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 0x0d12ab296064809e857a7ad139c472ce8092ecafe053b3a1bb57160830168ac3. 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/3fd5d17c-35ef-4e79-87d7-db538b31f620.json and https://artists.proofprofile.net/proofs/artist/3fd5d17c-35ef-4e79-87d7-db538b31f620.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 0x2a284c9ed1e33b767a43c5ab6eb62e605560de0aafa40965618af906d6f4561b. 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/USP6L2000506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36547342fafa81307c08992ecf5217f9e1b79b220401e273b374493fd3008468. 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/QZHZ51964689.
Cold in California ft. Gavin Haley (Live at Vevo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7401dcaa86c410403fc3f02c25d2ada8176374382909d157ab4485a7d4ea944. 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/USQE91600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bac65cbaaf90d4fc3b79fbe87cc9006f6e5192b578dd5520290d44ccc4bb0b. 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/USP6L2000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd67b509bf8626b1a27e050d867db065aef0117e922bba989940b46d972d886. 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/USP6L1900411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b7ff7292e80acc08b4acc9ae8985c481cc531a71d87a8a9ac82c087777832. 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/USP6L1900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7aaa8070d46dea7307141b9885e9977122dbdc684b0750c36e3b342553505b. 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/USP6L1900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8128ea1571b1753e92f9fa387c1e9e9c22e957180268b5e7658a721f05ca649. 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/USP6L1900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33474eb02c9207913bde79b1a4276eaa707d29f0d799d7b935e3876a1c563d2c. 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/USP6L1900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efb5741e35eb8072b88a495dfc138e626f0561290804f51eab2f410cb4540b7. 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/QZNMT2467176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0f8f9080d94f46cd494e721adf7c1c05e3bbfc9b5473a1bc265e945d203fc. 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/USP6L2000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bac65cbaaf90d4fc3b79fbe87cc9006f6e5192b578dd5520290d44ccc4bb0b. 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/USP6L2000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda24974379dcc4f45f457dd0da8efd2f2bf713f59e2f7046b4c673816cff169a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USP6L1800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab713d2edf22ee37b33a9f41fa4e1ab0672dfdb7c1dacd2be771c92d8b18b78. 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/USP6L1800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606277d92c1b316cff12fea4225e4ee1d778c99e141a53ab30c261b6e50bd079. 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/USP6L1800287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91a7444b7c02fe3236145e3f0fd01b4b70fe87ac4daf4463610629b8b3370e7. 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/QZDA52052356.