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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb491b8757924a1baa1ad6d0447cd454285148a6b33b972611c3266d78f7ada75. 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/6007f63d-b358-4e0c-bd22-732cb41a6170.json and https://artists.proofprofile.net/proofs/artist/6007f63d-b358-4e0c-bd22-732cb41a6170.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c28b37c3234697235729e4ba30c902727f6bd49156d282364c619dc635ca13. 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/US6WP1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a50b2b7b4347da4d2e0f962022e5cc2be335a62989a9c428ab00244668cfda. 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/US25L2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d51352a850ca319b79c3b018062280c594220b3f83b441a87f5469224a7d46. 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/US6WP2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73686c7f38f815cfe46deb54aae473f310100bb336849c3d3d70dda5fa513187. 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/US6WP2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9af82641bb104f46f25397afdcafd5680f0fd1988dd7f8afc4b196682fea76. 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/US6WP2300286.
Cristo Me Ha Sanado - Chapel Sessions en Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ffbb7cdf12c55853accefa786d46e9ae749a550a2f425ef27539d61b1b3eb6. 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/US6WP2400052.
Has Sido Bueno - Chapel Sessions en Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b90e705e7c7e63abb5e2a0e6910044ad715bdff155366d027344aa4bc8ce32. 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/US6WP2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d51352a850ca319b79c3b018062280c594220b3f83b441a87f5469224a7d46. 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/US6WP2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e791c8a9093f6bbc69edfcd1d87cc66b8b25204592ebdbee26139ea042204c. 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/QM3DF2204894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d51352a850ca319b79c3b018062280c594220b3f83b441a87f5469224a7d46. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US6WP2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c28b37c3234697235729e4ba30c902727f6bd49156d282364c619dc635ca13. 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/US6WP1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f1ab0171c56179f327509d3bf114d38f6f29e7deb0ade1db8fde9a4e13504. 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/US6WP2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c419a6835e4a6b6c2a871411b9241f624a299874282109c7c1930ac22b81f42. 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/US6WP2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a50b2b7b4347da4d2e0f962022e5cc2be335a62989a9c428ab00244668cfda. 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/US25L2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a50b2b7b4347da4d2e0f962022e5cc2be335a62989a9c428ab00244668cfda. 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/US25L2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8514e2da2f494bd114663c07810dc8bae9224971145222484b751024de42ac7. 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/US6WP2500086.