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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ade5aa9e891baa84682983dd05206765dec4270fa9649e13dc594f90bdb96a. 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/dc73a3ab-c610-44c5-89c2-8c0373d3494b.json and https://artists.proofprofile.net/proofs/artist/dc73a3ab-c610-44c5-89c2-8c0373d3494b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf27034e5b489e90a344c1ee360e37c42304a53c4863fcba6e17e4dd2f76025. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USY251669706.
A Million Ways To Die In The West: The West's Finest Volume 1
The Dark Crystal:themes From Epic Fantasy Films And Television Series
Misty Mountains (From The Hobbit: An Unexpected Journey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a9ee4390a0fdd268d6fde675d0caf1dab47e88c4383512e3ff5a917e44f85e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USY251711774.
The Anvil of Crom: Main Title (From Conan the Barbarian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ed5ad63a4c7cbf6a20af1e58745cbef80d170e8b76f84b460605ce6ec8ab91. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USY251711775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5a4913a8b04df1e787298e8b332bac4a3be3d6d359713b2a549ea3fe3a9406. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USY251711776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9dd0e3617a91ad313e2be3f9283ca5de56627f5a067afb5fa6d99b8edf9139. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USY251711783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55d8c8c58a6e77352f9d5950a3d0a156c42167d13dbd4742f0a9ea79edc833f. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USY251711786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bef45774207e9b58d006970a044daac404576dfba5ada6e592fb107c83fc0b. 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/USY251711790.
Chariots Of Fire: The Film Works Of Vangelis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc6ff23948e6e016154f5e1389eb4895ff13cb170f447b839b894cd6fafbe4b. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/USY251818157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134badb40a3e4fdfc112ec2594b7eb6eb203a2a8960be0d2f3882e221609613a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USY251818160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2de7beaf1d713d128582e5275e09426f05c0a4d0bff1889665bc3c6ea91460. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USY251818162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd547204d90896699515eef6c03c6324af1f29d11eb661b498137293d4ae1c1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USY251818166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e20889ba5f598dd9149776bef0c0f59a9a0153da2153a06e23e74abaddf40a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USY251818169.
Escape From New York: The Film Music Of John Carpenter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f7824d3a39e4a29c6c450d6f16b06e5c618489e6c6d4a4342329e1c818028. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USY251832076.