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 0x0dd9513215b3e34c5709da24233f3779ad3e12a2a7d94ee7995f417b36d4ad38. 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/4e7254a1-8bd9-4850-bc20-0d1011273541.json and https://artists.proofprofile.net/proofs/artist/4e7254a1-8bd9-4850-bc20-0d1011273541.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 0x898072cd1d263caba6be1a39a15d2f65a47baf2840b69910afeb3e7e8113d8e6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBLV62302101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc2ac99eebde5d6356322ef98c2bcfa1e869fec464d4c286ff5da67ebc7ef19. 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/GBLV62302104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19252d3ddf2a84a3844fbc8a16068399b8e339ddb57994d6bcc9854958dab3ac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2460400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505c5f9735e60e71779f357fe7b65c7b0efb57aea53578187a1e813fa446ad3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBKQU2460401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec658674f6996c89d9ba71da02c5c1c99615f2392f3e870683ab27e594a5e77. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBKQU2460403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715651ad8d7ae2d20b7768f3d57e81158954e0b30ffac8c18008b980daa43873. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBKQU2460405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145e258e2a1a88811ee89cd0ac123921c01a50a7d42c21d4f56ad9d24be92b3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBKQU2460406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d949dd127a63c236acffaa767dffb045950527d73f2c266b8567f2e757b98c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2460407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653f3aceb1e6ab3f8c6024a65d99b60a116ec9a3897308955aa5fd4cdb313c66. 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/GBKQU2460409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489b071a596ed06b066912f5bf78d8b44597e10f7c8afd6c39da524f9b90805c. 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/RUAGV2406800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c0ea5d96819ffad892df82c8e2ac72171d9d9b05e8298078209789b0c4c4ae. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GBLV62402591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa3356e757cddf407230150e3edbfe313e2ada1652949928ec113a26ca12476. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:59:33Z), 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/GBLV62402593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f8cf0551ba1ef8b78305834cb0b0f50a345d5d24563f184c7cf5fb0add48e1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGV2409700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba0e8cd3981a755b8f6f0c3391f317e26da56bfd9dd10046d2425b55ab01d73. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6MZ2439268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba0e8cd3981a755b8f6f0c3391f317e26da56bfd9dd10046d2425b55ab01d73. 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/QM6MZ2439268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc8f43fecff128f2eff7b161c95df6171793df3a043df8356cacc75dfd70800. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N22498334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475918b9dfcdd4f05e65398918d3d208f9b740f44fa760f604cb29d29321faba. 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/FR96X2578770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475918b9dfcdd4f05e65398918d3d208f9b740f44fa760f604cb29d29321faba. 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/FR96X2578770.