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 0x70192ebbf407b13cd8debcfe74a6a19667f727fd17b5e5e204ed92c359cb869d. 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/9c5c13b9-d3b6-456e-897b-a93f0025a1b7.json and https://artists.proofprofile.net/proofs/artist/9c5c13b9-d3b6-456e-897b-a93f0025a1b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spellbinding Classics: Classical Music for the Witching Hour
Pilgrim's Progress: Pioneers Of American Classical Music
King Kong (reconstructed J. Morgan): Main Title
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 0x36e14561abb4ed959ea25628b050ffa07070095aa7aa4f4e56392ef22f15a181. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI199709501.
The Adventures of Robin Hood: Main Title - Muted Fanfare
The Adventures of Robin Hood (Original Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdec1e0cfe503096b0a19628b5ba852bd45586642570d552272461166c24130. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKI190326001.
The Adventures of Robin Hood: Sir Guy and Robin Hood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e25e7752abccd6399d3a15e23d20b7d5059b235cecff8c3c0bc536ae83ee930. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKI190326002.
The Adventures of Robin Hood: The Meeting
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f6b0b0c293a5704771484cdf1aeabbf26da9b6762564eca2ec97f67f2cd96. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI190326003.
The Adventures of Robin Hood: The Banquet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130b784c37957cc1006a06e5abc852d956ccd3721248c3ba9559c83ce712445. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI190326004.
The Adventures of Robin Hood: Robin Hood Outside - Robin Hood's Entrance - The Fight - The Chase of Robin Hood - The Victims
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4fc427434f82957fdffc5a45dcd631bef128dadc4340d93e2cb1086563350. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HKI190326005.
The Adventures of Robin Hood: Robin Hood Meets Little John - Robin Hood Fights with Little John - Jolly Friendship
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70553efa52639b21478b4997c0390a3964290aa40ecb1f2476098396582d5986. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI190326006.
The Adventures of Robin Hood: The Oath and the Black Arrow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e6a678cdb99ae5088953f45f8f85e8cb65cac61572e49fe91728c962675cc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKI190326007.
The Adventures of Robin Hood: The Fish - Robin Hood's Fight with Friar Tuck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46734f4cb70b1c64a25510c39a60c79e6b3e0b9f950ab9fc0f259e35be21dc9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/HKI190326008.
The Adventures of Robin Hood: A New Companion (Friar Tuck)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5cf88b43bda6d8559a79c2894e6fc2c156d4b4f9048730748ee57881cc71b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKI190326009.
The Adventures of Robin Hood: Robin Hood Attacks Sir Guy's Party - The Attack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc99966ff104be91b775002631ed9fcc1df71df321d0ad94575a6feefb9b66a. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/HKI190326010.
The Adventures of Robin Hood: Flirt - Feast - Poor People's Feast - Gold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9212ce9bb73f837419d9d00894388b9cb3d6b262546a30634637c898cf4d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKI190326011.
The Adventures of Robin Hood: The Poor People
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e89480b938c1938981909bd221be80d312881f800a4d052812b5affb94fe67. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKI190326012.
The Adventures of Robin Hood: The Tournament - Robin Hood's Appearance at the Archery Field - Preparation for the Archery Contest - Robin Hood Starts to Shoot - Finale of the Archery Contest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce35eec22b4ff0a3f2b97fecfee66243b432d26867025e9698d6cfe23920841. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HKI190326013.
The Adventures of Robin Hood: Tribunal - The Jail
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30018322506ce96fc45bc2476dbf602ae5e0344c7097119470d063e72d5dba32. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/HKI190326015.