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 0xe8fb18afde3ceec86d270f30dfc2680db38b2345c0fc869c97bc99d586ab6b72. 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/84701679-65b4-4aee-9119-3a363eefad71.json and https://artists.proofprofile.net/proofs/artist/84701679-65b4-4aee-9119-3a363eefad71.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 0xcddacbf26091e0dd4d2ad18615c50a9e9a0e474dbc10722ec4998a5baceafa9b. 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/USA2P1561986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb2930a881e59473ca5153ae5868d3e1d3c440a72f9787835a3ebf14e8a5d1. 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/USA2P1561987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e0a52bf6ee62af045e19a28498d3517fdb0a7809548256acede308d606392c. 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/USQY51760791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce6d9909ac4779b4fbd3a0cf1a68a23426ae38dbdbda78a5a0ee35b45ce359c. 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/USQY51760793.
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 0xfb4e00b8f1de206d69d43187b9a555796f7cfc531d4d290658a6f2f222d60316. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USQY51760792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9deee370371a0e3a39779122ff42d0f2559203716504dbb1f2e8b406b28eb5d. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:33:50Z), 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/USA2P1899398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737894310070923c7418ded75418be5630c098c406d53e4a72eb78401a428f0e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USA2P1899399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b6a97658c24f5a9b87754152734e199743625049dfb63642d6d68eb9eb66a. 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/USA2P1958492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82bf916dc237ab119c01a23da753e2e3683d25542acd4fa4e429948c1667017. 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/USA2P1958493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac3ed08849dced5cc72429b5b764c5c8ed873b9760a9c60dd37c65ee1a3250. 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/USA2P1958494.
Wishbone - Sumiruna & pHaSenVerScHiEbunGeN Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2bbfd9bf57d83b4961ebbb91e61a5cf8d7b7e09c6086e55f302a894409b32. 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/USA2P1958495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf9485c67d75e209293edeba34d38ee741eac9ec5ae7f6b9218f02c1d364868. 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/USA2P1958496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e52232ff0f679f60027cccd97a10cdf28df3bbcb902377fed78e9fba8f970. 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/USA2P1958497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a42bb32ec7d55a7d020bee14766673dec7e0f203fa6db4045c922e44e64668. 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/USA2P1958498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b645f275e46c37d7f641887bfb56fb1986d210b3df7287edbc4e2b0f7884591. 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/USA2P1958499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbbd737c641c94fb8d8a53217b54ee73db3c36bf2971c0a656b177c21092085. 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/USA2P2128563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c9db891a41e96d209ab7a4263256ebe52745654b94ffe7414f782f73d565b. 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/USA2P2128562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b414e32eadffddeef6aca45aeec8cf032a50affd103c9ed78c64995a0db5145. 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/USA2P2128565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae64d7a91d300a56f440a9aa22eaa3608eba9781e1cbac8cbecf4167cfec9de. 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/USA2P2128564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f84145ff894515ada19dd3c15d313242f11160b0936bad6e698c0f3cc5cd9a. 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/USA2P2025259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8fefa0734a57e2792b1f9db6e6d0cc9bccceaff4ac063ad0bcf0adaf2a01a. 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/USA2P2136354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef51eb96828ba727ba172fa1b6044247d6e6843947ea46f2c7a16d35a5be2f. 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/USA2P2136360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f00f3dea44fc977e7169ff77b304edb18cab62d9951f521ef7a37262d5031. 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/QZ5FN1794196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e601f36fa784f575d2f0b1517331aca9fe2d99b4fc51613f0f448463276f87. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2333607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0873a538aaae3aec8f70daaa284c72e6bb6fb690183483f431a6f77cdf0281e. 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/AUXN21425284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2b58e417de6c1e716feedd16e3811a24598a0f5084b512d95d19d5fc0ae26b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USQY51796124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145b32ae4f47cbbe4cfa5dccde11b3b5fe1ac59b2f2c108ce71f1628cbf99f22. 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/USQY51712578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a16a173f614b7442ae48c9a2a731b14ef939c1750a1edd9dac3c587bb907a7. 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/AUXN21605505.