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 0xf70a0ed5b28fe9b263ed35c547cabf7ab039768a630e68817e6faefba9c03f53. 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/cf499f94-1ba0-465a-a713-859309ca606f.json and https://artists.proofprofile.net/proofs/artist/cf499f94-1ba0-465a-a713-859309ca606f.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 0x3b15277173725e17839e0f8d49b75d6b4a8db56fa7f89e45fdfe8d877fa8a9b7. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:49Z), 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/GBBBN8400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a44acc98c0ade1104259b56e0acb5cbc1c611984f8027b03c608df2acb3f9aa. 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/GBBBN8400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6453e94dbe5148694a0ce27234dc5d50f23b0b398760ac8f673916b084f870f2. 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/GBBBN8500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474972fcbc40807bd422ee1415391fd8386b37dbf8e2cc8304ad3ba343fdd2f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBBBN8502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa39296e336987e186811d439c21b4c9d824ab34b168739d7de59e05480a5c. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:01:24Z), 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/GBBBN8500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa39296e336987e186811d439c21b4c9d824ab34b168739d7de59e05480a5c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBBBN8500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50fa15efb1b2898cbc4c95a8af3b14e91946d40d52023af34a7e4ad55b25e1d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:58:13Z), 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/GBBBN8500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7f27ef76566ced8a1be29b52b9eaba33fff1df021efc19a43bbc08b86ddd3. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:09:45Z), 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/GBBBN8400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474972fcbc40807bd422ee1415391fd8386b37dbf8e2cc8304ad3ba343fdd2f. 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/GBBBN8502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474972fcbc40807bd422ee1415391fd8386b37dbf8e2cc8304ad3ba343fdd2f. 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/GBBBN8502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50fa15efb1b2898cbc4c95a8af3b14e91946d40d52023af34a7e4ad55b25e1d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBBBN8500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBBN8400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7e31cb40dcea4ed1025eac6709b39ecd86600751b8deeefdb549a0f36d9. 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/GBBBN8400002.