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 0xd6a859ddc79d635a7c43c677e201f586216d753c0b5416fad9e4b787fb8eaddb. 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/0425003a-122f-4275-97aa-cb88660d5183.json and https://artists.proofprofile.net/proofs/artist/0425003a-122f-4275-97aa-cb88660d5183.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 0x7aa05a39211ac29f52b19b0564105fd8ea4831e8b9bb8f5fe685f4fa70ca3b13. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DEU670200091.
Cuando el Misterio Es Demasiado Impresionante, Es Imposible Desobedecer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bfef41576138eb3dc672531fc71a1f628718c62e4f35504c69cf0eec75cb1a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGJ1781531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910268a725d0eff585695bcb3e4624263912be388e05d170d93c300449e16c18. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGJ1781536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92315b3bd4c37fb9222c1c9a4b3df069887ebc46d343c4fb0542f13ea545b40. 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/USL4R1921704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4be18744e30fad07bf53d4c73c1f8f6a6f33fd912465fe0b4cb7f40aa5c5cb. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USL4R1921705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b9b637851b71877216dc526d14960fab783875e76960f5a51fe340206f490a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4R1921706.
Mientras Más Me Alejo De Ti, Menos Me Importa Cuan Lejos Estoy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e115f125669f5185f923aea280ac81c418169901c898e9dee26b929b77df52. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USL4R1921707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d8e5b2f50304df82446582068ca3a1aa73dc92d0a83e13dc3958aa16f95c7c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USL4R1921708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b0cb56073d172cb8b2caba075f00165856385b0edf0b6261b334e527956af. 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/DEU672500473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a026c21133e01bb2ae5ca0794357c0e98235b6a84066f3dcb9f95bf4907602. 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/ARF030300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4486abc6ce8c1f7ab985742576f7f6ac9c4f5680000119c2420da543631d4651. 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/ARF030300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bed30cbdd98578468ac7d93c2b032c5748ec4ba3d08164fe79610509cd042c. 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/DEU672100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ecf9773a1c802eb4a426491a28716c14bdbcd96187e219cfedd5f9cb71ed4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEU671300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a989b3637f85d5b01cd0dda5aa73586136da4e036f6b09c92ce9be9f46ba97. 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/DEU671300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f91acd61318f3262f43faf449d20b95b5e86a3a9a35a4c7d468150eaa779ee. 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/DEU671400262.