f26f930a10586cb4883458da. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/AUUKF1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4446fec4f11bb89e33032ff65121ff15106cff2c70871d63e2ebfd76300cab. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:11Z), 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/AUUKF1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf794e44b25a2b015e02b7fda2474d816642dc8f71ac50b0881e1f518ca0e399. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUUKF1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87150deb0511f922c1b7e8cc37a9dba837b45f2f85b0cc5f314246c8cc0229f. 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/AUUKF1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c2aef2440eba303faa347600cced3e0876f5e628fc9eb701489a399afb309. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/AUUKF1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0137cd87c0f54a6f71dbf89c0416bf3b214e11be4056b7b51f0400d57f531cf6. 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/AUUKF2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1018bfa66ec19653fe87d742d19ced80e8bba9d6b252e71765eea02c08cee320. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUUKF2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7457242f16cd124e5199defa0a9278ff635dcb329a8247efb9f8fd399b551312. 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/AUUKF2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7bdac5ead93da89773e1b7ab305941d79a8982c25627ea5e8431957f8ed0ea. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/AUVYV2500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b5dcb5b10cf39ea7a4964349a49f443af8c5d25f20092af5d79c97d48c734. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:02Z), 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/FRX452503281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe035966a94fb2e60f4416bb0c374f941f51f3c5281949fc3a51fb6219cff3b60. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX452503282.