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 0x0b0c4f421f13119298efbeab5943339307b3a6df648dfb4381ef39eda6ec840b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c486518b-ed67-415f-a028-67a2eb13367b.json and https://artists.proofprofile.net/proofs/artist/c486518b-ed67-415f-a028-67a2eb13367b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Motorway: Production Music of the 1960s
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 0x4f4cee45f5571e3bc5d2e1d86a413b286d1595ff9f5acaf3c1d884be7631cbb4. 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/CH6631552602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9dad88d08b38b51b406aba58318bdc8538b733310b789161a1a9f99f07b9a. 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/CH6631552605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d74ca976ac07963b5ba5b1fa20a2203202a959416577f01d09050da8e10c7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH6631552606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9147201d83c71717dc7a5300dac9566317fbf052a1c5fbb4390188f25e01e6c4. 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/CH6631552607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44df0dcdabd2dbba088d808b193a57ad4f8ff44738a7c8927615f0863d385e3. 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/CH6631552609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1951eea4ba420f4aaeb50e4397e5a7f38f0146585cb445059881793f1f46eac0. 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/CH6631552613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897ac710631c4ad8542588d1b9cb42514376fffa51bd2ed9e4a9f12a8014f23. 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/CH6631552614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8756a63cc95f10299ef351026815ab13897f2fd309f0f2f3368d1f4f427b9c59. 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/CH6631552619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535c89c50fcb76f92acd45a4db7828dbda34829180511df3ba646b5e992259d. 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/CH6631552620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda750bca6e99c79369fe6cb4eaaa641d6c3ca50c292585eb6f72ae5ce87eab52. 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/CH6631552623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad8560e2fb5510409a06d8f5f187f8af16ec83743184fba5bb9e22f8791d0f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:35Z), 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/CH6631552617.
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 0x83e805c2fa55b747577291b5e0e0a2dbc1cbd0bf61eb1b3d7637d8d13148aa94. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6631552601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd000b917113450fd972eb51e4c6ec02fa88fd741882025cbd4c388f8af2dc7c6. 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/CH6631552603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed1ebb1cba8c946fa4a78c388bbe2268feeae9389d815551baf5b25271b5a16. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6631552604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e955b551729101e04dadb76e28ed954d4d9502432269548b5ec94d4c07768e. 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/CH6631552608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a48cbacbd2e939c4c7b37a4738ff9949e07178e85bd49b18a735f45bcae5f2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6631552610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a2e8b8e541bd8c6affa8eaa1c0e0f303081b7a949b4cbd54b9e1d255381da. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH6631552611.
Tales of Nature Suite (Introduction & Finale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6f2c6bc9dc8aa38d9d16bf1c7cb895b1c6459368e64fdd9815e53ec0da0b0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CH6631552612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2da6b9a435318b5843c3d20e34b748b73204b1310af05b0282de981aa9b0471. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6631552615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2b5e6e87711cacaef0d1c36387a61944a98b2ad89335f0b0d8991a147f53cd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH6631552616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917a9764010f6c31eb8a119ad4c41aa1c5caea3b3cf6c7c35d9d2279722df171. 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/CH6631552618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24b1fc7cde43a6ab08446d2b01f2563e9c9b281e5f203e1182f70a71b856091. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CH6631552624.
The Golden Age of Light Music: Table for Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f69202462c4f0604914df74f7a9e7da682a8ca3c01214105355915b9fe5426. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CH6631552701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8064e45b9ce966c211cc9d3dd6bab943a8682ed27228ece6922b46980079fe. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/CH6631552703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cba1290fb4834fa7f0c4af89f52e647398a75cd5c1c9c268ba7c32119147bb. 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/CH6631552725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f454f0851fbb681c0ed64019446ba42e156e7363892d2307f15cead4cba9eb. 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/CH6631552705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548ef7d49d145f3149d755bc19faa1e68b15f9f2ffb831549c5f1d198363cb23. 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/CH6631552707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc30d8b15b5c715f06b2d22e3757bd32f26b152d02330cd187ffa0e245f5c15. 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/CH6631552711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e040030f7953894b0b8fd2b6d1b96dbeac539c08a94f66dcfcb503de2a48a3a. 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/CH6631552714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1915727b2eed676de97e5be294312053945cdbe3eafd08275b73be0c7726fb. 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/CH6631552716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d820c88ab8b6916ea2f25e7afa1f90427752f4da5cc6fc9ca9199ac14a9350. 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/CH6631552704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e1273265b523b76845f2914861c9b3c2b79b8007ef042d622b88bdd3aa6d4. 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/CH6631552706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1597de2a8549d68fce80d1894264254b2123022d9ac40a794dfeb63116812e6a. 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/CH6631552708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c710757f28fa225ecaf44c3dbae1a231067c2f618aeada45cdfbf5e0792eb09. 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/CH6631552709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6065bba16d2c83b56e0dc65e71c1ac6cb1828ab87afa00563cc768672e90d2b9. 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/CH6631552715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5d4de003a2b68dbdb938c96aca69d69450053bfb8e8d072708fae487d96651. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH6631552702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da44753d27993629c9c0b8ee0ebe1099924f4f63785040448e88a19d91129b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH6631552712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578a19962cb62108bbac1eb38979a058e789498633f57e4df26691d3af640aa5. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/CH6631552710.