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 0xcc6075664b5342c2a00aa966518619017c0e5f727a3110923211ee3168fe5887. 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/40e08eed-c227-4612-85ca-da06f2feb4c8.json and https://artists.proofprofile.net/proofs/artist/40e08eed-c227-4612-85ca-da06f2feb4c8.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 0xf047176dfe88441a282c38775fb86ce54fd598461a6b568ea24e87736c232237. 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/UYB282118002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df65feec0d4e1ed21d6c25834aedb4c01375495d501be662bf57beb67a02a59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UYB282118004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad1d2bea59503f66737303b94a425547cb1a50a7e3af85bc805d8e57b92c99b. 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/UYB282218008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e386538ece03adac7e6740bb1471aa30996417f04554a0c38a630d72f43523f. 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/UYB282218009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12aa484cdfd6a03671c6f64ebae0319e3a6bf02d2e2b8c616b26e3d7e517bf1. 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/UYB282318010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511daa4562a5d01a69ea73173fb9129fa59f673c7653b0e8fd86f64a7ad9fe92. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:03Z), 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/UYB282318011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7044ec33cd39182ef321fd967ade37bb7384b9410c92d09ff255f4ca104be7. 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/UYB282318012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cb565fe5ffe29feec9f1a919c62e7f87d253832c3113c7960ad465518b11e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:55Z), 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/UYB282318014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d5bf3fcdf73ce6dc1abfdd0ef5697c1c58d249c8bd5bd3c0f858ffec967ed5. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UYB282318015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511daa4562a5d01a69ea73173fb9129fa59f673c7653b0e8fd86f64a7ad9fe92. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UYB282318011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb077c3e3f6b99851ac93a92b6c0f5a8c60af7b6b08d8c9bf11710e61e7b8379. 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/UYB282318017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5431aceef6997220fcab092fb8c84d6cc6e2432133917f0cd89efcf0e99f06d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:41Z), 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/UYB282318021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed106d82a6dde4032c43e6fc705b67237d64a328815236f4a4db2a8bde954e14. 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/UYB282318016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb432bb3452fb53d8e0a2d4c4a805f9e279451c86aae0a78852ca4a0c2e5a7826. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/UYB282318024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a089a33fde87dcb1c5527b094aae98ff29844d6421821eb4d394f2749c529. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/UYB282318025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c160eed8168606ba31bcd585734cefe2dcfe504b9312ed26bd798bd739b7874. 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/UYB282318026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ad2bbbaa20480f43c514ed522adc428d8f130cd9c7c4641b600dc4bbd1663. 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/UYB282318028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557d6528a6f6ab8be3ae9c3125f3ee949ed413f392639619fff86b8a074bd72f. 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/UYB282418000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe74cc8931996f37baff530623cbbe20c6682f624b000c2c54c9dff5a25bca54. 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/UYB282418002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bbc71ec860c8dd48c3c28eee296d1f8b5a81056e29202f98ead4e1dac6cea1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UYB282418001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe74cc8931996f37baff530623cbbe20c6682f624b000c2c54c9dff5a25bca54. 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/UYB282418002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af06ac5eb65475a300601bcbf137fa7408620e1ff3001f07532b081b2845d4. 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/QZNJZ2496427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1c84d9b361c1f4a2ba36950fcd7080fad19bb688d234557ff4ce9bc48adcc4. 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/CLPP22300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb93a90461425ff1961782145a58e6409bcd438672fc10d3134af5b54a10d37. 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/ARF112300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3e68f094f80d7cca34f4c117c7f3455b65e928ba95e08d5f3cdf168e236b1d. 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/BK4DA2402239.