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 0xe36c61c202266f464b738c2e3188ceeac89607d3c31c0cfeadb4e76782f6704c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f8b3b47-e3b5-49ad-a52b-c7f7e9cfd6da.json and https://artists.proofprofile.net/proofs/artist/1f8b3b47-e3b5-49ad-a52b-c7f7e9cfd6da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Assassin's Creed Valhalla (Unofficial Fan Theme)
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 0x03142be567a7220a899ea7d55ba0a07eb61934209ded0b947f6422b1b33a5fb4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6L2084318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a4daf3e7d848bdf3e49a3b4de49306230abfe7939b1f17433f557b0bfd121. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:19Z), 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/QZK6L2084321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f39b7a7ca6eb80581c50de98ffefd827ab24fb6738eebe44d2dcefffa6e9e5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2084323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25847a2b934ceaec1c1546d3c35c9c515fc5a7bbfa65b6835ed4ad6c8856fe2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6L2084325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf5b273336ae5d40a1ae99940d78571411592b61d2b74066f1f8052e187f13. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6L2084329.
The Monster Inside (Bloodline of the Grid Theme Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f776165beae2986bf7b0f83615add90b0e26eab56bf79573ab000577ae59e29. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZK6F2122541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92241d159bca34c26a9594eaf5bbdfda3ad02664ddf7125ee70e5d95d4520f76. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ42222783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00067adfc523bf9f476ac3672a7468acb8bd8ff216680f1715f1b54b1f2877d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42222786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3192a5136e0ae824126dba748e29ca608ee58b3f1ce3759e5628d4b1f05cf8c8. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZK6F2335679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba86daa2bb285457b240ccb49fa532006cb9902ab92b32dec1b882d2dfdbd096. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZWFT2483239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6f95bc8a457f3830bd4adb57c5b74342d2f301b938bc36a625f388ac3facba. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:13Z), 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/QZWFT2483241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe4382fb4acba6281a155646113ef5e0df7933745463408446d719dfed5bd56. 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/QZWFT2483243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de79df8d6e866cb5cdb939bc33bd6655cd677b2dd501c2d7f12b5f3de3247ee. 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/QZWFT2483245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f377ecac724c3bfe3045717971a137f2d886614f7f3f73c95bb00ff67a7dbc. 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/QZWFT2483248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9bc73906360c4140cf64902a6341c58fdb79ba5f11002dce9b842b480f4a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7M2421506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9aeb7b3740d3a8b282e110e449a061a660ccff3111c6b5d27e71f08b28d870. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:39Z), 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/QZDA62500492.