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 0x03454c575f8564d379968155156226a2a36a679a474a48dde0ff07aa3fa521db. 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/d59fa8c7-a167-4598-a4c1-efb9e1dc3c45.json and https://artists.proofprofile.net/proofs/artist/d59fa8c7-a167-4598-a4c1-efb9e1dc3c45.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 0x4925f2ca4cec0b821dcd1b5699b111c3e8287fdc7ba7c71fca3d367660ba14b9. 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/QM2PV1579537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c086d657ce60cc4259adde2fa37a1763912fa54e96b4696ce86b9e83f6b5e52. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QMPKX1664816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9e4cdba989dc27142e9037880c2bf4824725adff512afe08876859535b8c9b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ4JJ1680371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb4b5052d63eff8eec5b17c0381b0101d4d0d7847ee11a35831324970a752df. 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/QZ4JJ1680373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c941e1cda63572ba2003fb931b526ea894484ca76c78252eb6e423af8bd4122. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:57:40Z), 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/QZ4JJ1680374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4cb40c14dd7194f4694448df791e00f7394121a1b4cd2af05ffbbef547a346. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZ8LD1730598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812620fd9f1640e4942086becf0b33e13e6de8f7eae5801494530f624e188951. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAPG1744356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e1d67344cc8cd2ea13936ba092380281a445d8813693a76351e9ef5351811. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZDA81889905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943b323903e903915bdd5a6154ad961098963d442669cfea6ed3e7850367e794. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZ4JJ1808981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11b9c9fc05d896fb17ac5e9c683f35fa8bf0b652aebee46c45e701df55084da. 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/QZES51903090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2527cef8d8679468418059ea0048d7b48a92c9251a8075a324376de23ca80995. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES51903091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a8a4fa60494c5d392b567ad9f53e29a0cccc97c6107fc4d957206cbb544d0b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES51903092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d9c870c77f956a5c838c25ed7eaa57b566685536fbb08953afd5e86c38a056. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:07Z), 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/QZES51903093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073b8ed0c599d7ebe09a737cbe5635b71c52c9d43aaf23e7cdba19764860ed0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES51903095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9ba523f91e9bbf5ff4319e436c75f70e5deb804c1d1282dd1d7f26a32f428. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:25:57Z), 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/QZHN72092120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da91e320816288fc80919745bf553dd84ddc0b8711a85ccc3c6166bff758f62. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:42Z), 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/QZJRB2063026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ad6634d808bd11205a5b92f192b2653029f5a7d499214be75129b9921dc7d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:43:12Z), 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/QZK6F2002439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b1c8bba6566b008fb72f76b4495a427d33d9b2cb3d5e0a20119f692f3a6219. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:19:07Z), 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/QZHN52346936.
Return of Magic Pond Frog / Of Birds and Bones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaba93cb7d94e881de76495031e1f39a22a2830120505a89ff75c074c510675. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:37Z), 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/QZZ7T2481121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70e2e2053da097d2e995eaa7bdf5f35a96481a825d7b3761f098c5cfb1e02f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7T2481122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bc2291387540d13f5387d463e220f000dd8cb203a0341c5f3e6d9d3f5dddad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB52533741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b50caaa9227a8aefb788900bbdbb4923963e17714286e10b93f8c63a7c1cfc. 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/USBEB1810035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a60163e6749966b8805e889642b7ce7f833e96f967f7f0d121a5af78cb37e. 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/QM4DW1769646.