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 0x8fe9e59c0c54452d6552b3aed74ce7d54bb2a81a823ecda1e2d9cc9041e413e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/361f6d11-6ae4-454d-9464-1f571fe51574.json and https://artists.proofprofile.net/proofs/artist/361f6d11-6ae4-454d-9464-1f571fe51574.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 0xd93ac4d4ee0cd6c7f6b65510165c878b8a123faf41f2941ccac9c30198269ce5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRZDD0000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed411d6d8a571852829ed7f11be49fd0c9b4dcf995437d6e0310854d8820889. 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/FRZDD0000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e125aead8100d9b5a48c6664d5da246418bb8315cde34f376fc37dcbf81245. 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/FRZDD0000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a205c9d59c648c1cf18f77c4b0e88580717b4676ee452ca5ef1090822b8c21. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRZDD0000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c68fe7091cb65117a8269e568e65dfffadd220f572fdc85770af3d23896585d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRZDD0300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2975bda51ec05523811fcd93dcffdb469b012d6146c23836e18016025577f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:25Z), 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/FRZDD0300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c4c8c533b9c913e4552398a1b9bd02e7f33162fd554593fd28a182f87be894. 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/FRZDD0300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92dd22b9ec9965d8cb1f0a65e7a6f551450912c474e592970a01eb5bc669c61. 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/FRZDD0300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674d73afdfce4ad1ed9769cd1e68c0c7318daeeb6200fe634ccc028997541e0. 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/FRZDD0300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc672693cad05477e530bdb1f5acd8f6abc1b5306a3bed0af6262715917bea8f. 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/FRZDD0300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab1c4008494899a2e2d0d9ca703d83b6b94a67c57c3cbf7c52f2ac72abd4377. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR8W20500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74946581d2df14f9dc0661b41c1fc97898587f35dcb635720a3f102d8975ff18. 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/FR8W20800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274270bf5781e88212eea0c7623f78eba2c27487c3123132c2ae9fbe44cbb022. 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/FR8W21000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd70eaa88bc1667d83977006b229e50ce2b864a549dec31beb6a06011246c32. 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/FR8W21000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79707f858c32859bc8ec0671bf81f6c71e20802900f28f34adea34ab9f5142. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR8W21000020.
La belle ribambelle des joueurs de poubelles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84145b1c11d0681cb6ab5203b284bfafc9f9ec55dfc4228d978cfcf4d79c9cfe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR8W21200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6204bc8186882ee3af598aa20740210309da13251c59d830d6e46fd12baa49ec. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:47:39Z), 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/FR8W21200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c55b64617b7561eee339092312635f0b0886f09b418b10d49a63cbd3f50f4b. 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/FR8W21200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57055eb488b0c9eef1cde74f6e176f90b7fcf404f6268d4a8d4a3ee6bb128619. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:22:24Z), 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/FR8W21200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5016ea40f3b6130407d436fc6c1da3acbcdb3831f49a0ba2a32f2e058491fd0f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR8W21200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca885085d1815c9381b04fe2dba618977784e9b03a447310ef4a0b02739bdd2. 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/FR0U71800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9893237ab69e9de63ea97466d8595761896afed42650d44088436152329e2e32. 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/FR9W12024303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9fe91488f6b13d15b08a458f389ecd0278633d4d971cc2e466ebd265848df. 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/FR9W12024304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e14101aed2f2d0d2a8a753ec09adc4e1b0c3e0d2db76ac43fc4f39542b7d9af. 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/FR9W12024306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f37421d873b0deae1deef6217621b06b6aa2155bfe30e10b970b2fe6316485. 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/FR9W12024593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97af61de2f57a6da7f4b2370c49a5fa85640542c28860dd56627fb3bbc676527. 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/FR9W12024594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a1772065bc35967e343cec81fb4e9c78c4ac2be0d1b23237909740931cc9f1. 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/FR9W12024595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ebb6449328aafe9a3b069994aab87c68a21b8c0cb2c5cfe110ebf59339f1fd. 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/FR9W12024596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04201dee57a516a61ae388ae44f79ab3de60f8652b58e30b879ffa60549f1ac4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2PY1404350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586d02fb8f8dbc4fb3ebb07e1abdf5cf77d6d4f42d01f1b14b8b097874c3f81f. 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/FR9W12024297.
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 0x21441cc8da27fcd90cf1eab2089cb2fee62c09586597c3721919362cd83e688e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR9W12024298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9597675d20761632cd09a5c21f7c4a9c1084644b3cc13592a87e4854544f2f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR9W12024299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158b8dd53b65415dd07f6a9e73e3b42d26bb1f46b08983554c3f5ce9611cebfd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR9W12024300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f94feaf45ca0f5c36123aa71fce26746ac06150766a06d0a5c9f5f17f1756e. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/FR9W12024301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28caea2591bb1488c7002c59b7cce748644b86f4e025e3dc7e3d43cf4c08fcbe. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR9W12024305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83889e0777b1a0f668d255840572ce5c3a65dec36ef7352b2d2e16fe02e067a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR9W12024705.