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 0xc4f22d4d7d5394f730e6a9d95090019faabfbcc3f4e911683587627e25d1f832. 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/38294590-93f6-44cb-bc85-100d94cdb006.json and https://artists.proofprofile.net/proofs/artist/38294590-93f6-44cb-bc85-100d94cdb006.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 0xacf73a31a9b661755c6a8da564abf27b0aff5ff053a9fd0420058b40e401f6c6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:08Z), 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/COA9W1929854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c4f6015776d6ab930051fd01989fde0b70456f35e1ea69a7917046806859c. 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/COA9W1929857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69639c381e3c9ea27d2874920ccb2b15f18b55467acd91499280692efb5abbaf. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:23Z), 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/COA9W1929858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec16145ee627ae29d9becd3408d3efb18399c416a723e657effd88dde4ebae. 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/COC018818994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c46e527b5e9ad424353e7aae62f53227801368361eab3bda5a254332f047e. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/COC018818996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc212a469113b68bd1256102d88e870f0fd1991da2d3953267db8242871217fa3. 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/ESA011914982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2503849bcc818071d4bc972d4b21d491033ef77872412a1d9b558718ceeae. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:41Z), 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/ESA011914981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9b8322533941799fd437bd226f05734e7f8354fd5058b8e14dd6e6a08de8ec. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ESA011914985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1896fe18799dc4152dd626e3d7d181b0e58287e1d6a2c6396534e0f35eb44a. 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/ESA011914598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64501c5ecfe73684cfef6cdf9f81f51b972cba6103b0cc359078edcdc6b7ba00. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:04:59Z), 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/COA9W1929862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41279af62dda7b5b3f88e5879c688ea8d3ef20af9ec390ed82d846ea31cd146f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:00Z), 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/COA9W1929865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9622485cf0b82a67c8f301860bddd6cd8b9bbca5b301455d0c5a9973b3cb6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:32:38Z), 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/USMP60800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7127bec1ea3f955c752bea051ef91171772eb1a0c50c835e807dafe9b54a8d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USMP60800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3093a1c43b69bb88c30b1705fa918826baf56271fd02dd881c55cfb134f52. 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/USMP60800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1efbd08ab745070c1cb6d089fcff1449aec4c820019f6257eb7bd89828a1f6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ22B3001182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e719c35980a8314a6a578a26269751214c97567a47b29056b5dd79ffde5164. 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/US4XG0202067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3337e973e09b3752c072b696738ba97fbc896365f93ead6e0e85583b42ca7f. 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/US4XG0202068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41abea2111e10707a31d9045759a3631ab9c51c8cdfd16c2bf6a2ec3b94c060f. 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/US4XG0202070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7907f27331451d89d7df40251e45ff6a18e43a89c10a1837bd714642dddea81a. 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/US4XG0402805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7adb594816ec1d46784491d5183cc05714a7cd60398aee37c741999194d0ae6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US4XG0402806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95737842b65f2b4fd8b123911643b7e5324815e301bec10b05b50bcb73520175. 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/US4XG0402807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c0f54cfd7147d27dd289bc4c86c8aad9c84f5b066fd12a2e4f7d1b8dc4004a. 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/US4XG0402809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea777dbdba41a4c1940bae59199ca58ff0ed58b5b1ef85977a025ff4ae431df. 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/US4XG0402810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d32fc9edd7d8446eb9561b542217da50734217c6699c68319911ad7b4530a4c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/COA9W1929838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a428264202fd270bd7cdc9f7cbd6c4c13db69167278186cc64ee11280701bdb. 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/COA9W1929839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0ad8cc18f2623b68a322868f2f649c607c5a7a7628a6e3a7e7077b94a72a6d. 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/COA9W1929840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77d8dfff4886bd7d3ed53e6fab98605d55d101517b1bbddaf386cfc88a58bf7. 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/COA9W1929842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ec3702c3b076f320f40e3399c1f00c442f404c5159e3a2cf1ec915f91b8fa. 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/COA9W1929844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eda63415d873a9e05c191909eeea93abbe4122c4b602e66cbda4fd124aff7bd. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QMHUY1555258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7026c7761f3a6535a28e8e833628b14c1b98476ba7b8c9ddb40be61fa6b92c. 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/QMHUY1555260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c152e9a7d7418f8cf46ab5b6c9d4dbfe32bfada95debd0ee7a3c855b19d71cf. 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/COA9W1929846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43729157aa215dbe7a938529ee4542a9781694c82c23011b2b9aefc0746ef552. 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/COA9W1929847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7221c6bc6aa1956bfd606d0a49f6e65293e0333b9f732e52dd7e79e986bc0374. 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/COA9W1929848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a349403a3cef86565256e2369d66cc624f977d0b348028aa2bc9863c820b20. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/COA9W1929849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ce3600408331caf8be855e0016eb61b48e632c95c9f80d25d7a068e6990b6. 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/COA9W1929850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5807115efe97f34487566f0470bb9f9ba0067c9108cf940889e88b5cda2c868. 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/COA9W1929851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3028b315e672e99119d63e19975d439f68eae6151fefc1b29dba13f0cb2500d5. 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/COA9W1929852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8959cbc050e24a59b1f035b77c41735905469e0a082bfebd5656a133a4dcb. 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/QZN882212779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ec3702c3b076f320f40e3399c1f00c442f404c5159e3a2cf1ec915f91b8fa. 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/COA9W1929844.