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 0x8ae90c31e27e5907ce84ca218f4f305b0e22f196545fc19009ba2e90137020dd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/743bdfd5-b31c-4223-99b2-f9bcc5dfed08.json and https://artists.proofprofile.net/proofs/artist/743bdfd5-b31c-4223-99b2-f9bcc5dfed08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canine Lullabies - Heartbeat Music Therapy, Vol. 2
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 0x6ecce36fcf80481092757d6edd0c02feed87444f1db535bc87e04f13c45fa2a6. 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/USJ3V1446278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759ce7aba26b58eb41fb8e8b50922c75059600332dfb5e6508a21cd2e9358ed2. 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/USJ3V1446279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c74cf6f1537386bf1f89e0b36aff7d124498533d72873c76b25c0b21fd6cbc9. 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/USJ3V1446280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96981f8396ec1b4d30eb4948e0b5cec1056f01fae377fd6cab3e0d3ccb769202. 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/USJ3V1446281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcb11a6fcc1d429674224aa74848ba397c52fc1cb4fc513ed708e812a63fc3c. 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/USJ3V1446282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782ec8b591af082d9f55a64c9a4c9eed85fa62b167918b6c57ece62878fdb06d. 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/USJ3V1446283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f34524dd6c641db9e0bf11c8179ed4626a21fa57b01dafae0b4e8e6e86317. 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/USJ3V1446284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6f0c7099fe9e6e754b2567037b477694f66da5fe6a60dd008ef49cfce6f80. 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/USJ3V1446285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaf5dd581067aff8b6af18c42b77d4d921edd1cd31eb5d96775b4ddff1bde4e. 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/USJ3V1446286.
Canine Lullabies - Heartbeat Music Therapy, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b3a575e2125b352e164243e9d5bf088b349364197695724acaf3585bc541b1. 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/USJ3V1260530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cf2b515bb58904135a253f3770373c27944b5bd751c5ac63683d0855060b87. 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/USJ3V1260529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f43ca6925f3c239143148ba75ea77159e43ebce9f85c5913535e36a06fed87. 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/USJ3V1260528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed2bed15b4dd823fc6d2ab285e9d7f6bd484ad262df6c3a57c7a186af0e45c. 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/USJ3V1260527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5806d170f367a69791fca059e1382a7e64f5bd71ac9dab7fc7cb1bd51a46aa4d. 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/USJ3V1260526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5026425bcdc5a80929307c0a9ae56f5c4ac084d9bceb92fa084e9c258530d. 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/USJ3V1260531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616bcb8452ddac235a4099caaf2b0f94fabde25ecca84d1e435f08cbf885cc7b. 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/USJ3V1260532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ea6e2837c3ea79700b98519879da1d9f67ecb2efd495e1c6f7d18ab46aa41d. 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/USJ3V1260533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4652044b520688c22295f08aa65b293a641c16d7abc465df43750e02a663d7ce. 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/USJ3V1260534.