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 0x362849c918cf61b0b2922e120bff8a2389a279279b4ffb8f60ebaed50b037ce9. 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/e4a9bf47-50a3-46d6-a7d3-746a7389d51a.json and https://artists.proofprofile.net/proofs/artist/e4a9bf47-50a3-46d6-a7d3-746a7389d51a.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 0xd34b2e0d382c2ab689bd8166a375d173edf0474f3d74803ac7a322febb98a790. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2147274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22e1c9c4c82f4b7bc44bcfdb19195900a09e6dc282d3e7d60967ac9ac96c2a. 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/QZTRX2222633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a262c5e5981ccde71e2680473d873766970c4770b29a2df1a44c499bd14aa6. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:05:22Z), 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/UK2FD2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16831f43cbbaeba0ea81b22d5c75b7da61aacc8bc2ed076efe85957fda6ac80. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBWUL2122642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1270d45c123bc58168440dbefb04a713f1294598982fc6220789f0542df0435. 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/UK2FD2100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b1fca1e0677e9caa027191bf6a8abd10effb274d58b412891888abf0cfa9d7. 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/GBRKQ2164127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdecca48e2b0b4125ed0bb2a3851c9cc839ff1510574f2003b30ba1a651572a. 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/USLZJ2192818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f548b8f4e5ff00ee6bfaae2abf3f0ff072431ead1c76ff94d3287f892601f33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2185011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2febda6feabac0eff60b02c958b390796c020b80d57f4df2c16955ebeac1bf03. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52110065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936d4245d14ea841978a78b37cbad7be143fa94450c6ec32d450de8d6dc7010f. 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/QZFZ62115803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bcd2cc5a13a99cae4b12a8767778d0ffe9cf5aac4a74c0c8d9ca900b28e74d. 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/QZTRX2239098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca40912f8902c7a3f01ca7bfdb81f30c6830b961113968c81a4d3f770d536c. 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/QZTRX2222621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d1e3a8873b2452a6ea9c684d41945e0302eee003bd27e0b14e6375d9a92ce. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTRX2239129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d427ade4ea42e335e0e033dc6e2a78ca9b7af1d2eef639a058f761d0c099d6. 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/QZTRX2239100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331dc5d810e64a25b291a85fc7eff87df56c9a7f6ea9301155407dbf11fe0ddd. 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/QZTRX2222623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319bea2e9931945c6d9ff7104af405c009ccbefc58a60f9e9292a6df96f0b5e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZTRX2222622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606c372fbb2bdbdbfb5fd701257eaef5e2361a6bf5055e63e3b40d31274df71. 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/QZTRX2239091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872a094f130389540e85e0d4c6897465dc07efb7aaca86d6eb72a734ea978d7b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USLZJ2484716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed204f364153fad2cce872ab0951e89b8f937709ffbdd204bbb57dae20c288. 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/GBWUL2171051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa884aec635577bb5f279cfa4b40ae881209fd14ef21278cf5655df6575567022. 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/CAVZ32100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4286e80cfed31255b9532610c0a97e797a094e766142588b4506c5eca14183d3. 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/GBWUL2171073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e21846d14891a7ec58a58a7bdd158b8e542006b2a38699cdd853e988ef1c61. 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/AUMEV2145971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96408f2237962ec2952da6bb54f9817f35cdc2b4271b83f7afb1f9a2909c96f. 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/GBRKQ2129039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa041b9125f281d313b52ecf147c64a03242bcf7b343842f5351a75b1e6d99889. 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/GBWUL2171145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1455e87c52207b730b5952e971c00c204f84dc08855c841f6148a7dcd41ccf28. 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/QZHN82132390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb83ec45651be6d1fa4eaa0bd47fd20ef51e8c135a0e4053070feb1ddba5885. 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/USANG2007429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d44b509c009a0376e0e869d84b14222e84ba592ce28dc8676d6ecddea3e854. 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/NL3XU2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a56ee5c2c3d446566ba56c228b8ceab79985fcd463440632d24061f32cd9ee. 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/GBWUL2155645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a590dcfb3e73cdc6ec1242599dd78999dfb3287dd73cfc20abf697c0cfb2208. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USLZJ2113560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20e4ccdc3dafdd3034c440a8a19ce7aff539d8400fb155432047bb50362dd6. 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/QZES71826327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da54ceb3d069dec84b2cea10ce6336795ff3694178fb30b4413bd3ef0388ed. 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/GBWUL2113200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e1eb392e993b569b2eedefd44378caef2870ea145f3ec81de4e156e73a5f64. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKR6V2116987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73491ead13253ea4376a8e34bae450d4fde49bf2684164481db176255cacaea. 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/QZK6K2185648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a2a7288203d0bd6e4f2beba3b6ba9a20b04ddeb186a0d837cc305c9f4eab4e. 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/QZK6K2106347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbb2705ba605833760c8281be12ec50d7e8422ee7cdfe6c3f9bd939982e4434. 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/GBRKQ2148072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85a2138a99dcbd2ff8d0bc95ea23db3731bf032fac6a747451eb498aab0ef3f. 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/GBWUL2171102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486a7063fcdf502f347e2e01a6ee59a5f4d72154a48d2ba1b91308e839b54296. 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/US3DF1853951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2b14bc6088da265e3234d678536cafd5fbdf558dbb8d0f1ba1e7eecd50dae. 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/QZK6Q2154357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdecca48e2b0b4125ed0bb2a3851c9cc839ff1510574f2003b30ba1a651572a. 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/USLZJ2192818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3c82c4f26f117827b8c53e98dfd0abc31021cd257efdc99f916587f71c6d6. 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/GBRKQ2155844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd1c03aacf731d9ad6a0e397b800a94ec0bf2dc6f8f7da80f84329f9a152dfc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBWUL2171112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e835ff4de57a95034c7400aff52ffcec5471ec65eda0b3a37a22ff9bfc58bc. 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/GBWUL2172755.