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 0x91f44d1b453f36e7fd72bae6536e9ddafb0d3469581e49c13bc8a3fe14c4a5c3. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c38d64d-5092-4938-bb8c-90502de2a429.json and https://artists.proofprofile.net/proofs/artist/1c38d64d-5092-4938-bb8c-90502de2a429.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: The Show Goes On
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 0x3a29681114b627d96f30a400ab96ffc4a329d1a16aee4a7f37c046b9f5db2e4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630854901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71444f6904d1a673b6d19ef236e5cc217cac5c7f67eb70a2e6d7c1098faef9. 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/CH6630854906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d334ac354e98acc6782e6ee32c1caace28277ea2c1ad31fda2d4b56b70ad9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630854910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8c6f423aee95bf04f84ff8ccd08d06cfc7839f84d5afd08e1bf8d1653c0a1b. 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/CH6630854921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534f268cffa13c8cf67b02c84adc85a6460e8463d79dfb9fb83f5555f5f98bce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630854924.
The Golden Age of Light Music: Childhood Memories
Roger Roger And His Champs Elysees Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc0192e34638b88642712c182a3dd86b1e80ff5ab052021d5ce16b4aa1e945. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630652506.
The Golden Age of Light Music: British Cinema & Theatre Orchestras - Volume 2
The Golden Age of Light Music: Joyousness - The Music of Haydn Wood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862a6f0202e587d9d0108178e166ac55c9b9dda8ece674a5c373e8d246a0302. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630652105.
Tower Hill (From 'London Landmarks' Suite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51896556da7249b44aa6fc20578a2d9ccf02f98a8dd2c09f2243ae206285b8b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630652116.
The Golden Age of Light Music: The 1930s Vol. 2 - In Town Tonight
The Golden Age of Light Music: The 1930s Revisited - Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e062de7a89eb9b5026735c9d175fdc0d897e43efc07422e481193cd9d4f5d3. 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/CH6630956301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be41e4623a174be0a15356698ea88e27ff8dab1f8328cbecce0ad0d01cc9734. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH6630956309.
The Golden Age of Light Music: The 1930s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406781a920aebc876626c0bd15a71dc023913ecdd117b4ca30d09e82640dbea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450606.
The Golden Age of Light Music: Charles Williams & The Queen's Hall Light Orchestra
The Golden Age of Light Music: War and Peace - Light Music of the 1940s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cddd6274753fb293787593be83581c23c048752d8a8a511091dbe2ce74767. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6631057101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fd6b65ba81440b87a4b72f0803a915a5285555da2e3c77f63937127f165fd. 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/CH6631057102.
The Golden Age of Light Music: The 1940s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bd62ac72584815bcc5de23f748563b13ff05209fabf21a1696e82690f455dd. 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/CH6630450203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e263fd76a124dcbd5770e6e59cc4e84562e94d57a0948348d739dd12fe155. 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/CH6630450205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08924070ebe3859236b0d064b18dd7a1f786d09746d428c9cec7de2b58244f07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6630450206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d608d906cc93a7158984ef80962183da62670689040311211050eee3bb88233. 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/CH6630450207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be8575352829d78cd447805084eb898233f815fd1d36f827d16a007f58f5cc7. 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/CH6630450208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c38f246ba1811f8f399bab85bf1ffcebd5d59b0a6c1d1568155731887b88241. 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/CH6630450210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc2fdaf485d888049b76bfc3c8b1267c9b0091e5000a65304d0262c22bc0a3d. 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/CH6630450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e37e26cf08164866c536cb241efe3aa05cd844096d518baeba4a3d29b1e4c2f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9e4df995d9095f2abc27190b1ef2725743769cf7ef2f71659580ce0290c62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630450214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4921a1a7dbd32cca2314ff62ccd2476cacbfea571c1396791ba5be2fb142f269. 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/CH6630450216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfa3414865e36cf0df331364d5a4edaf3f6368083b3ad145343981611ab9de. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd175d36bdaab681bdb835c746010198388d5d722875826e5c30cccc10c5704e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6630450221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061a98b405a4722074ca4f611f61755de7221e111114db001a2b40c4937cf6f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c21b4f04f5894a7fd7caeea59db735dc2395081da9ec6dabd45f4a2c96537c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6630450223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b8db575fd681419e4aea6627fbf46c8b517d9e2a889780647bc7cc51be494c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CH6630450204.
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 0xfac42ac87e706cfe30b32ccc384555963f0352545716104abc4052a8b1fca43f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH6630450217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870463f87849fff1c900e7f8d0a462869267fe592a1c398e23c3261e587c6bd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CH6630450219.
The Golden Age of Light Music: The Lost Transcriptions - Vol. 3
Elizabethan Serenade (original title Serenade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466579aba8dfc41633694855ff566364ab84004fb18c12854098df394503188e. 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/CH6631158405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139b613d81772c46d4c87ff85cbd51518f0ec01ec7d8055f5f74dcd6a820538c. 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/CH6631158407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f6c40f8cd9b224eaa8e26fd3cab65e8c7e6c4678f124c7d77ce4053f176d2. 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/CH6631158424.