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 0xed19bb92e566f782912f10372e5ea3703748c74a283dfdf30909b734716b2ba7. 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/a03b8484-15e5-4f8c-912f-169df1581a26.json and https://artists.proofprofile.net/proofs/artist/a03b8484-15e5-4f8c-912f-169df1581a26.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 0xc3d737d379ce64d6cb065e42bdfbb5e0c052efe3e7117c2c83961a23d64bef34. 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/QZJG52136141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b527718d4d352b01938447b96b3c8a1a42f68fe7450a0321be868a0ae5a041. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZJG52140924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf503329e97ff3b54f45548940424978000e2233e13a3a1df4fad436f0f6aaf47. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZJG52136138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347f78a9d1b08c5589f93eda63300672f99cd4191d212504179fd0d2b63c2e33. 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/QZFZ62235662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa52c888dc6dbcd02716933dcbb061c1cf767f484e57cbe77b7f32c1959c3a1a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:41Z), 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/QZMEV2211716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ab96443015608787d661bde65549ff2a0d43366beaefb0bcff199356a7327b. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZMEV2211720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9551d2f48989b17eee7e8fcb85ad2fc437d2c9e59196ec69096f9ba69f6099a3. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZHN42255576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58532752ee49fc3a4191dce909e66455d36293e8552e1d6a20faff522953b366. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZHN42255577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53358d21c647d91658e33b66179b220447a9a84517b7aa7686893db46417365. 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/QZTAT2241429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb41ddeb6c6dea721fdca44da883c047ea203796e0f36395271cba51bb90e4f8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTB42293849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c67da31abe63887a7fd17868626534ecc936f60052f1f14dc00aaac4742ace. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZTB42293850.
Set Me Free - Phoneline Extended Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8606a7ca21ddc0bfe5cab183d8a6eff02a41a954f3ba86c8c8c35451fda1275. 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/QZDA82319820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b8c769c2c9cb0ba544cc57dd0fa6f4c2dee94e61aa68b4ac30efaf7b771b87. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZES72357066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01591bfc4c821b77f6b55107897c5060a2bbff2f795671c88a716c050f14bef6. 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/QZES72357067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e385731b48c9de8cc9083ebbf88acf28381e011880cb551baacbf3f6e3a8ca. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZHN42321637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37c466ba93cb1ed82d7d89500f124bd80317dbb99b50c58637d4d8ae8eecbb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:06Z), 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/QZHNC2327490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f71e6bbb343817f82b9cafc59c541f25f0dbdf8dc4e97b2216e86d7a3e0ac. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZK6P2341634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521a3b2cf689d70d6a18d367df10616d5df5131a01c5fd352ee78ed2fd66548e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNA2221183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ddd052ed6c5181ae3989d7d5366debb647bf8a6342845cb7a875e07a0c43e3. 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/QZK6P2218183.