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 0xd50dbb20d290e93694985cb78e276404a70ea8295b49638a3da55bd81a227739. 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/e1eb9d68-f7dc-4843-833c-25520fddc366.json and https://artists.proofprofile.net/proofs/artist/e1eb9d68-f7dc-4843-833c-25520fddc366.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 0xb03d65cc1742a8eac69116cfa9bcd1fac61b0fc68b0e00881fe450d943d06bb6. 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/GBCTA0200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246fdc1a68f3febfd73ab24136896c6af7797f96436c0ed1b1459e6431e4239. 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/GBCTA0200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1449258019c54897d6a586abd33c359cfb5d43c26442f2acf35abb27dd165d8e. 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/GBCTA0200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6d3e957d9c48e37efe703024a3a9af846a8dda56dd72d90fbd6fc89c047dba. 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/GBCTA0200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c6a6c36b35e97f6ba376a6e330371513a625a72260aedb91cd900938047cab. 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/GBCTA0200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25554ead04f3ca6afbf0b67692af22828de9286405ee46247269a0b4feebd5c. 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/GBCTA0200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b97c24392af3d9939dab770d9e53cdfb00ec4c81e1cc697a897a83cef6c775. 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/GBCTA0200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe799cd496339b01b033a0bd722e85f06c294e65fe68882b21455cc2085bebc1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCTA0200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7c6283fc1b11a5821733e2a2a65f712fe0d44bf0be17bddddafc1d2c02483a. 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/GBCTA0200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306da7b65974378eb1c7d5c6cd2b7c58d19d9663fff0ed499911aaf1f3464e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCTA0200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f7caa0a328dec4fe2dc1e70475b1094931382df49c91d60ed33acd51af98b. 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/GBCTA0200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b8d6215dcabee698da2b11344dc972cf8c3fef4cbed586fc5c0b06b5f68fef. 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/GBCTA0200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b973e5fbcf1162cae65c5b9dff8a187ff0f9eb301820e708e773c524c4f831. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCTA0200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae27d0a277054bcf9d0f691eb0295b50df6b706e54287ac85ea98add6a005a19. 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/USUMG9900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f08d40d4abd60a2b2b0bede9765da0d58e7ca0530a3cb8cca1481b70b990483. 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/GBF088200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b494ecc25354875b254bdff3d33a82d8f52eafedbfa557964d1e5f683586e7. 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/USMR19787401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18ae99943fde88db49be9489b422f079905c44fd5ae4971feeee1f6a228ca5. 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/USMC15848998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efbd9e3235c4b7ed93c1bd0f383c7c962141e54034644825d0667771bf8331b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USPR36806018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd623f7582bf459eea6d72bec5f1cdd75585127cde45cb38bd16f151c01c8de7c. 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/USUR19915009.
It May Be Winter Outside (But In My Heart It's Spring)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca9aa7d3bedc17fbee7ed4ce89750a4b0147df4f7300b9ef636d0fa81ba4f2e. 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/USIR20300487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b1358a61c64742de92b1d6a57553f6881878f4c50ae5844c213408fe620a27. 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/GBALS0000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b3166fe7c2d8082e6cee1ccf9b557ba594079e5ec95a6d72b224043e53b11. 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/GBUM70706319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d67bf7bc71d1004d75bb228076ae3fe8c0b395577c8a6a784fb250cb24ca52. 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/USUR10000983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a594f42629eceb57ea067a6efe7b2e229c8fda5ec4799dba122bf373c508452. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCTA0200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e76444ec2c593b15b378b46465d2c4433706dae04219d809e05e36b73accc9. 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/GBCVL0000023.