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 0x001d1307b3411f25b88dc366ab0431b8afd275f8d3cfec8918cab89e7d8f90d5. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18c7e63a-38dd-4eae-be96-3e57d6a6e33b.json and https://artists.proofprofile.net/proofs/artist/18c7e63a-38dd-4eae-be96-3e57d6a6e33b.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 0x736d9d8c1db5126f27aed252708678728f0a1cbb4095a4bc4bbe0049e33e05ab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES81821036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ef2018d16fa9e72e3225a28196cd0bb5b05c3796d6ce536e9112631f0a8c32. 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/QZES81821037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95605a7c8a2696270c55a375c05ceb6ff9478c0ef1caa85e04031852ea72d062. 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/QZES81821038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccb90166d1e9b43c437870dbf4b3f26a1aea223b56a653785e8e5a2bd9bc325. 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/QZES81821039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9af7336e2eb5eb16a74063af43835609cf945b626b6457dc5477ad61661d12. 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/QZES81821040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355b2c0907b17e026161622a7552aaf0eb7f0f3ce06f7a63457a8d10484bf93. 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/QZES81821041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bedbc6e0cf54093f92e009580522b26bda3925a7a07c044ec081a93e635ca1. 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/QZES81821042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2466c2b5302745e5c850fd4431ee472c07a67fd0b260f13986988758f4f391b. 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/QZES81821043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0569160e6e2555ae45ce26c675aa9736da79c2070f7625a6a5dc5b9c53e0c5. 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/QZES81821044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf686bed99692cad2a286ba92397487cec2bf14fc1a3a6969bcdb147ce8b38812. 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/QZES81821045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f8c97a0426155ee36bf66e0cdb44de4e745cd33d9525f17d91aefdd32158cc. 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/BEC261490406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1fadd25060609f2c9e013a676a95d56d2ec7784eb62cc8e53cf7ad16c1f970. 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/DEKV21800420.
Parallel Worlds - Solitary Experiments Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f8313d34b52109c147d941e2ca64ed9a725e3e121741e6f2b2568fd5b1a0e2. 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/DEKV21800437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3274a65a273d776bed7cf8ba2638fa1b680d14d1bb8fd78123d7a95aef8c8c66. 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/DEKV21800436.
Parallel Worlds - Shortcut Remix by Christoph Schauer - Cyto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13517aa005fd425ca8e7e1ab4d60ee52113518d7754d72ba87cd57b015e50aa. 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/DEKV21800438.
Breathing In Fumes (An Infactious Tribute to Depeche Mode)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaba498c13ce47b3e1475c7469a450d85135c6b3286a7d10984945c4b1b06ac2. 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/DEKV21801406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bdd47bffb24d95b59e5d1f0a8d1b4a2e33566f91a396a5c194ca933ffa9dc6. 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/DEKV21801407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ff5af2487ad3f461a78830c4613d3b3b5a49e0651abab9c3ce9fe19642f694. 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/DEKV21801409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd547faa6902ef04a1bef137ec253837bc541d9cf053ab8c619d4ffc72a25152b. 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/DEKV21801412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa360da29570cca202c371444f4b106101a7387185ddf845ae493a0f7f2aa45a1. 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/DEKV21801413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d69c9c189d6d52ccf3302bf6f3550cd2b3da85a4e53fd5a53998784e6acd6b. 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/DEKV21801416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112b14947da90b35ed3e7f62e2a4c98d84887c90c3b586897317de00a3231b5f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEKV21801415.
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 0xe359144245b26977f319abd77fc69906ed3b9c478011c5663ae74dbdf6b74dae. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/DEKV21800667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efbdf5339e9238896bd9b62950fade7f2910713fbf7cace21c161c6362a31da. 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/DEKV21800668.
Burn Down This House from the Inside - Polished Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4279d4e0431b322b4c69863e7e2f410e10e58a48e17c9ccd908366fcf955585. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEKV21800663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743819ff58efd31b5a2c7952a7f27d39412dcfd7b49fef38c5ac1a998c37bb46. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEKV21800672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71bf4425f1c617b574f0f66f106b6ddee663ac50eb17a2dafc7320c854ded11. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEKV21800673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4ce268b523fd45ed7263d9c934cc218475f77657f456665813273bcba7dca. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEKV21800674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379c696ece03b8df9ad4c8057a12ef30c3735cd2789b1870764d58ea5eff92a1. 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/DEKV20800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c7cf39ff93e7fe3853271870bf4a3a5ba65662d394eae7d9dd36a7051004c8. 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/DEKV20800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b53a538fd1c8a37026872a44276dc0ff86fc55076434299808dafbb96b3a56. 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/DEZ900600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6f65c05ffa33a8e66668ddd5c3075050bed145cc86d7d207a14cff2d18b878. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEZ900600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba0bd4ce200d0a2af2269461559e0bea95f6047af813674743ba68979dca976. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEZ900600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f557c32f72024183814091cebb0c8fb1652d2075026c93a49696b745aa92bd. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEZ900600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376da3cacff03926b253de2c455dd37633b420ac20d6d1de4abf9173c58f8f60. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEZ900600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c757af3af95a1985118910aedac175fb532c6bff50158ce2ccea418340088. 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/DEKV21802359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7574f58615667915229737bd7d64b7198429187cc7ff01caf2088e457cf785. 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/DEKV21802276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a22d7ba512f7411fabc723d35cf2c49441cffeaffdfce7b9dd3d0bb7d18584b. 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/TCAJI2586524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1624019554d482f7b12591e70f53b2a4c40f3bac36086a2979d54311468ecc. 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/DEKV20912202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e7fadbde9170cec2b2552d0e8a5753f2faafa140f60ff9d08e78ca377dbe32. 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/DEKV21612622.