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 0xff021c72a5ad723adbfe185a0c8b5c76c6bd7b9fe61d24fa9c27d5a92f6cc2c3. 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/a0d8552f-a300-4782-b530-1cc01262b77e.json and https://artists.proofprofile.net/proofs/artist/a0d8552f-a300-4782-b530-1cc01262b77e.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 0x6997196afab37f58bf83b145c54468a86cda4912cad04e42110790b47bf23d53. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USA2P2101712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb81f3e4c3d6e12db1094621058452a75c0bf08c2ba81373f74420d211cba9. 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/USA2P2101711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87bf25034033f47a932bba98c5252b60c1954f1a8c4b1012dd67b7e1e09f5e6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:25:23Z), 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/USA2P2101709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf16aed4a89be13f4dad072bf064981675e288d3009ab5dfedea336818aaa305. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USA2P2101715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f2f1ee32e4b8032c3989748b4e65c8441a71e90deb9f7cf2dcffd2046286c. 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/USA2P2101714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41211f8693b7909e432b718b33cb1fdb48b2d91c93db8e09d792774c1954e18. 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/USA2P2140318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da594a8b73cdb412c3db9be94c8fdc77c17f41be046d0263d57dd66b60294fc. 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/USA2P2140326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc344e3aaf2d98ed488f9f87da8d5b0f79c52e9b76c42cacd7228b60299d68bde. 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/USA2P2140320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1fd288db35a608114c50b39f3638a5fd3fc0cfec7cd6fa9613a049d43bc7b0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWDE2257145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0625dd2b7715cfe6ea0764e8047000ac20b184f6b052e6bde13214a102350a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:46:18Z), 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/QZ5FN2352309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039c5b877e633b82b2504e86c885301c74c2efc3c39c78ab1b83919a75cf185d. 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/QZ5FN2352313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b11e1ba147284883a90c8c2e5d684fd4959874a33bdca0aecbb684e3eed2106. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTRX2320764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6d082da8b1a8a16c5119b25ffb8a698f8744300037477b2f0c67fee6ede948. 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/QZWDD2329410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d95563e72e94e16d1302538355d27c3fcfdd380bf4b8f3f4311c1dfd4028670. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWDD2329370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6d082da8b1a8a16c5119b25ffb8a698f8744300037477b2f0c67fee6ede948. 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/QZWDD2329410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58291862fd98af4f3d502781043e3681e908077f19f4fc92fb883e0026cae732. 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/QZWDD2329556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45bae840ea8a95e372944e91a0d632474c70df15ad81de518e55eb148a67de0. 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/QZWDD2329561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae05bbfa40f4738eca66a00970ae3a043f3ac2c49c79f96ef4ef30dcd55c6b01. 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/QZWDD2329594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215176bff2d3d4fcf6528aee29c48a5abe0dce00a52eee206aa8a34ec3172c5f. 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/QZWDD2329612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1825bee0894b85694a82e6d9acce9eee5f82697cbd23ed8442ebd947f5f1ad72. 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/QZWDD2329653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80c599780e873769e2f676bc180b81e05a0df56d241305b3d53b2764d20e90. 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/QZWDD2329666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4de1c5cccc0d3e166ac66c9e62d97fb6e327ef7b1b6d029c1d076e9d619da. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWDD2329625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf769fd136b12d6ca2c9ae8034062653d41cfae970c357f7880fbf82a15974d88. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZZ8A2472905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1ad10c0abb2823652b199f5aaf238769137b2189129cc3d4d0af4db98a6a74. 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/QZZ8B2410517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2f289811a8072dde9b3ed92d460f7d578bf55c05f6d7b2ebb84f6368b532fa. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZZ8A2472908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db2bbff0847e89f64d38ed717d296165507069b5c0cf49d3371d491534e002. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ8A2472910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf709267147a98c0de8cf0ad6c0d908b535afc2c9cfb4bf6a73ce84c0b7d44086. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:51Z), 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/QZZ8A2472918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d699ae750ad6ba9454a0c5a645d107e12aef4ff7bf345e3cc7a032c6c9045. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ8A2472920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aafcda3cfddf99298ca953679a97c2468e617a5d01bbe680ce492ce82c99ed8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:19Z), 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/QZZ8B2410510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff889991e6123178ae5f750c798d4521b6ecc0f80b1c251f3ba48e79520bc4e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ8B2410513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e039d0c02d948e31bf44d8920b1b6e1986631f396df035fc8d331b5a850415. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:42Z), 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/QZZ8B2410514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c490ce4dee66ba1766cec394d031faf35038cbf4b7d8216bbaa761859c4e59. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:21:13Z), 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/QZZ8B2410516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a546679b100c9d084bbe8644661fdd968c0eb6f1364123dfa6819a919a67a6a. 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/QM7282464974.