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 0x3f8ecc471210efaeea4aaf7ee30341efd51e6fad5156e0301dd9fd0d1ee71c98. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360f5222-afa6-4812-824f-a121648918b3.json and https://artists.proofprofile.net/proofs/artist/360f5222-afa6-4812-824f-a121648918b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weekend (Original Motion Picture Soundtrack)
Tutti per Uma (colonna sonora originale del film)
Runner (Original Motion Picture Soundtrack)
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 0x2b051bb40408126fff1ce9a4e7a8ea12017985b9f98106670ced9a787ce7841b. 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/ITM162316920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c295f5177025eafbb60dedc2c2f65b1bdcf949c391932634e4b81eb52b0d2. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITM162316921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15193aabeae9436f719e73695fd8e013a8e94901f701f5c3a7e92190babd169. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ITM162316922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de91f214f16f5b4ccab57c738ae8541acb1cb822191dde986b1b458cc88bab7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ITM162316923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137ef691dd80bf7fca5c1c712f3fcabb10af0fff47fc6314d314c0d882f7cdc1. 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/ITM162316924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb303425d95be1ce88f8b226bac7acc8649f9346ded398363fc728dd64561bcf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITM162316925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8640f55b551c2f7e7a3e78395d5dcb22917eae82fdd8ce4b68d4cbcbcec9b11. 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/ITM162316926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a784e140460de0c9c27408e5567976746b789a8779d74257d3e76a82364f1. 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/ITM162316927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f54fe57304b06ff8780d06d08efeb17061213d5075ab7ecaa7720c217c9bc4a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITM162316928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234e9e4482176fc8ca68f4e5d67c65289795635fb2c7f3af0eb6b326771275dc. 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/ITM162316929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0376710b2dee8eba08ddfddca09c1d27e05b42b81f89c669b360348cef4a9a87. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ITM162316930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f7b1e397bbb14f995d8328d08bdc3576ba48fc6e512502c3b30712033424eb. 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/ITM162316931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a36ab0d88dafefcad9a4d326fb32c313e8ec2de22856095a8acc1968aaf205. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITM162316932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfada7b6cb5c7a7b1827de323c58aec65cc667b7be9f380948a532988a8f31a12. 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/ITM162316933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730130b8fe67aae980a63fbb78acd4b29d08296a593a9c34840fcb2fabf1a90b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ITM162316934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff0eb9ec2a43adf9d5fd4a89c6f03b423f177146e11ff5e9556cff538a8339. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITM162316935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4390c568d61a1d0a87f68d7cc549c91b3156ea10924f533c190ed607468c29. 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/ITM162316936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ded5b449349ca933ed73aae1430bce0af3cba425b55f151c386b167d57ce3a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ITM162316937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f156bd6bfd2c4bfd54c5bbb027b397900737e8362a92020bec5d43d42ac81a. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ITM162316938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bc37db1240741388730bfe041a4256265c107b2410ef0994581e323f56d552. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITM162316939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce1489268d4f5e10c53f0b48c4ca7720861ee4013c5214d1d69c16fc7b4d28c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ITM162316940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706c8ccf64ffd3d7652fbb9e2ac9c55e1a3480a50968179db2152f5620b4994. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITM162316941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e739b3727845d9c6c1b598e1b21600d8ec18209e91a8f34128f066372711c. 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/ITM162316942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819ae5d88c8647d9d2a887389459af0dbbe84f79af751cb62fd8889bad0910b9. 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/ITM162316943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f94a17e347aed5a8512e99503cffe907fb38c9249159637486eeb0f3a4d9e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITM162316944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a69c3ab99a2e02e00853eb2dc9e90e1246b0a74b428e1187217feef91ac09. 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/ITM161905851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6186378bed56ff8a77906e0f57da9c513e316a6eb9f45a000a10edbe148c0ae. 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/ITM161905855.