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 0xd586fef1dec9e2e5f065caae077ff435062b5f2064df72c2bf07afaba0ed9a10. 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/2041141b-7740-41e9-82da-bb4487c4dd2d.json and https://artists.proofprofile.net/proofs/artist/2041141b-7740-41e9-82da-bb4487c4dd2d.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 0x13f24f0b6501a61a9607ebcd4ce1a3087bf96485bce6bea798142a71be33458c. 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/DGA072384966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbec0ae760ff1cc7796e6e952d35598cc3071b5312d66fe74bf4b471e2148a. 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/DGA0H2325682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e770699495739f693084fe67a808e80e29b0fbc5bd3416529ee64743ae0707. 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/DGA0H2325683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a57d7a240aaa67566e7e3abf9b5c93ec85abad8b14de194b178fca6f3c43fd8. 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/DGA0H2325684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39427f3da9213bd6b8ec3dc21d683b653145a74f4db2fb55de5baf3444810703. 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/DGA0H2325685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f8116696f030f79ec17c8fa925d6c1120f63698f35774e85c04ac094a766f. 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/QZS632307448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a8c32893885cf6affbabc0afbbb9ebba4342eaa185eae1cd68baa07d4e07f. 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/USA2P2439618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3572a892b74c28d17c32f39250c36135b3bc0169da3294aa0ac708c238d9c3. 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/USA2P2430758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c3fb5f1aaa6b6b8f4e4b29b852912decab8bcebd7284021818daa575e7709. 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/GB8KE2308022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4bbc882fe633e162af328cfe8c9f19c408642a565235afdd1236c8e84bbd31. 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/GB8KE2308023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9246422ffaa13aaac816805bc7970e1a5ccd005ea92c3fd3b60e0f6b7a3f6. 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/US25X2302048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c94c45bb025d31d7d8753fa2ce7e8f3ac50b3aabf935e67daa24d1658bdcc. 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/US25X2302049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c9d4a957671c4531f829a4940d50e883763167f08bb76afcc946c229b066e1. 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/US39N2302527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731091038335e6e821c59a2ce02875848e279047e068f8ab501932a76a1353c. 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/US39N2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1afd2de42729288387434fa7a1691a9d3ec3751c22a2f23123f8ffd47b7933. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:31Z), 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/UKN6K2200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283372614442b5cea4366e4d013e70a486681fa9161169ebb82e1d8e5afc0faf. 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/UKN6K2200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7930174fbcd4bdfdd4eb79a0b7c38b0e35c67a2c0ceb0e2dec72d752ff09a. 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/US25X2200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa785749d97d2a3c5c0ddc5ee6877bb8d45d8a5766f3fe13768fedc3b33861223. 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/UKN6K2100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb92bec8aa660939540342dc2fa3df27cd1fcde7f1c6145b1305cb740edda855. 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/UKN6K2003467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b5374a02b076529270d488fdc39bcea9544ab34c7af63a0be678207fc92a43. 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/GX3Q92037435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a8839d695f2124b2614f5ff2568bc9dd1ee15584b3c62268c4d16886ececb2. 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/GBKQU2139770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536cf9b965a45742dc11ec15ebf5e00cabe31cad4d4ead0cdf264378a9c56fa2. 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/GBKQU2139771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7313ddee015c74c6a0445f5734ff36f96ef48375ac1ee4a4fec730757f8234. 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/GBKQU2139772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c1a84a90118ad247868319c41e3363b1c035ce56b73b709610361061316e7c. 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/UKN6K2001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f01bc7ef34860df396811308733b2c53cf53f5a21b5d6c1cb1b600de5c8024. 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/UKW3Z2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b2e93bbdf4556d26d6e8412e2dd75511c2dc1aa90c64ee39eb7de49190abc3. 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/UKN6K2000661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fff3ade0eca016110ba390bb13bb0998d63a76eff3f23782a576c7c04cf5b34. 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/UKN6K2000662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768c5c218d0b6ecb42cf3862217d980f84b8e5ad8e1f8594d1716efe92c58941. 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/UKN6K2000663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8bde955bb67fd9e2949f9804b186577c393f8ee1e49c93e2a5bb49fc74427d. 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/GBLFP1941552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0cf15e5bfaeadfd19b5db487d6fb99d4afab948c787cda3c7a9403a7007e0e. 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/GBLFP1941635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1eb724a4fadadc6c8fccb5badae350ed3446487b683b7164a61f6486a2b177. 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/GBLFP1941659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e60b571bca9b7a2e2fe07d43010bab7ce8bb036ceee8292a1809f45a56d64. 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/GBMA21877681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02094cf6891dae65e0ed8f90f4a9be76ba4325496342a010e604f6f508b7a273. 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/USA2P2509989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd004c1a012ccd13cfb8faa0158fcde99656e737401a291bcf0fb1189b899ace1. 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/USA2P2509988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc6f65557c2bbcfda348859dc350e5958c5175c08133eab22be600580c90b09. 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/USA2P2509341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2056f94198627ebdad316168fad1a6fe86198bddfa8df3858ffa2a92aaac5752. 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/FRIDO2416526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b2e93bbdf4556d26d6e8412e2dd75511c2dc1aa90c64ee39eb7de49190abc3. 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/UKN6K2000661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc7930174fbcd4bdfdd4eb79a0b7c38b0e35c67a2c0ceb0e2dec72d752ff09a. 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/US25X2200645.
Sunrise Bang Ur Head Against Tha Wall (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d004894cd4d99235a36f61209429bbcddaf9620edff27ef3e6b3ddebdbbe21. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUM72304209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731091038335e6e821c59a2ce02875848e279047e068f8ab501932a76a1353c. 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/US39N2300057.