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 0x5e2ead84b4f8b4eb8b2ea734e146cad6220790e1a9c330e8b6201bdbc8b7b979. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09520bf9-5470-4344-a332-53d1b5173fb0.json and https://artists.proofprofile.net/proofs/artist/09520bf9-5470-4344-a332-53d1b5173fb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Fiddler's Tale: Part 1. Narrator: "It always starts..."
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 0x2d03278972c5dddeb96d0dddeb972599da3175b40749e57678a1d7bf2ef42dee. 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/USSM19900613.
All Rise: Movement 9: El 'Gran' Baile de la Reina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c49e7c152c9bf7a1f9a95ec9429bc833a1171ed5d9f2b45eae1f407f4c76ebb. 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/USSM10210289.
All Rise: Movement 6: Cried, Shouted, Then Sung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f672d17534b07f45ecee3fc07f53d0e66ce82871da6d85ae5e7a47771a557ef. 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/USSM10210286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1e7b8c2e99c02d14ee26a07c72b46cf0f5af698bc3094d5cfca31b9663535f. 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/USSM10210287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fd921e3653060389c7451e7d2d0f6474056177cf076153bc0b397544cff642. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USSM10210281.
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
All Rise: Movement 2: A Hundred and a Hundred, a Hundred and Twelve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e03924c6923c9a6ce8d09f4dd2f5cb99ab04d6b61826df88b7be2cf32bca1d. 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/USSM10210282.
All Rise: Movement 3: Go Slow (But Don't Stop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059f63e87a65baac592b1283690ca175df9f9995d308521f22c90dcc543e1bb. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USSM10210283.
All Rise: Movement 4: Wild Strumming of Fiddle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936fedec35962655bd0afed3344e40f3998982f5edf0d93171b8fd9a9e4bcb4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USSM10210284.
All Rise: Movement 12: I Am (Don't You Run From Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b349059c6209f83e51860cbcd1386e6cf0688de9f581fab0e67b6b9139dbfd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USSM10210292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d55336c2c1f22da9f42a981827cde14d375327268d0465f62d7cbffadbefa5. 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/USSM10210285.
42 Treasured Favorites from the African American Heritage Hymnal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e67e914515b4581fcc4f7b1543fb7edc369d80cafe01ea19feacf4e235405c. 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/US7851010590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b959913a96e81f9ca385302c80f5972024bd25a082297161591607b01d2d193. 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/US7851010575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f900a02ab037a227ddfcba70ba5cb8fcc24beeed2dbaa2fc9ca56a862e8e093. 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/US7851010579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f596fac02f98cf4c5c9ab4d1ba258de3d32e88fc3aee95235f12704f4731fe3. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/US7851010562.
How Excellent Is Thy Name: 15 Selections from the African American Church Music Series
Bernstein: Marin Alsop's Complete Naxos Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e50366d59fb2dbaf8d2f32a131377dab7a2203eace91e401ff7fbec8b489409. 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/QZK7P2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8a945306d408368fcf328cf4bd9d123d27a37a826e5be75ffac41edc3fdf06. 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/QZK7P2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d292b849c1b7676e388303aa67e8209a9428da6fbd747ad9bbec8c23ed04c5b. 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/QZK7P2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60907c259424a791737a99b6afe71bba39a98b625c3c0e70068b89a9e01c0269. 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/QZK7P2300011.
An American in Paris (Version for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3f8ab5a86d0278db252691f6892134c67bf2032a7d7b2b544db7b607f1d5d8. 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/NLE420300701.
Oh, Kay!: Someone to watch over me (Version for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f55e34e1f347c6ad1dddcd96b4d5021f221830194f5da61b948133dd5b18e99. 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/NLE420300711.
Proms 2012 - Music from the 2012 Proms Season
Fantasia on British Sea Songs (excerpts): VII. Rule Britannia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a6865fd45114c7845a7f0b0ae5d2e4364c5de05c0b222c151d61be7f8b01ca. 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/HKI199718010.
Philip Glass: The Civil Wars: A Tree Is Best Measured When It Is Down, ACT V - The Rome Section
Dennis Russell Davies, Sondra Radvanovsky
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c20768ba2fc31b521b1eac6a5fce74430f4494a83fd4ad8040f0f5a863232e. 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/USNO19948701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5f1b36bbf6526cdeaa3adff9e70dcb348c18fd3fed1b6e4f9aea5a09dfae5d. 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/USNO19948702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3478cec22b8ea19533dbedfd69cadfac4432e68ad36ece8e32af43b7b23f30dc. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USNO19948703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e3ef54ed06dd8eafe8dd2f495cc9cc3c108f046a45b102c565559d68ff95e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USNO19948704.
49 Hidden Treasures from the African American Heritage Hymnal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e7f3df6f3415ca61b876c1722ee621593a0b2a8b91cef5f3657027cfc19034. 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/HKI190927313.
Proms 2012: Music from the 2012 Proms Season