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 0xd7e623a6660a6dce2148d7410bb4b09c210ddc6e8016e112162dd50da98d2cfd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6acb6e9d-9127-4f7b-a926-43b9eae94abf.json and https://artists.proofprofile.net/proofs/artist/6acb6e9d-9127-4f7b-a926-43b9eae94abf.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 0xcc3ab931405c14f9dbf73831e53df2473a780078b454cd5ee21b64acb85290c4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472031867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde28be24cc5d9742d0df46a54da4e36c56e28966bf92ac6f127a45f4e91a3665. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGA472031870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c806f3ed99e8a7f7c62653db91e5344dfdc1560e2615affc823bfd92f17c41. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:10:24Z), 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/BGA472031871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd334898e0208531dd0a8cba9faaa2c5a6a4495d1c6612256e74015f2ef32c4da. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472112246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20292859cb5f8cad979e52aaffd75ac327964993db19b5de07bf70f359aa41c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BGA472112247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f239347cc85e85affd7dd4520ec82612df21d9322938ef5dd5f1f493d331023. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BGA472112248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc4eef8cb070309214fa30034402b4a597fff9d06c5a00085927817d04fe9c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BGA472112249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a7d3c81f1cca35b46006a032940e5f1c3754b8b30bd11380d26ee19a79cb67. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BGA472112251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ddf2b261ac3a2cb8ab7c4e3671fd6b1ea4b194851a23525c0002fafeb99c3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BGA472124397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc635aa0fa7877bdba44dd7597b5eafa607925985d5559b63d596dda6f84f8b. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/BGA472124399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ec5fb8b6edbfecdd0b71b8eb4c47f4d1cfee7c84d7796ae61d45476215459. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:46Z), 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/BGA472124400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f77c26b6c4bd4b8657a3780f274266a5a4a2ebe48cf7b7fde2fcfec9945fd4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BGA472124401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c002833b88f1d77ef99f183ba757dda3933808566db2cfd27f5bb451a7f625. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BGA472124404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2729772d66da78e82783d434dbabbb00ef1c2e43aadb213a5e65130539c42238. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:17Z), 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/BGA472124406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c1dcddaa225135f5e5be296535c4626941e64771277b5b9cf7784f69a4a3b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA472124407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ffd0e1027e63f2b8e534a20cf9e7024033f6a0629e2f73a33b3e15d86d4432. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472222880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e92573710d224e84b2d6b820103ba65f11622cd90a434a5774e1a3f423be219. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BGA472222881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d2aebab6ec38dd8865030f2ff1f384aaa3b623000f46ab8ba9756762c7f066. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BGA472222882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c1b71e3189cea39f9fab94a21e303f838dc85fa72665db5a22ceddc6536deb. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:16Z), 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/BGA472339242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0787388d9fec0bab1afe20afeed611643b382965786d80e85fbce1d3ef6c9661. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA472339243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3862cfac6c78ebfb8031b38a8966524341ee047e1adfaa15dd42b76de000280a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BGA472339244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6150b50bba58cfbfb12fe13af66d7d9728b68ca3225e9f66b45a8e6012eef2eb. 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/BGA472339245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae6cd58f77261290946076e9d132686f021a7c8128535a995db42eeea8a64c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BGA472339246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed54fcb3889b756eefeb59b38c91af14da8ed1fa51ee6f106e8e76544ad6b1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/BGA472339247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35993e1f7b82b3841dbf0d87163dbec6510e584010c3cafe4c5fb5cd78491994. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BGA472339248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58a31675f7bbfdf0e1594f403ecf0e5ea04195f383d51ac6d6961f617b61eb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BGA472339249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efbb68530d675b864eec13cd245545fbd603aa3746e9e32d5a04aec162a662f. 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/BGA472503498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eafd55560b0be8b9f8541bc1ec344e6fc2e5f8759e9ed320ee545957bc5978. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA472503502.