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 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 0xcb1d2faecb6d6c89b9ceef7d48dc17be3bd15bcaeb8665a486b7aa9b58117f63. 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/79273650-3e9e-41c8-b6dd-9fa29ab3b9f5.json and https://artists.proofprofile.net/proofs/artist/79273650-3e9e-41c8-b6dd-9fa29ab3b9f5.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 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 0xd310819658c9e53b93d49ac6c3ec6697cc96e419a1a48b3bb09d099a15364a2e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZAPG1746275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bed19e580d70610f9b11cf8b7bce68d99b4ebc7600ed69db46273b88726988. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZAPG1746277.
Algys (Original Soundtrack Arktika Incognita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2fa5e437026a69f8f00440356f59be5a6bf93b2cd00f1cc800a5cd29ede4f5. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZAPG1746278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eacff346c298533098471444f1cace63d06fd59798b380e53d98c8402b4a2b1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZAPG1746279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9de7e3f192ba941e2d9ba4454f90085d726bcd2d9a1eaac97b4c2bbd810f0. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZAPG1746280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a049be2135da6ceea251566aaafc47f14c970d84234596553bd3bea015d28. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZAPG1746281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710653412eb126726c05303b36421f5e2ce6ab0b823d4c6ee7b100505a94f96. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZAPG1746283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9a665e4c0c9a39893107f1ca301f8edd7695f8f08089b1d05a3752118495bc. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QZAPG1746284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02c46d49fc1007cb2458f7942448e4ed0e9f3b6162ba6d6143093162e3d269c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAPG1746286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72f4b6155c009b1b3da0abebe23adfbfedfc665b2b090b2ae75fbafc49ad1e8. 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/QZHN51977041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1952fc1dca5f6531f3c710d00eeab537d7dda0c8c597162113ce839f03326ee. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZHN51977042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fb22b88049d734b30cd9d720372f0a7fba261bd8ca73445e9cd5bd9cf88d3b. 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/QZHN51977045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abdb47a39f5afe788cef2b81d68e4133ae82c3b475e97ccbcf154dbe5228c7a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN51977046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac261b7f93e49057aed95aee54c38c4e0e2d009e6b99a2eea1cd65b700166b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ2431158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0e4751887c0652ef6d2aa8e6f024c5d3e201f2e4c0494f1ca62f440c2b713d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ2431159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2efc6d61772c76411b7b7706c9cc7bd59c840c7593c6f34794f8a3f33d3b3b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QM6MZ2431160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf5b463be79b0934ea3a702561ecc342d905cafa8215f84e69c241ea1bd919. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QM6MZ2431161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe610c4c789793e12e00f3d3bd09f4549fd0473ef31c1d26f22a8c3525262ce9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6MZ2431162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7fb466f9780e55d49e368fd782bd6c9b3c58c5804083247d7ba91de9cf7c2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6MZ2431163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4103876519f98b028f8a78566cbebbf5b36d5e1c5f26e470391fb1cf9faf7b41. 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/QM6MZ2431164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeade93a7a9a83ae891c0b1eaaca301b26fc2b7674831170866e74690b16fb4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6MZ2431165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898fbfe18b47f247643c8256184a0eda8cb18e5eeabd125bc0ac76b315dd80be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ2431166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc9da158fadc6788fdebf0ff3f2d994e5d3a74d90865a59fc762c73c870aab. 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/CAOOX2200059.