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 0xce7e166a2f1c8b13e2d7f4baf6a75cc9f2eab478ec5aa76acc1c654653546c19. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4256551-478b-45a0-9f34-d3ea5309ea3f.json and https://artists.proofprofile.net/proofs/artist/c4256551-478b-45a0-9f34-d3ea5309ea3f.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 0x30289759f152ecaee42bc2bdf376401db71037ecc00ebbf0f74d9c93ca443a6e. 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/BRVR10900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b5316b8c57a0bcf5edf90bc7f9cf92e8814acaaadb4859a5592ae29956e63. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/BRVR10500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe488c669ba8fb9397c699d3841ec8991197ec0a945c79b95cf1d76d9c42ca7e5. 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/BRVR10600934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3eeb656444457db3f4967462484f8d06a3c4036642e5394df8e6828bc9483b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:37:58Z), 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/BRVR10600750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2ad9e68531c59076ed9f07445ebe50b22a20e3153f02ad34c75d7ce329a1ed. 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/QM4TW1835644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c79ee6815cd9c2a3ff669db43063561988dc7bf320f6f5639aee384beeb212. 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/QM4TW1835645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4561cd0cb29fac11fb1c5cc75c1773abe4fc32ff479a9db711cd74a0c5b27d21. 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/QM4TW1835646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364191d53cf3b049dc79f0eac7922e56e929f113cb1ef9ae81ff5bd9af436a51. 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/QM4TW1835648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f2f9c71ae512448b488e554540ac4ec16e681ba000a3b348cd3462386d747c. 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/QM4TW1835652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fa022d9524766d68c4f8c82c27231dad935e806a63fac63322cdf1bd1ef79a. 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/QM4TW1835654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090da8e715423602010ae004039ebec30cd8caa8d7cf8c25312cfa35ef79bc36. 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/QM4TW1835656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ced0871a6ee686468224300a3e7d9a080443ca4515c637e273214fac9b03f1. 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/QM4TW1835658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bd03cff5f6df2ff08b767f82857ed4834b0d384bb07894fdfae9fd6ea487be. 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/BRVR10700475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc524e63c37438fedeb77d78310056357686f885b6d007fc42bf7134aeff5476. 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/BRVR10700478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc5ee88accda954a0270e16c358b02b83ced70048c48279d402db0b8f29d449. 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/BRVR10700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb346ad53390da5fd7bd8efedca9761e88a0d9bd6b1ffc6d7b3c83182f5970e. 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/BRVR10700483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aaab73d4d2b6a50a8b5d195bbe13fa56483fab2923d02a98dd4dc99c582d70. 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/BRVR10700487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fbd49a8d7282fd3f1715d3ebea84b64ef898afde7245c16219c3407680426c. 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/BRVR10900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc60b625cb5ec4990ee198aa0cf5250072f7f1c571757620835b0fa3a8fdc15. 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/BRVR10900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda446809e09cb6c3b94f8a16c3aba94a4acd479faa6255bef364caff3378e58. 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/BRVR10900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57d47b19c494141aa83430789bad4b4477a59b6f91e271f693004b44aa8afc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRVR10900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a40c64bf75aa0543c793f82aca8bbb758acf890b2795f1205043b5cb6e8b3. 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/BRVR10900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0755f7394a1a8b6fcbe92d56bf7cb653acb5ad4981b272ce6cc5e30b8e17a19d. 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/BRVR10500638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4368d3ea603f1fd42dd1de27547902c7b504eb6e4a7e0bf6c8ef1591a00e80a9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRVR10500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10688409c798baf2560c36bf5eda52233a4efae9a0bee44126e8dcdc3efb1a2. 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/BRVR10500640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2b88071987eaf5cc8e1e4a6bb992992030864f6d0eb12e6324395af574a818. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BRVR10500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657c3f13eda6bbfdc648b8ddc7f1e88d481174b55089b38ae3fd842ca2557d37. 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/BRVR10500643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff1c8ab632b2b0f449f48607420ab047a98b5cba0a5512df74fb461ad9b1140. 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/BRVR10500644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fabfc10af0bc574dd05d1fe38923b0faa44027a7be6d6147e90325b6020c09. 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/BRVR10500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea3c49587b03660bb52464d233b9eaef66fe9d9e1a3fa0633e0510837313c7e. 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/BRVR10500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9859d3e4dfbade7c9f968c813cf971252094b50e43275e094ef40e0efbf0e. 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/BRVR10500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747a3eb9f72a9d346edc1a6adccb845e322ddc7ae9e442f4a3e63eb0e2af78b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRVR10500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade239020f9d56497052ea7765d42cc04a8e3e74d06f0f7f9d9d742a01093e8c. 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/USL4Q2395553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb284138cd0ad75511387a1c71dba765eeca012d5eea8791a92a56457c92d9d1a. 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/USHM82336317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b39ea9dc068f1e4768c97c7a2d6f94ddcee12de24805e01a87e7922691e7c7b. 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/USCGJ2163984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdacf5eb12e62ec4f43237506883033f01c6ae8417a1186b2355730e391066c. 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/USCGH2183018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747a3eb9f72a9d346edc1a6adccb845e322ddc7ae9e442f4a3e63eb0e2af78b. 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/BRVR10500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb16fe39cacb278c95a5b6e86667425eba500da75be069451075b3d89c1ee37. 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/BRVR10500734.