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 0x465e491b25332c733b665ebc46ffc4fa974ac87c6f50b849867dc6846d01bbe2. 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/fb628dc0-bdd9-4a45-bf97-5a785e4857eb.json and https://artists.proofprofile.net/proofs/artist/fb628dc0-bdd9-4a45-bf97-5a785e4857eb.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 0xa696d2fa108983a425a27a8101d6f00c59866f4f204d27a9d700928b09dbe628. 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/ES5300822701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc2493ea7a548ba543dd14e81f130a047c23527d8897a818c92d40710b6da06. 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/DEA590608901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c87cced2ce7cea290328a267f5e87867fd1bf81ae5a5973d5cd7e3e73e99d. 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/DEA590608902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa6c265baf513ebc73ac4bbc13c0dde0192e1e8c9fdc5e4711fce610c40be3. 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/DEA590608903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b33aad7a10de522ce48b5b17b10d7cc301169b8677c449ad91ec52beb574fd. 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/DEA590608904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbc5640b971a4a1fbf878948f0387ad5a49295ef8b167d116b3d213cfda1ece. 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/DEA590608905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fa3ddda1ad95f7d0dded831be788292aa66a4faefb8455e8d9d04d9cf1e42f. 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/DEA590608906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdc2888b1f00dc55f60102b2f8c1f5d425d2948bba385c4cd11167826c38465. 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/DEA590608907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb615b161ce4d2c3e71a38e396a2347565630bd81bc92ec97d239c5e5c698a985. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEA590608908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7187971007855c7a88aa4b6f07a3d1c8b0d153ba934643eb6728d45bf3af6c. 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/DEA590608909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc462df5b91a6f6e7351480d326fd676b9150b4b3f2dac771dde9e04c5da09e. 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/DEA590608910.
Every Day And Every Night I Dream Of You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e64df7b7d3c427b6ee83f536e884ce60b935f847a9542b54da7f213a0181271. 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/DEA590608911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ffe9ef08938f0fe4b04f2f7cbb77ec8279ed77a093170a5109c515741138d7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEA590102701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32fea798660b4678b388fa8473d5ebe9effa4d73dd2583485d21fdb1a853da. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEA590102708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569e3aff128ea7cfe8dee2c2c190a87942e8ab18bf73c30b901f74b4fa489e03. 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/DEA590100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993816e29b536694ef3ddee9bc0960019a560519711b634f325533daff4a4380. 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/DEA590100802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc29de43bfa96d0e68c58a514df23db1e6211a896ac77d323e7fb1a72d2790. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEA590100803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c4f915670c75f906e3e06382a221cb95fb07f7c9c4c27fbd9ca78c3f5fdb3. 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/DEA590100804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8b9af3c9080ecd7fbbe9463f6dd14b99b3cf1f4c0de3e210f246d46201097e. 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/DEA590100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76029605b0cd07639e3deb0108b062b26d8b1e73ac8f7ef51bdf39ee8b428d9b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEA590100806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87312f43c628fde31ba9a7ba29992cca17046d91ab24270d54b5843f959c4239. 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/DEA590100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad0724409bcf53259b0f40bb8be65cc8dc39a490cced250f2e0e406054ccaee. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEA599304401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc131b401c24667b9483261aca23c3f37417b42f31360fc7bcb8371d9f155b2ce. 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/DEA599304402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccfc9663d3982f1636c1566b57c3c32dd944239bfe80af7930764e85a7e58ff. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEA599304404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a59ce7ffbe682bdfaf90493232f96be3da7d9ac80b6e51fdce6feef799ec21. 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/DEA599304408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ac10c83bc377e60c98e98a26858e0d6029ce350af288e40a0afdae8cb10961. 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/DEA741320410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd59714c16983011da0b0dac46724d2217c20d2a9763cdd32a4155068f88b2. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEA741320411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17041efa2eee66cfac4b6bf4af9c41b03c6e6b8aa3142586990bc4d9785044ce. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DEA741320412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea02fad1d6410ef1d4928de4e1edd19111914e4bb033b2b867b63181f87ec74. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEA741320413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72224a15fad07413cf89a5476eeeb131be117536f1b4d0649cd0075befa9c229. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEA741320414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de3cc6044c6e75c7ae0d38e9ffa15a1085b76a8d499bfde1f304680ba1f82b7. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEA741320416.
Wedding March of Alexander the Macedonian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c69ffb7cc0f59cba2a849dff3322cbaf0749a2f51c68320f935a22e96cf8f89. 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/DEA741320417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56cd0f58784d70f896cb71dda1358ab227db467c9a8c5d774401d3979672fb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEA741320418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000f4293b27dcceb140c99c97556aa4a3309d7f4d5e9d9ef78b9bbdd41834b7. 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/DEA741320419.