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 0x9cc3183229c2c725b023aebfc66e97da4abb97ec76e43a3e9eaca4bc2c4ac3cf. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c8e9042-2f5a-494a-9669-05f02e20cb30.json and https://artists.proofprofile.net/proofs/artist/0c8e9042-2f5a-494a-9669-05f02e20cb30.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 0x56b978095fb755e9831edd8a656c51ab5b5fe5c1495f5bbe67d6d5553f6f58b5. 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/FR2X41830390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbce4ec32ddfb1b6a0c77aa42f433f7c4c92f13f537cd9ae08e2a8b80f4e06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X41830392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401fa70fe6bbac14acc1ba82471a190b6b04db9825f7725a81db6094da7c5464. 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/FR2X41830394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3faa01cfa274bc71cd19c08f66c0b0ae27f7ea651ec7661e85a4cc6e0c6e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X41830395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319d1c7f5f4d8fc3524d2f241aa4e112e031d42f790c5e064bb26b548246d0c. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FR2X41830397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6f5734bc3a77daaa5ed0287edc8a1da5f70f9934b14cf1f01db55eeffe5f58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR2X41830399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be0c0e2b9b268a9091cf45270630d367aac4f95d1939834ceb84638c9950279. 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/FR2X41830400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d47611737b67e64330f313a8810c556cf33a4c742c3321b54246eeb207b026. 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/DELL41500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e146482a67afee192154331fe989ab3f2e62fa8ee3fc8f56d7d5e60f427d970. 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/DELL41500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ee0f582c42fe5682a85224098a8d30969fea78357b079c715e449c3278a28e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DELL41500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad5dc6a412b127da803c737df48e13641fbd22124ac5ec3cff55bd912b54e53. 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/DELL41500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30de8727bbb40fddb798a912d0106f451f5dc9248982381e968729fce7523d76. 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/DELL41500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cae0c9c9683b1a19c310ef2c4a384a71ddc959e679799ece237e3a89fd2d50. 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/DELL41500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbce4ec32ddfb1b6a0c77aa42f433f7c4c92f13f537cd9ae08e2a8b80f4e06. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR2X41830392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be0c0e2b9b268a9091cf45270630d367aac4f95d1939834ceb84638c9950279. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR2X41830400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b978095fb755e9831edd8a656c51ab5b5fe5c1495f5bbe67d6d5553f6f58b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X41830390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3faa01cfa274bc71cd19c08f66c0b0ae27f7ea651ec7661e85a4cc6e0c6e2. 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/FR2X41830395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5622f49721c1402a76787b1132561aa04a2908bac58679a6aee15791666d13e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1802409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7c24238a72b082d5650c544857a86dbae9d491330289faae3285975272e66. 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/GBLPF0214327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071cb365ce34998e0940811cbe1aa124daf64a00d452a231f9510bbb37f8d21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLPF0219440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41ab9169475b6f902148434f890e5d349b501061e7f2e418ce2be22c9c45c3c. 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/NLS6R1823861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253cb703590fc715760829c181ad054c07b533e6f89abea113e88e5181cc2358. 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/GBLPF0226314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0037bbec7c8b634dc9c27922390d65090a5a8f31b19f477a5b23ac2b5ef0bf. 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/SE5751808009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd25cb1f04df945daf9a10c79bbd48b4ae62701f8f33a0439f81bb5681f2f8b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLS6R1833889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d75a616c74bbbf7f74ece081f8f2e8968c1ad74389e9dbac640050e94a6cd. 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/NLS6R1837864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7995e4b55c0ab10005e8ca14322563b47d449242514232eefa28b8fe13f326f. 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/GBLPF0231781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7c24238a72b082d5650c544857a86dbae9d491330289faae3285975272e66. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLPF0214327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d75a616c74bbbf7f74ece081f8f2e8968c1ad74389e9dbac640050e94a6cd. 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/NLS6R1837864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd25cb1f04df945daf9a10c79bbd48b4ae62701f8f33a0439f81bb5681f2f8b. 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/NLS6R1833889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3071cb365ce34998e0940811cbe1aa124daf64a00d452a231f9510bbb37f8d21. 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/GBLPF0219440.