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 0x3d50e61673232214462d3f88b72632a2c3b1a117c05fb11a3ce631e36d79aeaf. 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/fbdcd322-f05e-45ea-b3b5-2be7e87cba83.json and https://artists.proofprofile.net/proofs/artist/fbdcd322-f05e-45ea-b3b5-2be7e87cba83.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 0x97a2ca907dc136aec8c32f5cd753d2b586bfcefe5775e2e7d46d922217bd38c5. 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/DEG932204686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b2708c7afa931a9b68eec46e8a3fa5fcb2bcf42fd7df81d7ef55ecf9c25df8. 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/DEG932204685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe389dab84e0980559a10cc480fc4b3f5606e6321bede159d3f81753f7f562b2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2265645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a417ab033a10639b0fe091f23f617ad9fc40050420f700b450422c10ed8da61. 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/GBKQU2265650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d66305e217954f6526e75302fa9001eef7276312402fc5fb063284a13810cc. 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/GBKQU2265651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe747986a54a2ecd0b31db754d02ac11358f368d87ec9e2f422753735a042f13. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:35:25Z), 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/GBKQU2265653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da66f8547d728976254b99aeb2277c463f5fd2c39224c210feab1a78c5a200. 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/RUA1D2142422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6c3de80890387d056be3e62919a933db4e5b7f1c8a77cdafe18e2697d2e86. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2142423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0a3bc2637515b8e7d4bb8bd1d40144c7d9d2cd393d868c7d0c7346b9ddbe7. 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/RUA1D2142424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7530d29a3a3cfec09d608a089c6cdb7e909266f41f4c150a5eaab7bf51585407. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2142425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068715a97f1a4f52a35d4c8b029fcb701823b27b01f63c1906de161c222421c9. 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/GBKQU2265627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8352ed60faa654b3985b6ec1baa03ee6618ab547867b704690b0f84ab354bf37. 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/RUA1D2142426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe82b8329e95f5aee778ba2f195f0b92a05539dd2378b30541da1460c0461dbf. 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/RUA1D2142427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec906bf3d4ad83279d131ea5bc8b2854a198e14731058859d241bccb77ebd24. 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/RUA1D2142428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a8126b0bf9b0b51a21d2774d46b4703a8d03603b912885448233a6d74a8259. 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/NOSTS2175010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac66da0bd00197be42ac2c21fa1d3a3ca64436399308991368bffa14a922beb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NOSTS2175040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f63ffb0dfd3405118a3b1146340338c81ef30c6439b7d28b7ffbfd933fd7a. 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/NOSTS2175050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c990f86ad976e8d77f9f769b5b5c4698a6cc1e95e1254eb389589a3d2e8fa9e. 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/NOSTS2175070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3abdcf9688b70a118066cf8c9692dfea3d9e557a1c56ff672aedc5ec9138ce5. 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/GBKQU2265639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e5947ee7ffab7dea9e17531bcae14eba43f65b299c79153dc1c75d1b1875e1. 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/GBKQU2265640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd229539d5dabb4365b3af61e6012decbcbdb00a06bf0b72a1b75c272339decbb. 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/QM4TW1993265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fae14695694cc7e357570a17418572cdb5d3edd09dc1546618cdfa7badf0a5. 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/QM4TW1993268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aff8a30e33f1450f4668c347a04544e9c40edb5b375a98571a84dd8b8c221a. 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/GBKQU2456509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623928816c549d72bf2d5f1e90dee12e96752c76349b2765a2926d19c70f7697. 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/GBKQU2265660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd66631f909d42f96486bc7bf687d3e45abb758412e16ce93a1c0929b503dc81. 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/RUA1D2020353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20ea1f89101b643a0e811187390770562d9cef50edaaa031524cbfdeae140dd. 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/USL4R1912554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf919ec4d07eb7daed50f61c6360d70f7e9bd79e8a0131053bde449d23dae44. 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/RUA1D1809066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6f7dfb1f1639e7661aea5b79c237a287d9132563f42429ba9bf3c260875c3. 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/RUA1D1809067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118b325eecf8795a2b88244c8025772a6935132c5ce3f72ee09cce1a72953aa6. 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/RUA1D1809068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889f3bd92adc77c1050915f91894f1aedcf9d542976f1172314390399b2ef1c1. 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/QZMHP2533341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4a18dc35f1f2d00e2f3def16168bfd3da1d482fdc99162cc8ead146a60411. 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/QZMHM2569118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455aca3efaed97f5a4982df2f66e83c1eb83612ae15bedda83936af7d653f0b1. 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/QZMHK2516709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebf280664706055af1a0bb574601776e017cb5fd47ea74a439ccf2b8860bdf1. 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/QZS642523579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b80c43ad0571a69d12f7e44227f7ca38282fdd1e2b1d2f7688c097ee55bc810. 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/QZMHK2505870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bcb85a121b778d25a90faa5e2ea7dedd8e576f1f1878a66d0c1826fe3145cd. 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/QZMHM2511492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc863568d9ed80b07b5bd14ab8c4a5a3850b7d2396a6c81a7a84289c6db82a73. 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/GBMWM2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba9f8fd7f44afc4289c8985502c7171741fe7f3db0e69f505597e74b94789ce. 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/GBKQU2456508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aff8a30e33f1450f4668c347a04544e9c40edb5b375a98571a84dd8b8c221a. 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/GBKQU2456509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33716cd73a73d452a3db08f01f43fc29b32c265d3766dad092964c0cd9749ed7. 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/GBKQU2456510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0d092c387a03dbb5d0701a002274e769d48b9a8a0bd0c908bc083a4906960. 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/GBKQU2456511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab05b1233770741ace7d84354046a04fa7af2d102575ffd3890e73b79865a285. 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/GBKQU2456512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21d11faf231a2370b3ae2f26982fd97f988c1fdad541ab4e7c7b1d8b558457. 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/GBKQU2456513.