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 0xeb9e6d152fc1d5bbff7698cc2f468ed14a67716a096cec278a24a21588990426. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28add307-3574-45c3-b1db-ffa3f1e34246.json and https://artists.proofprofile.net/proofs/artist/28add307-3574-45c3-b1db-ffa3f1e34246.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 0x9ae039d3c109876b4cc195c0fbb696ac5f914f97d66ade4bef18024033f5dcb7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA4N0305661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29beb6fd166589b9a444ea35b553d063a8bb127ef2a88b0616909ce13b62003. 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/USA4N0305672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca67706052213c19305c022fea41fb1980b2db54371efb5f33ca9a21351bbea. 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/USA4N0305674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c7a29ef8b121b2c1d7e9ce9a5988aa662574e87a2427d39ab925853d8045b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA4N0305676.
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 0x4f4ce311bab10db81b8c67c0947257de4b09bd88b26b810ed534320c9d0d06eb. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USA4N0305668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436ff683dde9a8515965abfe1f4ecbd25f0a8add53d23188083ccfc1966422a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA4N1200467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ec0272890390ec482045b14f504559ab541a92255c8224a8d5fb9a649e2ea8. 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/USA4N1301842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380785019b4174344beca3c6e2e977503abccd608c27b7cd056bdb175968a0b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA4N1301807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18af961713ab2c6d7468bffb99ea845f291100f7091fa26b3336123591bfff7. 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/USA4N1301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90b9c4604e97e4dd92f0480033f121ef20431ffe126901075d9fc2b58025088. 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/USA4N1301850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588b41807efb48ef827cf95f5755d5cb153c1acfb6101685cf9af94d743c9db0. 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/USA4N1301811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e873629e6455d23cb2f17727bca4b785d30cf08d05212bbaea1ac4825cd5f5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA4N1303767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659ee0f571376383b1f11e6a4a55d7ae41e4841508d448477f209fbc74c4afd7. 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/USA4N1301768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c792daf614d5c2b12cf79bab1a3588286ea0ea98e3332314004fc5b3d70c3f3. 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/USA4N1301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a715f9ad70b60cee846ae261844a8562c6bcaf1ad7c0e849d6f1e39cfd83d3. 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/USA4N1200972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf03e6aa10dd3ea3f44b9af029f82a5da918031d2712420bb95cb4e42e37f8cc. 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/USA4N1301825.
Alleluia! Give the Glory - Mass of Glory
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75a9966596c69908f289cb2fb4dba33649507c74357b2b5fba58321263b8fbf. 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/USA4N1301323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880ba5ef99f815c11fc5d6fd160097dca55e5a5e087ca33a8b4ddafd5fa6caa7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USA4N1301813.
Salmo 129: Del Señor Viene la Misericordia/Psalm 130: With The Lord There Is Fullness Of Redemption
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50936c696252cf6c9a685dff85172464ca2cda780111f58b65800bd16ccf155. 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/USA4N1201015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b8f37aed0ffe0454a465eb20cb0ec5bf79ae23c9ed2247bb0c69eee037b9b. 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/USA4N1301548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4abfed0d943b1443eb067e7a020ea5f8dcf1e7a2b46d6a91dfc82788d920fd. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA4N1301851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5ba1728c37ac73ed1c96835049e9720b8fe75012e873757b1a5e90a289e184. 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/USA4N1301859.
Psalm 19: Your Words, Lord, Are Spirit and Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4606fba87ebc76101b7915bff6b1870daa0a3bca8149d93fff244fa3a1ac19. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USA4N1301068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9a9a22c6caa1407b68b7c99668c6f7ef5117774fcb44a42f2d42d6c96f29d6. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USA4N0304581.