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 0xbe77c6622acff3c407a6c536d342d7e09d746a3bda75968cef0d0531e1f4ab2b. 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/8201c893-4fc0-4489-91d5-03a2425a1450.json and https://artists.proofprofile.net/proofs/artist/8201c893-4fc0-4489-91d5-03a2425a1450.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 0x722995e2572c95881cd12eb62c20fb03691977e4fd01fd4cd5144fefd8bd6638. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTV32404649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3302a4f4af0c0888cdef9bda697966761bcbeb909443c20fd318a24dac79ed. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTV32404651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e5499d26dc5c92da131d00d7b48a48b8ba5348de1a8f0f2bfcafdb6d749b67. 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/QZTV32404654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e3205de8468e01f197bac1e2343c8f8878d217dd5ab57c1a1cd0aac37e142. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTV32404657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a73e0c247fe5bebc4d26f6cb53f290035c88a676263ccddd9930c5d1900f29. 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/DEPI82431964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e41fabe9ed15efd0b453a9c1c86982ab645f46baa339b89249e4f1e09dedfdc. 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/DEPI82431960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d7046e6611f80dd58bf06c6eebaccec807ed2cee19ce7d1d78ee954b75645. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82431969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d746df8f20e0246ba08dfdf035be324f9c0c92068656a62cfb0c8e1cb20a5f. 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/DEPI82431967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ff9d8b6519ec01c46abee4d09571c41b0babdef564f69242fa1b08c0fd1bf. 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/DEPI82431972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298dd1cffe09fc57cf4d227fae12ea28bc33a17e3f29635a1525959a32c9da13. 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/DEPI82431971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bf96ae9a31f42df3157ebace5e3164bd942efd083e1d1bba219b6fbcdbfe8. 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/QZWDE2458943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839fb35e426dcd585c6230366d25845125181a12e2b068e78aa1196317bf2211. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDE2458945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933a01c74311bb6ef1cd7561bc177ffee7ce8c0bcd6a6b97ba824e033fbb2bfa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWDE2458946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c2fe2694e7d5f2c5afe0fb5dc39c0b07e3ae93706e03b0f6b5eb944c64339c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWDE2458947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f4a64281288b933bd6084596cc0ba0f1ca4e33f5ab8dbbda86497aa8ddc8c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWDE2458950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf8a68af4fd64661b23fd3580630323ea1b39249c268f6f0ef8f615f885694a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWDE2458952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd0bd73584ad6aff3f3867d1b880932945224635bb0cf3ee6ca9427be2d813d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWDE2458939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1829fb43080360baab56569d323b76d378518687e086081791b885c1c3d3c5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWDE2458941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bf96ae9a31f42df3157ebace5e3164bd942efd083e1d1bba219b6fbcdbfe8. 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/QZWDE2458943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933a01c74311bb6ef1cd7561bc177ffee7ce8c0bcd6a6b97ba824e033fbb2bfa. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZWDE2458946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c2fe2694e7d5f2c5afe0fb5dc39c0b07e3ae93706e03b0f6b5eb944c64339c. 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/QZWDE2458947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6904755d94134be540c1b789cda55331ef0e7cfbf27f728712fd66eaeb2d13fc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZWDE2458949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f4a64281288b933bd6084596cc0ba0f1ca4e33f5ab8dbbda86497aa8ddc8c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:21:48Z), 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/QZWDE2458950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395e73af3d43c767be593e551d400eb2edca4e49765748dd99043a5a637de984. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDE2458953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ce51c1fdb6ba261885d38e4b62a327847c0487610bdb4c8917ac5e203bb234. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82434422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab8ed917b2fe0e06f92406dbcf977656a6cc9c00743d1b062d2b96e73f07f6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82434414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa612cf10e6e95c9c9f59f66d23e9da02a378ca9196daa755a296e56554cf700d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82434417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f47048da8cf859123013fd162bf6d1445aa151c31a203ae3184e2cfd3f21c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82434419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe509041aed45490017111633a89b24205028e2c61ccd925d9b96ae1100cc52d9. 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/DEPI82435924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c0116acfd568ae245d7925c01bd357e4303a5a4e34804e7ad18e8c6e79924d. 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/DEPI82435921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daafec889cb270cf601d3bb2efc56dfc8f97a141da94f29ebb959fb3765c9de. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEPI82435919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66bccf443ac45b634ce1d6f55abdf11ba3e031a49b7b74de02a9d2c92578fe6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEPI82435927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49e85e612e396cb6af568a723c02467e1b59ebf8b900cbc99cf15a2787b3fa3. 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/DEPI82435918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb836181a87f7a4a3801bc49408f9a29725b8d83eed8e2669b1b3c746f6633b73. 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/QZWV32458869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa430655b8a0bf83952bbde30f3b7936ad6caac2bea2901929ffedf462f59e817. 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/QZWV32458890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eaa80f28432614bcf558f05e612e24d3e8c15281df169e7e70d9d9acd2f986. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEPI82504472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63b2c1ab29b65c0d2ae68ef0969bb05947fcb9ec6879e40b2b80a2056e488d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEPI82504473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc636a97a46752e781d690f357dfda97984621a0f1bfd6563bfb56199a0be54e5. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEPI82504476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8afc7fb7c8b1952666e934388624b2e4937635de658edde8e2c8888092609. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEPI82504477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80409783a20c81e9be1a8b50884995e54f3777cd99219f126025c0b4f50dd573. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWDD2523936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80409783a20c81e9be1a8b50884995e54f3777cd99219f126025c0b4f50dd573. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWDD2523936.