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 0xae1c07602275dc9c5165f0ad691f2a0a69e521693ec241b2caf83405ee93ce86. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c0540b2-f94c-4bec-967f-ea42e8ed3df4.json and https://artists.proofprofile.net/proofs/artist/9c0540b2-f94c-4bec-967f-ea42e8ed3df4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sky Valley (Original Motion Picture Soundtrack)
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 0x87123780c869effde3f5820b7e11c1296a5e3f110ffef655e460eba940bed360. 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/QZNWY2495877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a748553d946268c309cdb8fc60deaa5f27c3da5db5b0a279d1273fe1f2b21. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB82465558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032a7a7487a360413cf87cd50a38d10ee49bd56174caafd45a7249af0debd384. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTB82467712.
Haunted Hearts (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01f49ecd8ff80527bc6ab96d26ff06a8329a7e556ed5d99ac74c6d416338c2f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:33Z), 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/QZZ772423160.
Sashes and Hearts (Official Movie Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259230f137c6e4ad18f1666bd32b3e35a6a03ddb48eb1549639ae1faf4d64222. 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/QZHN42574534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05c7affa8e46ccaa428cf96d42144645b12a11c8d578a02f1d038e2bf5d1e8. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:22Z), 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/QZHN42574535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8594367a4cdc380c5e81508b019a3bf7daf0febbc3d0b9049b21aa7a5c20bcdd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:18Z), 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/QZHN42574544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2abf2de2f12b1edd94dce8082b87866394348a9fa1dc0ecd48692d079722f5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB62560628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf66f4fdd85071ea494d2cb675c4550ff9406ceb2bb63496af76dd80d018f42. 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/QZTB62560630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83247a2098cfecfe831430dd8576f65e76cd1c18da299b65e14cefcd3a9e0430. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:45:36Z), 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/QZTB62560637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3b2f7207942907e505fe067ba76d3e5fe60ca48e6c2e93df4264d74d9624b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB62560639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4bf6eb67b4b797dc6846ece4646fc8746d024729d321973329128e0ce0e9be. 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/QZTBD2566128.