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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6d3b90c79ea0f2df742228e4481a2566656ea399916edef7ef9c8546c72d00. 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/cb03220f-2460-401e-8989-bf4ec6f09098.json and https://artists.proofprofile.net/proofs/artist/cb03220f-2460-401e-8989-bf4ec6f09098.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c659a17650938d8269d5e2935f5a3bba9d754cde65f031bbe3c5974a9fd0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX4R52487836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0733e0c5d3180564b165997214e0b4ea40337346ad929a4a3fd8807acbb3c1aa. 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/GX89G2487400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6920d290b3f9d2865bb3c98f320489f81e132256fdd1bc5f4ab9096cbd36bab. 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/GX4R52369026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f90330c3e42508d80717715d817d98ac85aae1430081d725839a581ee5ed6fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX89G2536512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab250189f38a96696af8e8b7bd4029a26cdf21b53267b7494d6655dfad198d. 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/QZDA72565297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecaa586e044ba9c19e24abfa4765483a609d003bf03bb82f05242bbb98f8374. 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/QT3EZ2481891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e192467237d81e765f210c2746af431033bdb60005e3991be46c30525434907. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QT3EZ2442725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0586fdf2b1ce28c57b05d7f49d42a88a735d767dda93c5066e33cbdcf2bb27. 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/QT3EZ2442744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02841da95f913fd833fce1c0474cd28a0193ae35680c84bcb7df4d025b8acc71. 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/GXF972441682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43370101ddf7c0658ce7483a063bb1739d6dd0d5c462c41fc775036aa02ca4c7. 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/GXBDT2450157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128b531e9d322d6fe6bade9f6c884bb11a84c443eef04c7c894ba0eeb6e022df. 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/GXBDT2467660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723414d58e41b84abd539061759f6311e5a3d6c0a291c01e96b78c0c8b30924. 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/GXF972499660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c824a6a826f79cea6a95bc3046d9b86df05a55426ea04ba891cc0b86f10f7. 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/GXBDT2466427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd80ff6c219f51cb8444c42e073f484d56b204b33c1158eb4c2a99d96bad12b3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GXESV2433879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa8aa0278054d7682d610ff78655bd941e5bbc90d0f15976a8f2a3f69a77572. 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/GX5MX2403266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6ddfebcddfae17fd98bc72ecd949b2be53033af8288eb47a8e86f415bd8b79. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX38U2332387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81c0d1761267b687bafd8b3d131b917ed97612b5913d41a30dcf59aadcb74d4. 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/GX4R52321945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62bc7d14e56f843669988f5c902e780201822612a25575e3ba37d33995c9d25. 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/GX8LD2304475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7292b311517380ebf484961653d1f386255eadeb2662320b9b4618b855590b. 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/GX8LD2374809.