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 0x849fd88816165a788e5e7b2f7401b0963a50dbd983abb29678817a1fab8c9e28. 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/635d4559-65ce-41bc-be6d-e3685b452ff3.json and https://artists.proofprofile.net/proofs/artist/635d4559-65ce-41bc-be6d-e3685b452ff3.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 0x8453ccdc6cc70ff57a3dc25d1eb58667e2d682ee247f4b03c34524a4cdc7c4c9. 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/AU9X10500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f6aad94bb7ed35d1462efc9d1259e79f912e7ae378b4e58f03a97c412b064. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:19Z), 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/AU9X10500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f1ed51e3914e4ad11f3aa66b8499233378d8286ee2060e9118ac07cde7d3b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AU9X10500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b923f4de5d1942f2a3d2fbc0b263b599ec06076dbeab0d27f66e35f55c18d85. 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/AU9X10600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec33467a07b0faca2aef91b82d5cb070bc6e5713cac124d5799a2c4ba582915. 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/AU9X10600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2a8068cbe3885e86c95408a1b2dcd9faeef4148cdb9f4e04e83ca7eb2c94af. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:20:27Z), 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/AU9X10600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6cfeef848c42e126f878354527660e119b85143e475aeeaa1e94c27cf44d2f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AU9X10600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e847f76461a1aeb75af064a5a2ce7cfb32eaf2b870cfd4c318ae1987377bf4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AU9X10600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc43bafcaa22ae1227ec351b19919b08cbd09d4ea4e663623b6f8a5adf2c586. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/AU9X10700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da33e4533f345dec6440fc050afe851567fb4d39790340b999511cc2bae93e8. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:47Z), 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/AU9X10700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2154570f1e6cb6e6d87f488ef43c15ebf6a63b0226bd202875e129882204db5b. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/AU9X10700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413af9afa67f70c719166ca44c17601662a84d15b515e8b27e2b06cd4e0d88b5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:39Z), 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/AU9X11100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f971007b04359505d8eb0ce5bd5e80561b5ddecda8ab4149273309ae0a052ce. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AU9X11100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc310e38a601b2031b2de8eecdbbab34504a599742e0a1bd117c600a24ba3cf8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AU9X11100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a5efcd17cb96ae65a4a999d4f473984213191c36c239c3051f10a95bdc854. 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/AU9X11100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a9a556ca8a56152a70f11f84178b23723cd0d9fd7541f7a48c020b3b7934b. 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/AU9X11100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaa29a887e3c83c21a6375e95cd0bc83d494e5e539455e441ccf6d22bca0214. 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/AU9X11100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f18a20ff0cfdf519c1e14b9205a332073912020a98310b99b9293e5172bba7. 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/AUZQJ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239bc75ea2aae0d2ec69a49036545e2e236dd618c8323d3261ef2c467c6676c9. 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/AUZQJ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d23b4404dce6a6d0ecad05235999449d21c82b205c6d57d5312b8a7ccbc0bb. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/AUZQJ2000002.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445871eb46c3679cc6ce170853237a5eb4441f6c3c17b30ec1d7b1b67643c498. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/AU9X12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7867539b8b955be28d44b8ae9fb6782b8a950319343b90bcf2619d67d2115b. 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/AU9X12000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f1f5b13eaf63cac252c4a2cdc264ecc74b99bb601c3ca848e2bdc1e2b14313. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:36Z), 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/AU9X12000006.
Eternal Horizons - Temple Step Project Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52277741ce7b425b22249e8c1b22eec3ca713bb00b48709458a1b534322e7916. 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/QZEWT2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd69dcf471c68e398154dd3f53be9910f0f2cb5dde53a2666819e0632da38d1b. 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/QZADU2012501.
New Generation (Temple Step Project Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d1fb8f271b896e9428748c5dae45b0c32fe2237a8d9ed62ec86edcfea6f640. 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/GBKQU1787842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934939f56a0868d41d52724f965564ef3fc48ae501e033633632b1f54ffb2d8e. 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/GBWUL2296225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2601b6087f881accf8d7356ee83034dd278a1a14ce9ebd2bef872fcd2071d5. 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/AUZQJ1600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca8f5ce75e6c2ebeec7568fdc1614fd64fffced5c9b94da5cb0377f6842e62. 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/AUZQJ1600015.
Eternal Horizons (Temple Step Project Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52277741ce7b425b22249e8c1b22eec3ca713bb00b48709458a1b534322e7916. 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/QZEWT2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934939f56a0868d41d52724f965564ef3fc48ae501e033633632b1f54ffb2d8e. 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/GBWUL2296225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4aed37168c8e06090503500ee4fe37948c6acb7c0fc3083604931f0a938281. 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/QZADU1809109.
Ceremony of the Heart - Re.Generations Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6188919e7409ff7394936cb588fa3f5d833791f8a7c3be38f5e495d64c1e9. 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/USWS41717209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9fd82e3d5703f115017fc77b19ca0fb5c64c5a69fd2d84ccf2abf6cbf0d21b. 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/GBRB62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a79248f8cad1562ae8df62b7416eb6a1c46490bf14f47ecaabe14786d29240. 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/QZADU2012510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c523a1c7e0f467cbd6878a40c9113bd0e6c01a001295ffd423dd911a899b1d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBKQU1700731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b360267501bcbacaa34d6534ec8381338fa39baf6d5404630fde19bb369d435. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/AUZQJ1600017.