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 0x52f27658fa288ef87b36f5791cd1aec0ccb08bec58ea9a530176039b7b18cd53. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7d106f1-57ba-4c0e-9a2f-104a67677e0b.json and https://artists.proofprofile.net/proofs/artist/d7d106f1-57ba-4c0e-9a2f-104a67677e0b.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 0x913580c91c2a22d001ade2266426dafd791a433e0f5aff9e9a7f901ae4ba0192. 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/US3DF2489119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082995107275cae25cf7559a6df197e31c8946599de860f6c13b7f4bb3bf038. 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/QZPJ32350565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e4f6842d80ce401f256f4e05ca79aad5d99235f2bd7fc20cbdb96119ce96f9. 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/QZPJ32343577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d0f9867e76411dce3b0470dc8164134bfa934159903d57bd88bdf4302dd2b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32343566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa8b350332347727a0677a9b2ddac435257f5c340589f955aba3e11d49c0eb. 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/QZPJ32343565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad3216923cf2ec5e45a7b55866c4318dcb0b63bf35bd3f3a8dc625142e3b66. 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/QZPJ32321830.
she's the one i long to spend my lazy mornings with
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa500f936d712daa4b70bdb7386636e2c6674a8ca43793f30c31594fcedf97a33. 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/USANG2446076.
Breezy Dreams : Canzoni From Italy to Tokyo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f8614b5b66a635017aed24eba437b3bcec35952aabe1051fce542aa83148c8. 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/US3DF2518043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf512553d7abc1dad4abb591f4b2526e0649a3ae5fe6b10b0ef8fe8f10b6fe. 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/QM3DF2416613.
four hands sonata with the spirit of trees
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dffa051d7a422b3eb48f087acf51e155a16b5294e525f013196741240e199d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2508525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1922d8bd72025571da21edde43e67f87cfbb7d54afd7f87735bbfe6eb780954e. 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/QM3DF2419877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139b419e2149c1b968280acac20efe7deb18218bd97ed1bb83d0c23d66be308b. 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/QM3DF2421504.
how deep the sea, how far the wonder goes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc74b8c08fb9bb0c2a8ccb6e4f5c24d733526b87f173038ec3b4b9d8a2a901. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USANG2446082.
Ice above and ice below, and I suffer inside