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 0x70f5dc9524b3e7791617d0ba3563d4ea5b0232dcd990ca2dc5755c7230b5a1cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e5f313b-29d2-4d5d-8d8f-0ecce536a56d.json and https://artists.proofprofile.net/proofs/artist/8e5f313b-29d2-4d5d-8d8f-0ecce536a56d.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 0x64e7f2eba7fd1beb83b5dd85e0373a8bee00c811a971d4be3f24e2be29acc33e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR59R2056483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0f101405f1d74dfab1155ca6e09b3625961e827c0f53310c6a13fe657a9c30. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR59R2056499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fce96641037ab69249b30c68301dd5affb87416e0430dc09d977f80a8e8c40. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFME2237124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42674458f4d251da0fb64e87cdacd70504d6529dd78bca7b2780c27ab02db2. 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/QM4TX2474948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a00de98d4e6f67c9edcf776e2b2547bc19c1f3de247253b96704b9ade1da5db. 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/FR59R2043302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbde0c03db893cb437989bcf894ec8e06793178853086d6c8cf0d7ee2c307d2d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:35:36Z), 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/FR2X42144251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2562aa789b87a5586919e88e8f72a469c718c2e7ee4470a9117bfa13c5111809. 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/FRX202151879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea835ee0ef066d1eb0c5ecdb8c1c88cbf8b9c957a98568f9d6909e2da44254b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRS182146781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d5b230d1ae91ff59ce432c4b3f2eaef99d335faf462eb682c0cd4f9442500. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FRS182146784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302332a3832e14f935fb0cdb1b172985aedb583038a0924285f1be4721ef6706. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FRX282290779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12443422ffeb58fc3626e90483bcd77c878a43106f838dfd43a37cf02dc21626. 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/FRX282290781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e4d835c123bbfb887193c799c635fafb8119936d591a105e939a34582e51f. 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/DGA072274892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2d3e697c2473bd28d561eb1b86e7b65b65edbeaa3a6a2154082a0db5f32bc7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DETO32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032b0931df34eca55a722a469fb05dde2a8c80f157d8d172ed4d10a3385fc1c9. 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/DGA0H2315323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf813bda8f5784edccd19e3f7f3ed79b11eb28641f303938cee71ddfa2d7b9c4f. 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/DGA0H2315324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e9c593a96692395925ef1e0cbedab5aa4cb881b61d289f1602ff9c249cd3d7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0H2315325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dd7d9925f78c42f4f6ca1dcbcf9fc484f0acc435ff1765a977ec1c86278f19. 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/FRX202095333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb8f79a83abd7039bd3101834e37e8e8c11aac98d77c7b82be0f308e4e70d8. 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/DGA062350179.