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 0xdae7902572063e6b85ad91cf1b9f4231cc6fff570e3ff922b50096bd50c9d132. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2b7e197-bc81-4ea6-81d9-71f65fd6960d.json and https://artists.proofprofile.net/proofs/artist/c2b7e197-bc81-4ea6-81d9-71f65fd6960d.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 0xcdeab1912d04190a654d8966d1187181f7636beb7c0e649ac15511bfaff6e17a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DGA062070981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9395ef82979af874f9b481e2d2f4928baa04dda9543079994279c8a780307c22. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRYF50700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c454232beb08ab9634afc0551778f573a359cf2f4e373939c0f7b8e5b5522. 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/FRYF50700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04ead25f507addc3d6a45c2ad9e8b8fb799304a309b9e307a4215d29cc849ee. 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/FRYF50700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241f7da16a42d80831c73bd184517808bccccd2a8f7a0f26acc69cc044146c87. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FRYF50700050.
Suivez Minvielle if you can ! (2 directs : la vocalchimie & le tandem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497ad7582520b3012620e1ea44ff81ff30e34cac3653e61e0377f887e1a0a689. 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/FR6V82313919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d6f91e672f37a0651e1aa5d5546307d3f0dd246c6aec381a7e8446dc1d4750. 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/FR6V82313920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b096e7e6ff0917e445bff8c70a639c988fdc5a1237556c7a0f3c8b0b49f2fa3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRYFS1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4786a5d26234a3bf19db8e883975ad58b825daa58aacfd627f027667aea71cf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/FRYFS2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8a0014c8463efb39dbb7a7ba5904b612dd27558a1584512f7c697c73f901f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR7Q31900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c7a67343ac590cc2b7ae16bd07d063d7b73099259c77b187961584a9e0527. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR7Q31900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45558ab35349ffa9ba62bf46ed329631c8e6024c233053739f320c24ada35127. 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/FR7Q31900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fab71697a658c4e112eb06d2ceac53ec7687778aa1e7b4aabd6914c6478b59. 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/FR7Q31900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bcef8da386424a9552bf1001d7b2ce03b1172e2a39390eecaa7a464e50619d. 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/FR7Q31900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1caa67f3736ad9b528c46c258bd0c108fc7230051b12a8f9e06d029e0faf33. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR7Q31900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f935d213fc021668636a836dc31b175f69274f7f86c94385deca28efd1cf20. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR7Q31900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244fdade48c0fc2295d98930e7a6c53d1510d5191671b9269468cc1433804f1c. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR7Q31900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c10b6f9ad163afd91d5775eb8070f18a440b9bc1080f9b0451533af3aafdf. 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/FR7Q31900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6023741b69fe3ad3ab7d9f7c9c08daacef52383b051acbc270b42790424ffd. 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/FR7Q31900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf530d0219a5268c9c8ebc55d4374f8c7b443c817b4964dc7010cb7a0c36a0df9. 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/FRYFS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab513034e5c5cbc89ed860187f851f5e5f5974e97ac9b380847939a53fa91c5b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRYFS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504a7be49177f69f8ef282d7f84b7cda888e89b375c64836b89a44ff64b5cc31. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRYFS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a22626508cb495cb93a2224c0e047fa8609a04e43e6a03005acaad690f2103. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRYFS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae9b6e5aa503abcda08499eb94afbcd45ee4c66f7ba79d54bc4e773ea906c77. 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/FRYFS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af880662053ee9adab6abd8c2d6d571c695bfc45778f7e5fb0e9ec841ecfa45. 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/FRYFS2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fcb35881533aebebcb1c87d8ad21df79f3d99af73539d6efce5697fe095f20. 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/FRYFS2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc412023995558d4840bdcd476fbb3c068b52163b947b353e5b02164a03df618f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRYFS2400009.