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 0xae292272f4026096cce3803a3ebbc2894d9c8cc43233b328a7bde4736cbffc38. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da08ab88-6d96-4eb5-9a4b-da4db3a34085.json and https://artists.proofprofile.net/proofs/artist/da08ab88-6d96-4eb5-9a4b-da4db3a34085.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 0x820fcf6e17d1b673be8bb16e736ea5a8c4b430dda8dc9b505fccc64e08f2073d. 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/ARF412100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d4eef3b8b926d8140cc77f2035aa1be8dac2df647812f26eac4337275ca72f. 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/ARF410500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eebbad85c9e1f5c8307c9ec1b3d0b168693094c80716b3d4f7cb4ea1e298b78. 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/ARF410600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335fdfa36c488fe86f8765221a99ff83ec62b80784bce703529d4f0801757989. 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/ARF410500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851f0469d5e9c154bf2db04ad8b39fe139ca997ef2a15a68c44286ded9be5c6a. 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/ARF410600526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae13f6fb40741bd052b81ed4daadd8abe6e18ee4e666b29d8a142a1d96ab61. 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/ARF410091118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d93b945c0b9ec78ba6405c3c8f28101275747dd012fa02ebaeac727d4d869e. 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/ARF410091134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea9b3a5c781f6f20d433942e249e1438d2e3b42a4979015e05cef9776929461. 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/ARF412200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8f38802e3fee1f28d1c9ab1b9c0e161da9e2c17d44e341142bee9978b31c48. 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/ARF411300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a49e6d7f83d9918a8f35d15d1c59b1149a7a83c6ffbd487cc752a9b984bd94. 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/ARF412200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335fdfa36c488fe86f8765221a99ff83ec62b80784bce703529d4f0801757989. 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/ARF410500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851f0469d5e9c154bf2db04ad8b39fe139ca997ef2a15a68c44286ded9be5c6a. 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/ARF410600526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed382eb105cb42f9d75a437629d2a03c8779e05cbda7ff228518c91e89e3ee9a. 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/ARF412200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eebbad85c9e1f5c8307c9ec1b3d0b168693094c80716b3d4f7cb4ea1e298b78. 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/ARF410600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335fdfa36c488fe86f8765221a99ff83ec62b80784bce703529d4f0801757989. 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/ARF410500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8f38802e3fee1f28d1c9ab1b9c0e161da9e2c17d44e341142bee9978b31c48. 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/ARF411300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8f38802e3fee1f28d1c9ab1b9c0e161da9e2c17d44e341142bee9978b31c48. 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/ARF411300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c53c904989deefc5ffea562f2af1adaf6a7b0d8345368ffe72f1c5eaf1da1. 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/ARF411400472.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820fcf6e17d1b673be8bb16e736ea5a8c4b430dda8dc9b505fccc64e08f2073d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:03:31Z), 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/ARF412100167.