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 0xc73ecdec150833a40f9b44966b68b6887a1dc48786c6fbcb5111ab6f562ff1c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ad1174b-0a15-4f0e-8ac9-cff61c87d70c.json and https://artists.proofprofile.net/proofs/artist/9ad1174b-0a15-4f0e-8ac9-cff61c87d70c.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 0x2dbd3777ee9f36078507b4a3d92050c815bebd709caf75f8aac78127216c01a1. 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/ZA56G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b418e079878614329ae05be1b7e02bc79719fb222ace1ccc2af176add6a594e. 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/ZA56G2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876587ba18a7fd3cfdc80122cfe93684b9b40683fb64102719fe1e14bece186. 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/ZA56G2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15641251fbdf4071cbc4d12b58e6bbaa37707d4233e35d262db308251559268. 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/ZA56G2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d89527de838fa502fdac354c16c14d2e7e517c82025be17b64c9c24754593de. 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/ZA56G2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f83b341e6efd075c7cd863a211c8604ee4932a3e51b762808c4b79f35a3a93d. 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/ZA56G2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcd3e9da4196be74a824a97b0aa499d7fa93e8feafc1981ea4552f77fe1930f. 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/ZA56G2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a340d1b95f6da52451892222ddadbb15ea0bb269111e1e6079cec27115f81c1. 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/ZA56G2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ccc1295473607c79f58f95d1d8a5696347f2a14fee513a55e4f157cc12e6c9. 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/ZA56G2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5d82de2c517467d2046260148124828cd3d282e166706975521d22fee512e9. 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/ZA56G2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37a25d998c185fadaffbbb4c3312c7f5167459adcd15f12291267bca910c2ca. 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/ZA56G2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ca77a22849e4dbcd6f0beca0a63109c8fd8b4d0843ed26faa0890c03ee54c8. 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/ZA56G2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c72933b7a9f8de5825f11268ce9bfb77b281b194e593f4f29a502763a3faa01. 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/ZA56G2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a31358131e38d20c3c6262485ce2435c38939e0ba34e1d571c18fb00151defc. 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/ZA56G2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1874b64deaaef51e4522102ae608f5bf3f9aa7e6abb887a74b30f890943ac0b5. 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/ZA56G2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590212399f860c0dec66f6f36bb61f180bcf81df5efb636ac4fb13b233514ed9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ZA56G2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9fd5e79ba23d112e8d6ed186872f890139e4d3bd382ace8e3e04218fa22c9. 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/ZA56G2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab25fd10a494daf7ad45771b61b6162bfc813669a5d9cbd16efeeb71144c26a4. 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/ZA56G2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857020aef6edf4f1116d8d9c54e286f374085ecc8c8722fff783436ebb39fba9. 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/ZA56G2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95554f386d27ecc6f2fa120b0665d8aec8caf816ccdb1be1406a5acc5eefffc. 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/ZA56G2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad25cd68e6218651873ccd08ad6c79ad03dff000eed32758f3ab0493d7f6b279. 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/ZA56G2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506a19e201bc0f7cffb43b7915e9fb70b547d82019dacf5687bd6568834cf0b. 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/ZA56G2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf8e697f98eced98b3d700fd479a34a1fa5d95517d403063833c5caea4b540. 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/ZA56G2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43cb81bcec361de00a3a090e7ca76c5f83cafedd719994cb0e53ddabe669738. 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/ZA56G2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509419b00aebd322f27c8a5b7ea07b056c7b24d2756dde3d7c0e27b86b6245cc. 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/ZA56G2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc98120319172a6a24f14e26071b425b7990f9d3e0598e52649d6668e2a2460b. 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/ZA56G2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8048dc7215f1f0cd6ebe5cd8811b6d52859d5ca4d43d300e098332af23f2bd17. 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/ZA56G2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76931da2995fa2cfc61e48f0f5fe270682f7b5af3b2a7e7ac74b79369a361252. 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/ZA56G2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9fd5e79ba23d112e8d6ed186872f890139e4d3bd382ace8e3e04218fa22c9. 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/ZA56G2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab25fd10a494daf7ad45771b61b6162bfc813669a5d9cbd16efeeb71144c26a4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA56G2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf8e697f98eced98b3d700fd479a34a1fa5d95517d403063833c5caea4b540. 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/ZA56G2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509419b00aebd322f27c8a5b7ea07b056c7b24d2756dde3d7c0e27b86b6245cc. 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/ZA56G2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0720101cf05654cbcae4a8f3d2268f53901b084a2332186da338b6ab319392da. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ZA4NY2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c25dc022722dcfde6712aac0deb62191882a349df0770b057b27cbff27125f. 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/ZA56G2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd351a02902deab88899a10d5bb2cded974dc09bae29b34f988bb7324a62fdae8. 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/ZA56G2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d8058f363489380e2b267ae0d650b914e755c0141eaa9abdbbcad92c29b22a. 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/GBLFP2014749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd93a9f67dcc7ef052a51f00ef586c35bcac4e221c1399f7d1be3cf5eaebef. 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/DEY472377918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0a294d39d225d8ebd6dab273fe04c783318b5b218a641fce40dc6351f3960. 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/ZA0011100086.