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 0x6eef0825bb7c865ef21d457254e1e6e214152e473fceeead12f47f2f7a2eee43. 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/b484dfdd-4b73-42d6-9c69-d1b5099acbec.json and https://artists.proofprofile.net/proofs/artist/b484dfdd-4b73-42d6-9c69-d1b5099acbec.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 0xea53d23d3c4f6bab9923e4c4c0362646d52e07f5b9ec1a6f68fb78f2d550c565. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:08Z), 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/TCAFM2177141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022ae4da338ddc3565a6b39ac7a577a71bf3b0edc8d58bbafbb703667ea55d4. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:56Z), 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/TCAFM2177150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ede797185de69135969947850682a5feecfc62cbabab93571157e406af62599. 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/TCAFM2177176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea53d23d3c4f6bab9923e4c4c0362646d52e07f5b9ec1a6f68fb78f2d550c565. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAFM2177141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022ae4da338ddc3565a6b39ac7a577a71bf3b0edc8d58bbafbb703667ea55d4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:26Z), 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/TCAFM2177150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a58e2c1c6421799d88d8f18615231ccdba10c92de74382a32b12a3146554f5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAFM2177171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ede797185de69135969947850682a5feecfc62cbabab93571157e406af62599. 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/TCAFM2177176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a256b18ba6fc403b9afa13d6ebe0d67175ca25c3601522d0823dc5e05e4c98. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:10:23Z), 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/TCAFX2116043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ca9c0d88bdd39f800836ca8145b409b20aa533d69b687a3188ba5b0a5660e1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAGD2242521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46bf5d6c97f395c17bdd0f16bd49f6c108b3264567d870b6f8f771e784fc78c. 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/TCAGD2242537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8939a216925b8b76e50bf4308c11bbd5b67d260e0a317db2e6b71326f33be1c9. 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/TCAGD2242546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f00808b597f7815705b7cb93b98b52569a49542c4a1b2590a86219a0d768627. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAGD2242552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ca9c0d88bdd39f800836ca8145b409b20aa533d69b687a3188ba5b0a5660e1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAGD2242521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c804932bd4e93da56a20cbd2a461365f4af00b2b5e875be307b0b059d438976. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAGD2242542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f00808b597f7815705b7cb93b98b52569a49542c4a1b2590a86219a0d768627. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:29Z), 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/TCAGD2242552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6deb89143bdb9ddec3357a3dd07c014576bb3386842bdbb751f4140292f7c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/UKR6V2256191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71af6c6094ff9524f621de55ef244438c2ba6ac592350ccefb435402abbe6c2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/UKR6V2339540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5245af4004ca421b4e29d02820efd19bf2b3ca8b39b2a3d1fd2684d0cc55dc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:21Z), 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/TCAHJ2309363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5245af4004ca421b4e29d02820efd19bf2b3ca8b39b2a3d1fd2684d0cc55dc. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAHJ2309363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f7324dd81ff93c3817d0e4d727eeb1bcc838f1f4aca764904c688c4a59f26. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:37Z), 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/TCAIJ2440430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e5e0889b1decda7cdb75876aecbe5ebed9dc839e82f08323c8597c67d8322d. 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/TCAIU2443396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85645de813439e793120c2412e707b5765126f8b3cb903815e56a6fb50381937. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/TCAJF2511527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85645de813439e793120c2412e707b5765126f8b3cb903815e56a6fb50381937. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJF2511527.