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 0xe7f6c3cba90d346d79c8a02a4d07ce0c773a1892dcb7b3dd96e99918e34a9cee. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/632eec17-b694-4a3c-8c7d-1c6c81cc011b.json and https://artists.proofprofile.net/proofs/artist/632eec17-b694-4a3c-8c7d-1c6c81cc011b.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 0x65f3704bbcacef2f8ad11925718d1b84d0a98a1a057c6f0002be6c2d087d4efb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJN2509398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118a14e85194ec24dcb5f843093f0178bd6a57381fbe9e9ef27d44071dccb616. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAJO2509403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfe3dbdbed917e7f25da72ce366f637a3bf42ac359f372805f9a13afb26c94a. 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/TCAJN2509407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d1298c511116f0fed198ffdf64f5582452cf3f066f3a1aa2b0809b34e6593. 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/TCAJN2509410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7141e6d4ea733c2427f117d86afa7206fede7ee2787191d6ae45a455ad0693. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJN2509417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ed26548f08d613704bfa57c1657ff9145a0c6b800f5829101ccb55b36af9b4. 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/TCAJN2509418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeee574b980581bd59ad67df98cdd4b51d4fcd7569e307b69b5acdee4953e47. 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/TCAJN2509421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8235b018ff2b6a176de77e2d9cebdb5f38a869dfec7edd1e25919b16dfd0bebb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJN2509423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0e64a955d15256554c3f4ea2de0d548501089c02c61b4e34c68c499ab33f6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:17:11Z), 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/TCAJO2509428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf81923e4715365bb1d9ad9f5c5d88e4bdf9e328dbdbafe1799027eee0f7475c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJN2509432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a5380cb2b451d789463eabe316c92020fb3fe1468d6cfeb41edbfa97c412e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:18:06Z), 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/TCAJN2509435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05499b643cb39fffef1f0f6e726d94922e34c705b0fda722dd8bd0eb21ec1f85. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:00:46Z), 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/TCAJN2509438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87d5ff680c11372058e93ef5123139fb9e13190a962d88f2dfac4c68b0ee673. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJN2509441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3565620d6bd4f01050c559369fa5736c63586b817294baca4408383702289e8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJO2509447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eb2475f4d72db00d67ce24b6dd4bd0b06e8b110dc09608e85847a00c87cb6f. 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/TCAJN2509452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60480891b9054902923ebf3d4a6e00d92d8131741f243d4a1d42fe396b7a53f7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAJN2509454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c706a08082ad610ce0cdca9c43bc30875c0370548e626ae3582e3397d899b5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJN2509456.