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 0x8ab3789fa331bcc6890e62ce1ff75e09a219de9a6cea0142ee012b7847c736b5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb811454-4b94-4b9f-82ae-3131cfd7463d.json and https://artists.proofprofile.net/proofs/artist/eb811454-4b94-4b9f-82ae-3131cfd7463d.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 0x96de0e2692f80ab3e2a5f7df3b9a06861e3d1e1a9f164f7118c86a4c1c02c469. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/IT0QQ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de0e2692f80ab3e2a5f7df3b9a06861e3d1e1a9f164f7118c86a4c1c02c469. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/IT0QQ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ad23cf0bb3fcf1f02368d4b33d54ff4a5876018a54d971a6bb5222e7b0ee0b. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/IT0QQ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b67f0cbabfc38bd6e10f59940fd19fb539039b0033c214777ff9ae2e14db5. 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/DEBL61078264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6249eed23693a8958ad19a0cf59019733151b3ade0f6eea05d294b771b6ff. 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/ITC941200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2be448b5542710dbfac20eb343e889e396625a4b54806cdbaf978dc828b66b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ITC941200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1efdcfb3942a3b88be5b0e0f8daf1d7698d9d8c073839b9d3448e352d3b2c91. 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/ITQ001400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60caaf4b10be8c89298ee652ec1ae8da719afd6a2ae2ed7baa94fb2efb786874. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:31:09Z), 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/ITQ001400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b7d8862f7908e83ddbb82a6f22d1266a586404a10d28fa11bd339c94dae88e. 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/ITQ001400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d3f6ffe336f00bf3379b9927e0bedbecabd3889ff62d54f278d705bd88dc6. 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/ITQ001400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b32701c0bcecdc5f2349282253ce835eee56360b6ac977d8231e7f5bbbeca. 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/ITQ001400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003e3b65a7eb9a71ec786effa2d040536eb541e4c78914cf5bdf9ab19cd14abe. 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/ITQ001400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003e3b65a7eb9a71ec786effa2d040536eb541e4c78914cf5bdf9ab19cd14abe. 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/ITQ001400154.
C'era un ragazzo che come me amava i Beatles e i Rolling Stones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec20ecc522c7879a9e92e58a3a98ef462e6d4907e249dadd9a4a49c75a3ef0a. 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/ITQ001700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde97f8d0beab05a902fd55d5aac3bd6210787999bc7bf2663a2e032065c5eff0. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ITQ001800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08cfdde8a0e39c63375d3115722f655b4f98d4a64d0dbf9f6bb44b250d455bf. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITRZE1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f875cef31e380869030055a9f0d126bdf9aa850f2823417ce2357b06258f44. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:41Z), 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/ITRZE1902307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118e0cdb7baa392d2eaef5cb7fced45a08ac8c1af84f1fe07cc698cce494200. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITRZE1902310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2036377971a9c9ac7f5ab788cb9a57796515c973cd20eacf790b1d337a81ee. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/IT0QQ2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc141b1fbf9f44ea1c23a8407488cad2194c6824711e2956e9858b0d26192c08f. 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/ITCP81800074.