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 0x90c9847abc5446376afa3ee846e2ecf4c1a1e9488ca50ec3fd83b48efe3a7852. 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/bd76476e-5560-49ea-9089-6dbd3db6bce3.json and https://artists.proofprofile.net/proofs/artist/bd76476e-5560-49ea-9089-6dbd3db6bce3.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 0x283967486b2914ca53114e2cf56395c8fa5e145e11de118424465948bb8ed07d. 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/QZTRX2121696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cba46ea973219234ba8f2fc274dcbcc4ade607976d71bc4595d223c3e7e718. 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/QZTRX2121698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72a75a17832593b96c154fd432ef10b5d67162c57827dba00dd0b79cab56a3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTRX2121769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fdd6f1943c314dfb32a5d41d3b61708151a894876d0528306e93d7fae1cca3. 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/QZTRX2121770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb87ed0df4b4709d700998bd19f35a75a52288a2b04b17d2c8c67172f893557. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTRX2121775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c771e50cc14afac6fc69f186b044c59acedac185d44f00d1445355f5ddff60. 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/QZTRX2121776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d49eeb28b92950b27ba79160c31767de3727772465a6407235a120bf89b154. 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/QZTRX2121784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8d3af5dab55efbc3b96eeea84dc0ee3dafd81d1afe04a389f976b9b895831d. 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/QZTRX2121786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88f1282944c788f5dd4973f6504607c9474db827d13320ce5a4eb76ab0206b. 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/BXUV71700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa63726f42602b177050652aceeff8b14c150238b7e17c6583bef24794eaf72. 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/QZTRX2121800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5faf7cb9508573ad0663bd90a10a7dfb369407134ca9bf20c5abd7414cf43a. 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/BRF2G2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd2c80bdce158800953cf4bdae8eb94796cd672e316de70bdc79fac7374a82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHO2342853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a94dcea396ea3b3cf3b2f9cdfb74e2a2ebdd0fbfb6d01478f5d880ec0562438. 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/BRF2G2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81266856892e18bacab2c58d0009414119d505ca92e0e747f4f41fe8cdbda421. 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/BRF2G1800609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ff0611062204b05b6e27beed26a2d68bb7a2ce9c64eb2cf63a307c7de1c58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRF2G1800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfc7ac38c3b96b5ed8db90e5a9b29cae871d80bd811483f71379069f33cefe1. 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/QZTRX2119506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb388dcafee2d073810e94e40969a8380d93d55e31a2ea0525133fb8bd5b70276. 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/QZTRX2119440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e7d871f97491f365bdeb5af13067781e9e1a9709c300b3ff9f5775a2db1dd4. 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/QZTRX2119447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62c84cb4a78b391e515464f0231140b51c3137ea828f1b10874864168defa5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:51:23Z), 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/QZTRX2119418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb1b773faf84c1ad04aa85edb1f785dcf43c8e6be77c8bb6dbb80e34405af2d. 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/TCAIN2430671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176b61a50e3d16ac2ab16aafc05f0e6410023b29031152fb46289dc1ec336b42. 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/TCAIN2401448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118cd1463e7b76eb48420561d4075f46074c3ead76d2dc29d7c741af9d39093. 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/BXUV71700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130910f470d98e4b7fb74a0816383dbaa84cceedf41714c9315ea6afe8466b7c. 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/TCAIN2429865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56c0fcf16c6f4f1e2b16e918511ea14c85b9a341d29a5592c09ba666e95a784. 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/TCAIO2429992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c010b027fc67c0f441c95c6a166225ece510703b705b2495dd509b2a27343d. 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/TCAIN2430445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3bf3b61e8052a349cce024c985d9d81b16d077848658512c040d59873cb38d. 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/TCAIO2430243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721e47a35cad11e1b16916188c59713a4a10a76a8b5d9eb7769990119db6484d. 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/TCAIO2430776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc97af8fcb7f22a95ee594819afcc960dc6901d74c071820e7e70d40d04e3af8. 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/TCAIN2430928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1bd66affdab9b564616cfd1722a92008b1bc2d8ff87d8458a61bbb013d195. 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/TCAIO2402075.