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 0xaf2122e5e8c30e8de012093983a70bcc1435b925e64dcbf59025381c4b88e2ab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c1f4dbd-856a-42e4-acce-f1831b93aeea.json and https://artists.proofprofile.net/proofs/artist/5c1f4dbd-856a-42e4-acce-f1831b93aeea.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 0x0a70d0c28d121c0401f7bfccb0c0ce7a9ba2bf4cba03676ab6a92770358cd2f7. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/DEN120400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211d0d493f5f66e2c105da4a5c9a5cbb049d22d8901f2996b21f52c4226182d3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ATK220200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf518bd8122d70a0d7ef1f849b86b710c966b03e2b11a0a19bb187342b058d500. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ATK220200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b8c3e184c48595824b066ea0865c9c2fb24123a65daf03527de537f5cc27d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATK220200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892a1115c530b671a50fcd103d7f13ded072d494f2115e9ea63be46df50676d3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEA661000085.
Böhmisches Potpourri Nr. 2 - Die Kapelle hat gewonnen, Herz Schmerz, Slavonická, Chodounská Polka, Trara, es brennt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd1ff85e9cf23c13ce0d3e1ddb20aac2bb5f25319446cea2533ee45ff8e4b0. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DEA661000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053f4b758ba8a296b00d6072186023f74a4ae599107ccdeff100f1bc9e74167. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZL450001209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72530e9d02e7562657cf941b7b47d6e22882449b43ed88f030c5ee0e0ff82c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:36Z), 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/CZL450001216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ecefe948b4c4a291cb09ed4386259d294cc158e5ed5a3b4fd9215afd2fb6ae. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:42Z), 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/CZL450101311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f961273c593c9a01781af40742da52b38d08508179e91c46716bfe0ceca2ed. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CZL459700604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac1f0bf09e593e9f55dca4b7a76f47876df387f01edf35b203eccf616f359ed. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/CZL459600406.
Es ging ein Jäger durch den Forst - Solo 2 tromp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd74ead9e28d09a9b2b97ed13c4b92fb030be6283223d57ff7438af7a8a9d0b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZL459901108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c34f9a68b2aff0c68d6112aa25667f309c73d246b3a04898a3e2f5e31779d55. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CZL459400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07422b88323dbc30c94af413ac506165321a97309222e51ec72df9cf59290f8b. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CZL450701803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfa84e657020677796be712e05288cae4d2aef4fc2b798fa766cafcad888595. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZL450101308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bb125419ea7def13fb92c230efdb2e15bd34cb8cf3acacd841acafc9089755. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CZL459800905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a932e38714f0c57448975ab2f50e124654ecec604be2a291bab9ed91af5a2aa. 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/DEEP81100680.
Das große Blasmusiktreffen - Instrumental - 40 Superhits der Blasmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcc7faebae02b2ed18aafa04b97144b055f4d038833ab73b9fee809fc096892. 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/ATT251907510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa638658608732157a66f2c509686dbec7f26d6240e8a0003c43e00813b46dc94. 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/DESJ20700095.
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