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 0x7b9cdd7e52e0b4095b4dcecf2c456d425a38f12e9a900f2e0c86fa708bfa1350. 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/ecfca724-886b-4500-a416-c3257b212bac.json and https://artists.proofprofile.net/proofs/artist/ecfca724-886b-4500-a416-c3257b212bac.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 0x05a6c11faf3dce3443819514a1c2f44932857517e1d7aae504194da36e0df3c7. 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/FR5R00908379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156765b545f7b40c0ec0b7f8987cf5b17656cbaf50116b02ad1f16a77a7861f. 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/FR5R00908386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143cfd757a3f59f6b827d37ad5618edc39535593e1eb13679b96a557d257664c. 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/FR5R00908388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d043e1cbffaa73b58290680787803c19b09c9b883c9abcb6dcf87f7e5ef1b1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR5R00908534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1d0e9aa55e5b339e482e48abe4d4466c886b743ac6ea8222f49fab1617cd1c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR5R00908538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6a44cd65a087d4bcde829377add272ef253728c6307af8244e2570412ecb1e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FR5R00908541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46544816f588de95508bc34f69b0428b24ef5b7a5e1655e885bc92a1a6a2c360. 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/FR5R00908542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7145585435a2d75f2c4a4febdb000f64da3554a7f78cbcd0554ebf6f312392d3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR5R00908543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e48e80830672ac4dbc7ace21521aff544c78b6893e5da8182cf937ff2ef044. 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/FR5R00908544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112c2a95a91e0a986309c2875433416a0bc6ed88ac4475ee98dedf10d891ff45. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR5R00908546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33410f61907c23b11dda1257b2448ef87146e3b65244557c2461dff878238ad2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR5R00908552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c6e2b3c5929a45ccb6f90b3910fd35822e8d498a0de524a7e4360fa6071c79. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR5R00908553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b565ab5bba096f92be1f2b8b2d7164706877e33d980c5cc33a017d6eb75d3. 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/FR5R00908554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ebd41ab2712e588d9d2e9b5ddcb42c7cb04665276dbfc85233d48895823f48. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:15Z), 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/FR5R00908555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84021ffde6848fd9e44f5186493378f26b21622d91b899fa09ad5ac3a08b8e. 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/FR5R00908556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a6e8f60a6e7c59cce0fada6a6ef6f2bb28972c87328bbff8e03dc1424fe5ac. 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/FR5R00908557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2e1b8f74dbfecc4a09be292d3cb34587cf3cda5c4c3ae8eede8d2ad44e60ef. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:50:18Z), 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/FR5R00908545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a6c11faf3dce3443819514a1c2f44932857517e1d7aae504194da36e0df3c7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR5R00908379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0881f8cf3d7d09a318aa3cb6374f12fa036301457c37b302ac06c4f4e8eedb. 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/FRX281710677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae21397e5a58b36f5ca31601f2f8d3b04c352eb2dd697d22c0edf1c7df5686. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADK1722240.
On encaisse (extrait de rap de rue, vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0979569d8c1edf5f6065271eb357158049788b9d95990bd85976913d047e738. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/FR8FB1800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41033f9e465de90ec2f191ed0cac28ce87a6172d226241ec446d3591eface4f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/FR8FB1800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df9d1fcdf9319f32aca49c384e83416ca5b6b30792baaaa8e0d697f544854e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T19:07:58Z), 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/FR8FB1800720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1b288194b647d50decc765b54c52b3d1a32a3810abe7ba5ec1ca5648fc4389. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FR8FB1800730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc376a683bfd24b67e7f1cfaae76a245e68237ca3e06e09d755ee5ef279afa5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR8FB1800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee713cd310796926d433e3edbd26636244ec05614194c69d2771a5d770c51b9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR8FB1800750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d6e08d53d6a543a04865438438a27d8e5f84b125ec9bf0c4a001ce28e8b2d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:54:45Z), 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/FR8FB1800760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ab52cd9b37f0da2e1691cfdfa002bceca782a4ae06f4966db324175b61cee9. 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/FR8FB1800770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d29c1756a9b7ab2292d5423d554c6166a8f4cdd6c43ea3b155126058a4bfd. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR8FB1800780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29453ae7ce35497b66a2a166217cc45b44561919eadafdd81fa3ebd1b26abdf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FR8FB1800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf593af0335f1e41bf0424766b04e313ff1e745b7aca65ecd76562754dce0345. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR8FB1800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572629d605bc7df4924cd9e6ff8c8dd33d1ec61753028b7c55b222908aa92e84. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:39:45Z), 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/FR8FB1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25863809b622a5374ba08c1b95f9f8ab0026a89e119a4ddb7aa17a34a554a6. 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/FR8FB1804500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202218e04efd1eb3181f689b3cfb3a415b6b76035b3c9e8c4cbb8519b0491f1a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR8FB1803000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20337fbf4fde55dcaa4b415d54ce7495047ce26b0b22135eb5fce99b3f5bfea6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRS182091359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202218e04efd1eb3181f689b3cfb3a415b6b76035b3c9e8c4cbb8519b0491f1a. 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/FR8FB1803000.