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 0x71bb86b3687f00fef3454895646ea601103ee14611cf1d691d4e2d2ccd77c97d. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b6cad22-c41c-48f9-ac07-7f0622433e61.json and https://artists.proofprofile.net/proofs/artist/0b6cad22-c41c-48f9-ac07-7f0622433e61.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 0xabd6b6614c3da0fc8c003e8d2448453e5ca1858c643535838085b88691d6e0bd. 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/QM2PV1727927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5bc336d44b136d72451827cba773bb73f9a2acd6bc8b411e24ece266de4f51. 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/QM2PV1727930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d9109c2c4d9a248a028d01f4a30038de3921655129386f5f43ae2b7d061735. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM2PV1727925.
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 0xf3cbb1276589799e66efe7c22715862c65394805a2e15f4b16fcf4046670ff40. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QM2PV1727926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360ab26e02a404639d2b586b0fa9939581f78941fa30966c22d26bca0120ebaf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QM2PV1727928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdfd0eb6fc1400078ceddae67ae0985695b31995700ccdda348eaf956f997a6. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QM2PV1727929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72ea511a949f2064f52cdb2bb36442a31e2a9e7ede1ead689fb0fbf336ebfed. 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/QZHN31988767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd470685139ed567b1b7482cc77711f1f798400a333d09301ee1c3b2ae440cb. 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/QZHN31988769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdb95d2734a438bb9b37e67b4fe7536d2abd7e335ddb1bbe27192acfe614c7d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHN31988771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9623fcd25612307aab217dc58829851f624d940ce1d5cb2b0c12382eeb4eb60. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZHN31988762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb5e08c1b631bf81479ebbdf0bfa107f97e7b00d5c1532e0871b490b4bd7c79. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZHN31988772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5c81c8f2cad52911e0c6a6dcec3f7eb3bf67a414d1e8558805139ba7a5c1ed. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHN32387095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f5bb407ad8ae8c0661e7924327713c9ba61ce329beafc0392de1524a894e8. 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/QZHNA2031639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d292a39392e9c28953bc255a010d21dccaab82a852b70814ff2c33cde67e9ae. 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/QZFYW2046852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98f16d26b415b59c85a304749496a8fa233acedfb6db3f4a68e6adfda00d6a8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZFYW2046851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28228dd577ee416ea1bf74d50e3cc39cac9c16788b188197cbfb17bce22410ca. 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/QZFYW2046853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913d0a800e6bf67b1f04f7edb2c5c33d66744768a5b73c1da602c6a08ac21a1b. 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/QZHN31979602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc448a5287107ce90c89eb7c5c99ab811bc5ce5d6170a0d7c7a7de8b7220692. 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/USHM91307748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760db1c78bd555fd70a68741c9795dca76b2d6a71f398f24773991beaeb7e51b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USHM91307749.
AMDG (Screwed & Chopped Hataproof Remix)
Comin' Out Swinging - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1dc1945490c3da279a3e89534863d5c2d5a4fd4e22dde70391352e4312ecd. 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/QZTAY2517684.
Wordplay - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee3539f7942e09f678bcf8d15b96865e42aac1127f00694083d14df2a1387e7. 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/QZTAY2517686.
Stompin' On Tha devil - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe09f372648b0f3cb391a5e818b9b5019d90f8d4cb22aa8996a253d74ae384b. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/QZTAY2517688.
Not The Same - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ba5ef82eddda3eae8eb6eb912207ff945f2a4e59d8f16b36cec8065cae4dd0. 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/QZTAY2517689.
Padre Nuestro - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc453a384d1da43503600f4f3468375cf19480d017466b68e8443b6e03d786561. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZTAY2517683.
Tapatio - Screwed & Chopped Hataproof Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462898efd7bd69ab1f1022600f8d1bbdbcc7ae84fccc2d03db3bba7348e818ae. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZTAY2517692.