1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8e24efeb98d42c0b92fe4005eef94b0373a3d0663f520f46c16bbbd1337ff087. 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/bdd2e8db-3f92-4bc1-ade5-f23a2f6c28c0.json and https://artists.proofprofile.net/proofs/artist/bdd2e8db-3f92-4bc1-ade5-f23a2f6c28c0.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 → block OTSBitcoinBlock must exist at that height 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 0x47531f8d44d9b7ac99effa80ab3242941a5ee94bfa1fd5adb842e386e0568d44. 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/USB961552918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc1e1eaf83d2055480a63b13bbe7f1cec57c90b0c182d6c9dec72bc38fbe719. 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/USB951552923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48279ea6af553d7570139ffa3a6802bacbd7ce2f0d1603c0c6c0e07c26d5a5d5. 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/USB961552927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b08ed0ea7aec28c09cac9829f8451f9239c9af8fe540821773e0855b8673c0. 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/USB961552901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc05100d8b54bc67319e88de9d6674acf7f52037965a430f495b5f35cec424fc. 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/USB961552903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281307bf2f2734ebf34f214542bf8b355a0378959eac98d8f561e3362f2cae3. 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/USB961552912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8eb5f93a4cc34f7cf7acc473f39915658ec527129d01c1cc13a2b9344ef9dc. 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/USB961552907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34363b8101804302d4c07a687a7305a1896b9cf3d3deacad5f6b5bf111c00c8. 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/USB961552926.
"Sometimes My Father Appeared to Enjoy Having Children..."
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c666054c5623d49c2e0ce94f91d2df882fd564a54656fe6949df759acc2a05. 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/USB961552902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c658581e6a8908f68a0a86bf59b0c07d4a33e489694530a0ce73cf466e6a8ed. 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/USB961552905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44e0d94b10d06e23650c1f430dc238c236b304d865aa1b28189298145a1539d. 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/USB961552909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08ea1d1117984e13aee63def854de3f7ddd1e48b02cc0d419035c550c654395. 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/USB961552911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9148067e903c4c8f110bfb5f4c3f190785fd0ae7b2b154e22182298946e918b. 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/USB961552913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a0a1078f3c668cec907ac803d1e5411df2ed5c58f99518da4f9c40e507fe72. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USB961552915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe97190a1cc2073ae8f363a58ba45f3a5e30fcc035faa88c63a493a5f9391ad4. 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/USB961552919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace0bd10eae14b24a26790dc633974e43759f7b88fbe70e99bb1e3d0696cc4f4. 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/USB961552924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0697a947f99ecd42ca9b5fc0fc5321a5b65b82c7b72eac0ad86086d62726b51f. 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/USB961552917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3004ac214b114ab9c265447fb8ef40c75e0ee391b25b31b1e5b15e459b7d3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USB961552922.