Coffy is a 1973 American blaxploitation action film written and directed by Jack Hill. The story is about a black female vigilante played by Pam Grier who seeks violent revenge against a heroin dealer
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 0x0e6fb538d352ff88ca9842c95762bd03ba33764427938b9e80789024684088e5. 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/c34a0ad0-61f7-412b-8770-5c95c893aed3.json and https://artists.proofprofile.net/proofs/artist/c34a0ad0-61f7-412b-8770-5c95c893aed3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
僕にしかうたえない歌 君にしか鳴らせない音
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 0xdfb084ad2ae055b81f71cada00b25034da0e54347d5fe9befb49dd3719fc29f0. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/JPW462449931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6c4f4859b58dd68c83064cb392a39481607ce3ea2b77786c37570470e3c3b. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPW462451748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a54adb28e18455b8e552a0901379ecd7089b9400a71521e8d188236b22a91cd. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/JPW462457284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea9380b6903aa222fdba49b33af81392d52de37ef25257cbcab08b7edfed16. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPW462458081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad8c56620e6acf01ced677824c03798265353bea6569bfe01ebf25e1c909cb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPW462458082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070985896d76272b6b185557c75a59cb161ea5aac0303dd512d34fb4eb26262. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPW462463681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f64750e5b53d16a7a6fbb938bfeefec47e68e9eb7f20cec588fe6963131bb. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/JPW462461208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c337517645f5421988745f123c0b124f195606e61f83413fe2e15f077af6f. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/JPW462465578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce390419a4e55d8fa779566aab36eb7d61c7f9cfeb3114888bfe3c679862952c. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/JPW462473540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e847dfe89800d1cf3bd252a47f849e5fb6fb38d3631c8b03046ef4a089a1d8. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/JPW462473556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d75bd9cc2235c24ae20a2fa5bc7ad3b64da970df9babfbef7e5a39c347dde2. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/JPW462504412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd70987f5b89eee69f2015b1d9c86bce735332cee76fcdb55b6ed9ebcc7022fe. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPW462532208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a8ca2714c75540b7ccbcce53a4b9525ef541786049e074d095d41814aa3a3d. 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/JPW462532210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979f6ffeb5f1ee050983b75125c588932ef1917234d79d9b941a195f27cf3f13. 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/JPW462532212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaaa310c8d0772709a025372c5d1396f98ee6f92579a52d147f88551594dfc3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPW462532214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d010d2c34e687994e318e0b118c5e74744771455897d903dd9068c1a2c865. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPW462532217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8a08d7327e653007ae8de25f357a3177604656c85698ba4f96f34ebabf6ab7. 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/JPW462532222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc3970f248be99da4636d3e0164fba484e42c87db19600f3e1fc3872d8ca357. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPW462532223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c42d0fee302d26511dbbb7d717604a9fc73f9c98d81cff291166ebaf74b768. 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/JPW462532224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d265cf9781d0c23a47d3ce02b2eb2254661b5d4316d6f7163b28363e060b0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPW462532225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fc330f16e308ac35e30d6a7d09da5f42556c72b269f386e9dd5a2a995dd4df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPW462545560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d21268e9386929537de04d081825a1b00ae323001691fa46f467943b67143. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPW462545561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87205767bd356a068c3a3545ca1fd19b83a18b9187d6d8ad5aaa641f5436a64. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPW462545562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6067c71a3709a0d2fdd2bf595e20b5563addb15f67938c910d842ee6fda72432. 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/JPW462545568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb6b48fbdda1ded129e38e777b03a0e5ef8963e32ceeb7cf725d94663049abe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPW462545569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73958d3fbbeda4eeeb8c79bc05cb8a47cd695f5bd707321a3eebff8d5b8c33ee. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPW462545573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62210b034536971bf7ea2535b1a0475fc3ea1fd8e3d0195993f4908b8daf080. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPW462560085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b522681ae5e405091bafdf8047072e197e63d87f54ac4ea4de13dac9676d8. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPW462560087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe7b755013c01910a98436608155d8819f5e1c000f1e0fede04f787839cccc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/JPW462560088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eb2b88b2c4633de41836f8be14edcea9f960f4823f09f884cc2b88c5a6c51e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JPW462560089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bd991871504115985d0a5f223263ca364aaecd44b0ff33995d47b5837aa260. 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/JPW462560090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b71a5e2f3ef02ad38e89170b39d00d575c5117e763569db84ea37b73c826726. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/JPW462560091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32de719ef609a94de76b7abad3146c7c234ea1f2c64d71b87821d020dff49e6d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPW462560093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2d7ac20a8d41d2a2ca9510b3b45a0cbe11def5d49858976381a086e1d41fe. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPW462560094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f340315bc9e7390fcbcf9177131e31bf1661acd9cae179429435ca2d685b3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPW462560100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd666a14fa3daf5517747b7c1189e5be618c4ea31cd392e1d6a2085495b30b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPW462560101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ae63481cfaf652b220bf038e7e092f1393c8c1ee6d013837543600e0214e00. 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/JPW462560103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bf623ca9ef399a619f16758844541d357c3be1b3647d9566ca8d589b060787. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPW462560104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820722e70e79d375828706bd46acba9ac5267d7f49edf9d4cff50565c18fdfb. 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/JPW462585303.