1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd4bf917ed92b966971813ee8f6bf8e5ba6d7b41d0ad4f5b84dbf86d6216f8191. 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/2d94a8e1-9945-4463-aea0-4dee7af8d3ae.json and https://artists.proofprofile.net/proofs/artist/2d94a8e1-9945-4463-aea0-4dee7af8d3ae.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 → block OTSBitcoinBlock must exist at that height 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 0x91342c8fdc6dbe3ed0723234ffbeb5816ec2e8e2dac51f30232154cb01803b44. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:49Z), 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/QM6DC1602743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade06bd9b5ac97f373ace2f1a9d9368c8d804e9316efb4086806aca65853f0c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6DC1751447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246de9755028d444bd05069999d99019d996fb3aa70a5b9bc06e6ae6f4ce9bac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6DC1751448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c2df93b3e6c6657966a53ddc8c507110bf8eff61dba7959d40c5020e50903. 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/QM6DC1751449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4cf79f6fd4d789f94a0ecc4deae7e48ad2c551a06336dfc13eeded53e63107. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6DC1751454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b742d0c8629c5c22d36b395ef4d0d5c06408a4f9370908626f1cba6fc8b91a6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6DC1751455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f34ddf603d0fb4161c99356b52c02ca66ed5bdf7825a6e0868210a056fe893. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:35:45Z), 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/QM6DC1749025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764bc088102735e6af92dfa64b18eb7c6ce375f1d88e388025e23010653e485. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:53:51Z), 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/QM6DC1750684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3ab209c8c071447127d8a1f37b061933a23a49dc6f954c9fa65b246b96df05. 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/QM6DC1750688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac92a923c052d30b615a76e95fb1eff33d65857fabf32eec3dfd6af2f4bf249f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6DC1750690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cdd6c697e1d63a26cb4dcd7c0b15dc328230e171ba2823d3ccf8d1b85c6fe0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM6DC1750696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ddcc8e8b4ea1211aebae820b6920ab7969652b5301da4ef79e9de2e8903dc4. 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/QM6DC1751584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa1a97159bd484c3ef1b9a99cf06a169bbddb05ee7384ae31e8c87a2498d9f. 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/QM6DC1751588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859358edc6b94b0c2837cd38d0404b1070bb70c824d0a558cf6bfd3695d237e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QM6DC1751590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3455cfdd22c0193a35fb016f5cd0db0e09cba0169b88c0e95dba839af778d0a1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:56Z), 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/QM6DC1751600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1583cc3cf216354283bf0f06584b7c82632c75798c3345ff441fe1ba38972a14. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ51943071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b997284a71da72b071ac6043686555e873cfceb9fbe206ba7b091b70a5a35c0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHZ51943073.