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 0xc66548a2610399e2e3aeb938407336df82238dc201c4d1d8dfa68b7ca9b38c96. 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/0e1e0c34-29fa-4e84-9e4c-a1df565fe938.json and https://artists.proofprofile.net/proofs/artist/0e1e0c34-29fa-4e84-9e4c-a1df565fe938.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 0xc7fbbbf3ea5965b1fd05c186f91ffd7f42a40bf9fbb6a3ef1d3173dc82ce3bec. 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/ARF411001560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3483df66cf0901b6d94c67259a2d5674f28fc64b7b597037da5591c99310374. 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/ARF411001218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38feda477885a1fa693cf37ec8d29d9fe501def794ac00da0a7eac7b652dd9cf. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:02Z), 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/ARF411900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67901258bbd62248204962b8ec14ed0e1e29e6d7b8103511db843a7c8f54479. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARF412000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9860c8ad95e522fe5828321a68efc456431d5680e3a23a40dbafb05ff494393b. 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/ARF410600523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa1eda0f1af3c8ae6e91ef29258f0dbcf9618e4c495e2ed3a23233916b8fbfd. 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/ARF412200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b2380beacbb5df398396286c16bb7b8cb68f54f5f3f9cdeccdece899a06c0. 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/ARF412000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a61d9b9c124a04d644b45fcdcb0371551824bf8d9fceaa64129c3e7c6295f. 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/ARF411100999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fbbbf3ea5965b1fd05c186f91ffd7f42a40bf9fbb6a3ef1d3173dc82ce3bec. 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/ARF411001560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3483df66cf0901b6d94c67259a2d5674f28fc64b7b597037da5591c99310374. 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/ARF411001218.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72f91fca815da9e8af39c2d8b69c74dff300818fad898a3a9ee644537d78b8. 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/ARF410091116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9860c8ad95e522fe5828321a68efc456431d5680e3a23a40dbafb05ff494393b. 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/ARF410600523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72f91fca815da9e8af39c2d8b69c74dff300818fad898a3a9ee644537d78b8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ARF410091116.
Brazil - The Complete Bossa Nova Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3483df66cf0901b6d94c67259a2d5674f28fc64b7b597037da5591c99310374. 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/ARF411001218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72f91fca815da9e8af39c2d8b69c74dff300818fad898a3a9ee644537d78b8. 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/ARF410091116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07544b5aa0593b03431c9991fbf48829a393592c1063a437c848cf9a20d22d0. 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/ARF412400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9252b9f70a7380ad733439cdd978981471fc129ec5a4a8d3b7a3eec752e66777. 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/ARF412200417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9860c8ad95e522fe5828321a68efc456431d5680e3a23a40dbafb05ff494393b. 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/ARF410600523.