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 0xade59dda812e03fb765cc392a1418416f7168e1d7ec657db622be07f6471a952. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/453fabd1-f96b-48ad-86bb-55f9f6815cdd.json and https://artists.proofprofile.net/proofs/artist/453fabd1-f96b-48ad-86bb-55f9f6815cdd.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 0x4bbd2054b7c4d702762528ba3b81c8e4ebceba0a1e6ee60096abf548d06a8c91. 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/US9930810068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6186485dd2c1f2848efe22a98b85e64a18f801e2cf827df924ffcb8b997970c. 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/US9930810071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92fb6b17e810b25a49e9ac3c2c91f2d4a1a1dd582768c5309887cad9b8ead0e. 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/US9930511839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8a82a696626ed8bbb94614ff776ce5aca7cafd7d869a7760b64222edecada. 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/US9930511842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56699f8f23b88db155704df12cb2f00ff1af1ca1bcccd8dc993091d8d5ad1dbf. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US9930511845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b68f6bab9eb4c21160864eb33ff548db6c6329688bbabdb848a44cc6ed665d. 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/US9930511847.
A Celebration of Rafael Méndez - Trumpet Fiesta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce2124920d6b161bf315c3ff794d5c5562c3dfc0a3fb704ec1ab3af67fa1137. 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/US9931200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808203d54f39f73f75e0b792a6d7f9598a06bd593462d112d625c3f022257760. 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/US9931200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f70a7b1916b1a5c42cf83a885817bb979a04b9a3fa42e8a38d77507e39a246. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US9931200089.
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 0x1ee9ac7a5002bcea899348c990b4652b020276d831f247a58697be9e943d2ee0. 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/US9931200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd616e8bbf427936b8c5ece689be98188453b1e5069184f751e3eb3cb0dd51f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US9931200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ecb8624feed2d5c21cdde099add82fda35d6c8ec78eaf9fccb5a1d734d848. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/US9931200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff948045ff9acd31bee2c1180f2689d55545c75bc2cda6131e6ff9dc4ca3012. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/US9931200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fc4b87048232b608184026fd91f0a8f17b7b38da9e925f963859b61029ee42. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US9931200084.
Masterclass Series - Baroque Trumpet Repertoire
Hope's Journey: The Music of Michael Conway Baker
Sonata for oboe and piano, op. 166 - Mvt. I: Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c77fe82d5ebb77c7e843ff329fc16f3e2059ada7d9b16edb78f2f341b0c653. 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/US9930511949.
Sonata for oboe and piano, op. 166 - Mvt. II: Ad libitum-Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd626df6a6b4c0a17ee53b79cf7049c728d75e47976b946bb98e71e5c3e2e4e63. 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/US9930511950.
In Concert with The University of Illinois Symphonic Band - The Begian Years, Vol. XVI