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 0xc8231e07d531286823deff3fc2398f25f72c2211b9e37e6375cf7a9069fb6a8a. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/345f6829-ee6a-42e2-8518-d00a81cf66da.json and https://artists.proofprofile.net/proofs/artist/345f6829-ee6a-42e2-8518-d00a81cf66da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Boys Of The Old Brigade - Circa 1914
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 0xa1c01ed7a0a2868bdc44a1829c3af0fedfc45ec504b931a6d672fe512a9d5c43. 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/GBHBR0401764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7aa5df85de403e95feb200e963ce7a493114c96505d3ba556785470f286e3. 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/GBHBR0401765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c26fefd9a1410875f491188c80a16803f80596608db2501f606e6f16fa5e52d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBHBR0401790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f854d07e513731d7febe85c1ca95b18597c084f2b7e39c989863ab3ab94e98. 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/GBHBR0401766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a333ee89932d616d9fbc2cbf92b15699cd9e058004319d10e2b06627bf4b6. 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/GBHBR0401791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209d35d0062177603600b5c16075ce2e0e87995d68e1652b418eee593778a36. 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/GBHBR0401767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe1bf0ca6c1d4d74a572c1b4c6d1a9b47b94d7606a433b112b00e81feb740f. 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/GBHBR0401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76023296c4cb09ea927947d00d36aafd91a26424d158b81a1bcc069bd8e7fc86. 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/GBHBR0401770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020ba49ce125cf4ecc7f10f1930812d9cbb173cb1e68f0557a6909501324d96. 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/GBHBR0401771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a543e57b44f28a1055c584fc00bd398a12118b1e5914336a44215b73c528d2. 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/GBHBR0401800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99795f284c8bfcb0a8975e15f7c1614ea797bb39d062111f752d4b6090101392. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBHBR0401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788348054f639e7d08709fd99189e2047989e2650ed07f7507a5b23d79ec7088. 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/GBHBR0401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee938496ca267f11ba7627378f9ca902c4ac1885117fdaee6c462954bee14b. 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/GBHBR0401802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dbb3456cc0245cfd4d1c6110d2c19c173d6afd3eb8f439d247b100a1f1fdf1. 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/GBHBR0401778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fd1ff80d4c751d19681f5c64b5563890db59bee0b20191a27c39a8a88d5051. 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/GBHBR0401783.
When We've Wound Up The Watch On The Rhine - 1915
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524009b8ba79b27269dc3d80a623865a1f7e9b4ee59ef572d599c7de505cac7a. 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/GBHBR0401784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62027a7212e195041d3d1c2c3cad9a6d35671f118f3175884ee2fc700cd3295c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBHBR0401785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc18989ff642969f459dde39ff9e921fe0847f9f37e764a1919110cb2b4a96a. 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/GBHBR0401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbdc8539f297f60ffdb88a150ec2b7ee624e3741be011c61e9aa3415ec9cfdb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBHBR0401794.
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 0x780eb2c4a8e9e247eb964946c40846b0309c6ba197a6ab8e04806529968deabe. 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/ATR981126565.
Pack Up Your Troubles In Your Old Kit-Bag
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191cc5c00c5d4022367841f8ed94e810dcccc4414500cd330e8f11c624e21f7. 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/ATR981126566.
Keep The Home Fires Burning ('Till The Boys Come Home)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea7aa49066dcb81780c78d809b7a05357e92b08d21ff2d279f7e43ba6e8d56c. 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/ATR981126571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163d33d49d321167b667c7e82381d97e0613a66ee1de079a46185deb884ed57. 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/ATR981126575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84274fb72298893ec3cd855cf11efd66e7ac6dc5690db5f50e40d25baf0b39f9. 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/ATR981126577.
If You Were The Only Girl (In The World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f5ec8877856000ed4bc53b58a31d1c4a348417877f372359e066b79e598eee. 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/ATR981126567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd1ec5011bba325c791e2d9e463a8c629aee3b7ec087d3fd2cd0f04e5a173b. 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/GBHBR0401714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761081565a7b0aa9bbea1b648930c5683d318ac999a7c75a982495684956d3da. 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/GBHBR0401715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d9c38b5428ac2ab877e8a2ee913bad0ad89c82144d41eb0e701f8e67e950b4. 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/GBHBR0401716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c7bf1afbd94b0e07b7c65e4943f068c331d8f2380a0ef76e8321ef0bed0a0. 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/GBHBR0401717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cf3998f260fe38b915b01d804679b8d257b46a8bc625cbaf4827c3bf2e7c07. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBHBR0401718.
War Time Songs of 1914 (Pt 1) - 1920s Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f3ab25bd0231d53a2b8fe9193cfda7d2b563199674cd672fa2d94a5fd0e997. 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/GBHBR0401719.
War Time Songs of 1914 (Pt 2) - 1920s Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c5a272022637e527a5b00a076ad10d8ebd16ef8ddf7aec7ef68dc6d9d1c2e. 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/GBHBR0401720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0720aa65a6cbfedd72a7002cbbdc7dcb324fcb504b480d88337a490dc2fa450. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBHBR0401722.
With Our Boys at the Front: On the March - 1915
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa5b2f567b02b75a51165a3dde68090560f8e31bae992ae26b7a7a2f5812f3e. 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/GBHBR0401723.
With Our Boys at the Front: In the Trenches - 1915
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b76bb5dac1d621d7047db39793394f8d8adce6be7feb674c86d66b400246a9. 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/GBHBR0401724.
In the Trenches - 1917 Descriptive Sketch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618273f6e2ef24731dd75fed99eea7c51ddf238faa4f0b662fc9526218dcaf9a. 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/GBHBR0401725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcffafc256890f4e05defb6dca25821e6ca9307e42a46bb42016020bc266e39c. 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/GBHBR0401731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb416006a414d8ceff9af4d77b6dbfc451b6e40f224fbc6ab09c4a59cdc2053d. 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/GBHBR0401732.
If You Were the Only Girl in the World - 1916
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e1d5df735cad36a811e51dd36bad5b6e7a78f1ff44742385f00bbd70f765c. 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/GBHBR0401733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b572c163f4a0c1b2857def981cff2a35d1beaecaa1ade2ad1a693089715f3. 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/GBCJG0400032.
Let's Celebrate Christmas, Vol. 4 (The Best Christmas Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eaf2b0b5e8729318774f80c2baa8772047d6b0fe1b99f29c2fa45df3bc9aae. 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/GBURZ1600959.