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 0xd63de9676404d94eeee86a42dfbf431c9488a7cc925eee6aca8a9883907e21e3. 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/94db5bbb-0bf6-40d0-bf68-5699f04bf4ea.json and https://artists.proofprofile.net/proofs/artist/94db5bbb-0bf6-40d0-bf68-5699f04bf4ea.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 0x35fc02c4e23a308adaacf71ce22a51fbb42088e95e95ef0de00da91806a87741. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBEUE1300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee760b82e9cbf340aba1c15d80fccfbacab639c9f9271a5cd667e5d225af8b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBEUE1500097.
Tell 'Em (feat. J-Felix) [Starkiller Reimagining]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5229bf6c8cf293e0b5822b63fefea0cc26b40dd26303d0f4ac9213f4d3b479a9. 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/FR96X1915057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5229bf6c8cf293e0b5822b63fefea0cc26b40dd26303d0f4ac9213f4d3b479a9. 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/FR96X1915057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd5799ebe691f920416db7aa33b76ab414ea08fbafa5014e54aa5f018e914ff. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:27Z), 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/FR96X1937958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4557c032817e8c0e03ec51e14a7493a4dd066e6c461a1582011c57525022fd3. 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/FR96X1937959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0675f84f43fbdbebda84f43f61974d3321cbf849496c9367f11be5230e846c90. 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/FR96X1937960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330800be63c264f37a5679ea18d665275747d193e14c77ac60dd97c888c653cb. 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/FR96X1937961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c117b5654987f02555de95962eec1fdb25f0e249f0c2f840a273ce09047d4dc. 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/FR96X1937962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c907af6c97a791f93479ad14d3ed213627c155ea6c631c942cc7955cb422e2. 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/FR96X1937964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1aa9c0125ed015db9c98fda16429ddc467bf09af4cfeef5388c2d4a91fb3f. 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/DELJ81920482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f0e2e6c2d2eef0426899ce5afecead87594633de96ec86aa25fb2ba4d53486. 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/FR96X1937966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99671489ddc62f709e278ef026b6f650cf1c97ec241584d3bf03959a1f310c4. 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/DESY21400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc12aa60e230596148cecfc9f5df0dff0f9bf1226d0412da213804dd138f7f8. 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/FR96X1940383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dc4f70b710c729b179be779e9dceac183382bcfe7abfe4b2022f987c3bd3af. 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/FR96X1940384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883382322b5f0a5ce443bd16106ee22f1b86722507e63ccb08100d6623ae2f9. 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/FR96X1940388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c3fa443bfadf8f2eb8d976aba414d8cd68d547c44593e52d821c228ed886a7. 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/FR96X1940393.