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 0x47cca0aa3890058fce6c9122d5deeaac81a1e616ea8912b1f197279b28df0d1b. 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/ee4c6381-3432-4a8c-bb45-03fec0516af8.json and https://artists.proofprofile.net/proofs/artist/ee4c6381-3432-4a8c-bb45-03fec0516af8.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 0xa14146eaa3987a85f4a5469435a6f14a7782302fc1585132fe7250d3e8c714c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF550806704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb9bc72d3aa9f32319ecb590359c7d0ad41d7b9e1d45e85a529dcb34c31aaaf. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:51Z), 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/MXF550806689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d7b1039434eaa7e0d7776ed56c94e5db8d2e2cbf7d24936809617959579c2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MXF550806705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92107ea822f779c6ef9c08e708ff51211f5c7891c4d212fe76c284449514b93c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:56Z), 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/MXF550806696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb3abb4b30e7515b62fa365edc7c96747f4d4c779ba5daa2ed2099bba1cc003. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/MXF550806687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7b2ae6d4e71f0b0392157f6c3d4c468d52b47e54b2078ccd22a956c89cccd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MXF550806694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbab9411378e77d74148a8c3f208fbfced8f7f9d915e4157a2f38e6955f9d47e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/MXF550806692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95823885149b957bdc7b557741b25e38b048e6633d78c206d4cd9dea15c00967. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF550806703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a6363b4d730ab1dcc6fc9051cee9f914e991aabf5bd859ae148750bc980346. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:24:06Z), 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/MXF550806697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7025460f90452749de22f5206c225eeab401614afda37d8c3fc7d39765499515. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXF550806695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd181305b35a49ad6b5a4111180a8814c80a4fe5203966029907dca3b74a9531. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/MXF550806690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9accfa472e8bc591015506347e2f78b85eea51acf3e243f01b6139a5ad34bf7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXF550806701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf44751ad4cab6d9eab4739e78e41d53f9cd20d5a9f9093351185241c17cee3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXF550807218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f79a602286e6de8489a7a40173995c8eccbf41fd985b8e7afe024d98c2767. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF550807216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7d4c0eb9d3398cdec45bda80cae9251cd4830850b3404522fecae7460b356f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF550807212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4dc0c48dcc4c3d43ed5d85a167376a57551132f021b66bced8c5743abdb985. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF550807215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc832329af59b87375ab9e44e54f2d82ce4685a15c11e79e83c58a2e865128c9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:41Z), 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/MXF550807220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83435c9bde38da778e486aa6224949a92264ca55aaf50de7d4444e2865c779b8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF550807211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f31e7a3e55e035ee15bedd7429aed1aadcc49e248f93a04c2918470da7c2b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF550807227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2412dd0a467ae4dd1b7c0ea20f81616b33e6ae9439b2c74a49522241a8f67e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/MXF550807214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0333d1564a04ef8e7069c87baa69d6e01ce7590665a3402801796fa7b7fc238. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/MXF550807223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d4600f7081c5487b8128684842e13a84d175ebdebf37ba10ff4a93b5393aa3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXF550807225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76765290e66d971626b4c40290992152b660bc5768c934e54ce4b449f0cc903a. 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/MXF550807219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7ca4e4a03d5f1a27a5a343ee7b2314bb099ade803324a4468df4847184b0df. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/MXF550807221.