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 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 0xcc9b38b7ce948a11dbf74e2652edb3ba155e6750e52cca60c235f47452c692f8. 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/67ef4d38-d7d1-4cf2-9e4a-f996572190be.json and https://artists.proofprofile.net/proofs/artist/67ef4d38-d7d1-4cf2-9e4a-f996572190be.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 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 0x7472f2f99592169dc2f34128fd6ffc8a5132021d69a80892ea4931fe731791af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM22007275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93824db914f262167ce35d4fcbc825cbed1a81e57b6ea3ca3e8a0959487f1c2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM22007277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc794dd80f020b934270b8c0eacf3ff5ca74e1cfa624cc8957230a6082df39b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ2096746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e3489f4761b5e88a0affbedf59cb0dd9ce030888cfb99d88af5876b2164dc8. 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/USCGJ2096750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f155cfdb53ca78b9888a534f45f12656ba8763473e8298147e57edbc20717. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USCGJ2096751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e2f51ee69e653bbecf5489cdd34ee6b3a37b4f52035cbecbd07298e432db93. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USCGJ2096752.
Rap de Five Nights At Freddy's Sister Location
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf3780aa9643fb917c23439435144123353d29b88b926ee56b8543885bcc696. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGJ2096754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec46fd143ec6da1b42618af5aad919f07ebd7da52b8d6a982ec54bf6544c4c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USCGJ2096755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6052062c586336e1376297e4479efc1c1168df31bba3f3a9e5ecc84196754fbc. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USCGJ2096760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de21091aef0e2b307ec3ffca3a5afcef0cf794d4bd3427001304c0cf62cf500. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USCGJ2096761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeb6a2b6f07e97a85174363867c67c3a81e616dda3cdad4e278c1c1fea51136. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY42018416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a861934daebcd3ed7f132382d8dbd5131a11c2ae4055f8a7d03331eb24fb9d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDY42018418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7625bb3b4e226d9d5d6e07c5fc298b999994e265ede27bb3a3b83e0b1e690c5e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDY42018419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa456af1eaca2cca84bcd3da3dde53ecb4159ba845591eac6b0b99d10cdbef4d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY42018420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b93c7814857a7bc3fb42668ba008ec0890414fd2048679a286849e04517e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY42018421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c1c9fca82e0ac473f30cc598f45681e47ca9d5deef473c1c92811170213931. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USDY42018422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bec24826d76b575a7199299f7b01bb07d396c3efb04f1b848ccbc0e28f32f1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USDY42018424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7491cd0710d37a173f3f4895986e571e8582d7cbc735f3baeba35d7bcdecef61. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USDY42018425.
Combates Mortales de Rap (Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa266ba9a84b2fdc31f12632386cc2d62b504b065efebeba31ac6d52a5b70303b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USDY42056349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0199c0976183d8aeb8c6209b286fbf4545e5687f939848a813dd8a0b3147f. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USDY42056350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d04f0ebb287f6b0e12517a72357843d25281cd455eff4353c590c2e862005. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USDY42056351.
Jeff the Killer Team vs. Eyeless Jack Team Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095898c8b84e722df2230ec7d2146d89f44ff780559326129b5b034638199a5b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42056353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e086f87a8da7edf660c052815f556d2147963fdecc422a61e2c12bd5ac1f6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY42056354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a3dd4a5606ee6d5e0612c76682badea2897a26ddc283f929780678183fc96. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/USDY42056355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16ba72973503e25f96d6443844cf6614967751ed72d844d7515483bdac1c0ba. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDY42056357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fdb3201918df0ed22b3f6cc982696f2f86e2ff8c3ce932615dca6464230a89. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM82091395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676644d188792304b167ddd537777dfe776ded5e7c8f38480ed0af4eb56b8e8d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/USHM22004591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b25d9683b03de16959d4fb78ec7ef219948c84c3aae1197f82ee56c41635e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM22004596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce0c42b1171ac76f24e9e8570e628b8f7984824a18a0522421157d8843c509. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHM22004602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dae7de98b76eb9b55e54a89faee5707ef06cf24e7200f9c458b745acfbc253. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USHM22004603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ef4264a6de31e5bc7fc1597891d531103ccdbf3ef94111cb85c44f9e65c840. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USHM22004604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd601300e3d407bbf73af9269d9029c4c81e20f1348e728749f96aae67f6bb378. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2013951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0361a8f1ec49d7b1b693d5c20ae0015d64f4fbd0ecea1aaf1de8ed84a73d277b. 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/USL4R2089224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d32766b9285cc59c73ffbdaf5ee80278ce5941bd8736108a3c24707952374f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USDY42170794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a273ec9a072cd83858e3f3b0c1fb050a2353915af2c01f2c7a845df71830224. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM22165308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712492e4452a55279f216d13c9fc2e7358d861f53b2608836b838d09822c5d8a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM22196550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64414ba87f3d928e48b284cbe799217aef89fd2e364c07160d02b816d146028b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ2246166.
Five Nights At Freddy's Security Breach Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9887686d327adc3fd5b8a662b63f6ced267bd384f0af865435f6d5c2eee3d678. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42340473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65f1fc525dbb419c47356031a98b3618cc383ac4276ec9f77c4185c23340e79. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZTAZ2310786.
Creepypastas vs. Películas de Terror V5. Gold Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f37e6d6551aeef9577a126398947b5affe6ba083fb36a78788946b162a550. 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/QZWFQ2302960.