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 0xe913e94f6607f112d8caa6435a9c43e210b6c7965326c230ba0eb2f31dfeb0fc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bb3d6a1-23bb-4b17-b52d-76da6e494c4e.json and https://artists.proofprofile.net/proofs/artist/8bb3d6a1-23bb-4b17-b52d-76da6e494c4e.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 0x57bdffc9ec576331c6bbe0c01b0cfe6fae5e7c09c39a31557ccff73db35e178c. 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/QZW9K2337543.
Solo Quédate en Silencio - (Versión Salsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe46d6aabe3b25028b233462a095eb2cb4d4463f59e6c972f7368c9762d301d. 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/QZW9K2337544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2f43d8dd2f47a5c6cf3b82cf6d6a102add34becd38adb3497452e18276ad53. 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/QZW9K2337545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355439a595fa2d7b52d4a9121a0a278ef057a9732ddb6becdd9bb7d2d3f6f959. 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/QZW9K2337546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9a2f91cae3dc5f69560a683819d93cfdd10b133ba9cd124d22e3599200197. 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/QZW9K2337547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c90712b470e4576b3aba0083e72ed3d41e675a8c84507d29957c49c179002. 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/QZW9K2337548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aea111e894c6639946449e7a9fdc7382742ac18eca259ca02105ab27c4c207. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9K2337550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1f232d4e4f08301367425234e0cc2a63941a05c80a1dac7f0a269435326cd. 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/QZW9K2337551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bb3550b90ce1e37eaaa5d15e2c69b9a0a8887c43e6f62352b2d77cd0326aa. 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/QZTB22428957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63b18aff33c39c3bd83e05a09d1d58afc8c66786cd05f43947fbdddc21b6a3e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMER2433117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab2a16391d5b789a5a2195a489ca835045575371119f91536d4b9d2d77fd44c. 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/QZDA82458283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb473abd3baaac4a8af5005aecd7eca2b2151ce0be1c22ad002b78dde12ab809e. 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/QZWFE2396062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346471edcfd7dd0a298aa6fa4cb23afad034389536d6a07c233960803b54b4c2. 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/QZNJV2358822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ddef583120891c42476f8917c1235d03182d335f1b6e4457c5ef6243675c3. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QMFME2262157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c31d0084bf5114ef1842552bab1629b188b46249d207fde784dea91e0ea1ed0. 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/QMBZ92270977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80085aa08cda7d27159e3e095734caec5dc04408478adee856d40b3a06ab77fa. 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/QZFZ72303749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655eb709a7c69e0674bde57fb289e9f6cfff1599092fbf2a03d54620d1169348. 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/QZTAY2243655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f15b2b2429ff3f8aadc4bbbb3e81c5b61ca442ac42224cf9921c0e057a66d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92261017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e4da9662ebea24d866320b8910586502c3c62e3ac5e6ac711fa7f249e79fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22108757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4be2b947a61b07b53385c619b120153f2b67bfecd2deb931a0af8ec9262566. 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/QM4TW2060024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9451b1a2a05b8cbfbd9435c5534fbd5ecc4524d21ae0d6ad784fcf6d98b855. 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/QMBZ92270962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c31d0084bf5114ef1842552bab1629b188b46249d207fde784dea91e0ea1ed0. 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/QMBZ92270977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3b7db00f46692288607181e2ad515fc0bff6783e61d9ba747b4f7ab5e1313f. 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/QZWFX2410027.