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 0xb35b061598157ff2370f5af1b3969fd760f17f32509639465a04db94e82c30be. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e77ca1c-4e1d-4705-82ff-0f5d3c0baa39.json and https://artists.proofprofile.net/proofs/artist/5e77ca1c-4e1d-4705-82ff-0f5d3c0baa39.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 0xc90c0e4644438b40854a8f617c283cb74808bc8e7f8e1d82afe426c031c0f9b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBF076140104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6804735a8922771dde5848fe22eb9cf1a6eda79bf1c4710eba900bd242a43c. 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/GBF076140111.
The Gondoliers: In enterprise of martial kind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c18746a3254d8bc474f8667f44c9e5b42a97cee74b418fd9603d4bc43f3ac90. 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/GBF076140112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9cab4b29bc63a3ef175938b6e02f9845db928e2c5b10a5cdde1156820e8664. 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/GBF076140119.
40. Small titles and orders for mayors and recorders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a07b6da88eb054b38e3010d6b9b4e0368219c026a1b81b17a8df559ff1c38c1. 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/GBF076140141.
Gilbert & Sullivan: The Sorcerer / The Zoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb46f6db7ade836b298c6774580a961b073e9945781db015315533c8c8c2100. 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/GBF076641501.
The Sorcerer / Act 1: 3. When he is here, I sigh with pleasure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17abdddceae4f4afecb15ea89aadc2152751a4cb017426b914ac9507d1e1603. 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/GBF076641504.
The Sorcerer / Act 2: 23. Oh, my voice is sad and low
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0cbc066fc300e6eef5f8a3968f79362f2fb6398fe94949c55ab48b04e7fdd3. 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/GBF076641524.
The Sorcerer / Act 1: 7. With heart and voice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7a126b2aa12c065ce85d3a44ee7b60f60ad5118f7f6485e841eaafb973bfa0. 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/GBF076641508.
The Sorcerer / Act 1: 8. My kindly friends...Oh, happy young heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950bf9589cbae4483966ad341dbad5e2c390fe20010e644683a02cde17787d17. 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/GBF076641509.
The Sorcerer / Act 2: 26. Or he or I must die
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89fc69230119982942114e0e13e702dc7b6d5cce97a5f2a9e3e621c1cce2b3c. 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/GBF076641527.
The Sorcerer / Act 1: My name is John Wellington Wells
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3622ef8aa9f2dce415cf55e9e9335d8b76d8b1b49d29838233ca6805d3bf0948. 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/GBF076641515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7a344eaf7fb13d0f74093b67744ade7c7368e8bd9c0105bee317e1db5b83dc. 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/GBF077743005.
The Sorcerer / Act 1: 15. Sprites of earth and air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e71930554021c403b67d6c45790350e0a86c68ed7e148f68b941df25d5dd73. 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/GBF076641516.
The Zoo: Once more the face I loved so well
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55457d653689755b7352b9aea26a9014de42c91edd34fbf4174d417f7db5ada. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBF077743006.
The Sorcerer / Act 2: 18. Dear friends, take pity on my lot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf231e7d3b588401b6ff04f52999214550f0c4b8db04004e4727d20f78d0e99. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF076641519.
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
The Sorcerer / Act 1: 16. Now to the banquet we press
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf880fe4b97e8345b4cb98bcda25ae5ccb9ed957514710cad2ac95dd581313ed4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBF076641517.
Vaughan Williams: The Pilgrim's Progress - Bantock: 2 Choruses from The Pilgrim's Progress
Gilbert and Sullivan: Patience - H.M.S. Pinafore
Ruddigore or The Witch's Curse: Overture
Orchestra of the Royal Opera House, Covent Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a02df9b6bca8ddc575a184b0c459db2e9cc0564803542fdba953b7a6e943df9. 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/GBF076241101.
Chorus of the Royal Opera House, Covent Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f24b14b3ba84270887b582a8d0b031d8d0d757dc7ea39ff05439ca169b35fd. 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/GBF076241102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d080b4b59d2e0fea4598970431deb46bc00e919603db573a07fb0cd50990e64. 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/GBF076241119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70b80bffecd8e3f8533256086f9bd3d6b605c1773d0b52ae5918022b8a46ede. 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/GBF076241104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd820b56712157ea8e5be2d92772bde7ad67b7cf716dc1fcbd1e6f33a498489a9. 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/GBF076241120.
5. From the briny sea...I shipp'd, d'ye see
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3927067c4ec697016c890ed69f988629cc1695578065fe2a10acb7ee6d8597. 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/GBF076241106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eef6a39a2259b1bc7a82e8cbdbc0154909bb01b59989f390957d34e85f8545. 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/GBF076241123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996946ccd188a52669ca24ec0398bd6a23df341b1ed59b336352b8555888a3eb. 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/GBF076241108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1914747f85ec10f4ab2b09c0718758267665a59d29100c779815b30c2fb83b2. 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/GBF076241124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b669ccc64b97691a04df9cc17a31a49811f6946d2517a330532d5b4a490d813. 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/GBF076241110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49e3bfa483fb3b50a025b98a388d8b4ef4f1b468d70f71c6a2dbb2d8d4a9af. 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/GBF076241114.
16. I once was as meek as a newborn lamb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe652abe3d546b46e4546d625b8a61f037109e7c0415d9c37c8bc0f74e64cb207. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBF076241118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0280aa3f589e4106651a565b7ced88fb535974b53e061df6647a06c6b289d84. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBF076241115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6b90500324db6547b042d85882fcac0e8a09bb530bd0bda1bcccb86ad25dc. 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/GBF076241116.
English Traditional Songs, Vol. 2 (feat. Jean Allain and His Orchestra) [Mono Version]