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 0x65b10508224b70e2e39af3368eaf49b643eb7364a21f29722bedd13c024e5e7c. 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/afe6a598-18ec-4548-b0f9-529c50091a71.json and https://artists.proofprofile.net/proofs/artist/afe6a598-18ec-4548-b0f9-529c50091a71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Splendid Jubilant New Year-The Collection of Chinese Festival Music
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 0x04f5adc57ed9ad7e78cd9423da6342d2f5bf5930086581ea9fa7e979d13a9861. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWD130000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b5e6651f82fd680ac18317a7c5c02235c47eae325271916688c5b964ff4ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWD130000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21902bc6ed10c99a43f9458f6b095086747ae00027365deff51405294ee43a35. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TWD130000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cbd21ad858959951ff7c39aa2018472f49d8683ca20aa7a908ead679a6a41e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWD130000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7ad70408ded0c6afb51d97aa2eff18ef3c7b6e9e1d23c1eecc26647fb3dd4. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TWD130000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477193257e22383ed56162000eb736c514916c58a236200db3a1a36cb97c538f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TWD130000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dced40b936eb920776e1c26afdcb70cba9715ac17f10a32a812554b5506acfd. 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/TWD130000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b103812ed163065358c79e21e3aff2333224f483865998ac01b9a1f034782a. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:01:20Z), 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/TWD130000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5adc57ed9ad7e78cd9423da6342d2f5bf5930086581ea9fa7e979d13a9861. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWD130000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b5e6651f82fd680ac18317a7c5c02235c47eae325271916688c5b964ff4ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWD130000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21902bc6ed10c99a43f9458f6b095086747ae00027365deff51405294ee43a35. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TWD130000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee1784dde8c2147775f41a44102aaf9977f0be17fc38c1276dab3a86969baa8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWD130000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f19dc6b76fcfb67d874dd0508c09d99c521ba0cf9c88ec32a80f8f86e941ed. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TWD130000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95b66a1a32900020da63ebab7e366e32f0d0edc2553ff64a75003fa6dbcf288. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWD130000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfeb0a860e26cc29ef52a04dfb7efc569ce82cc0c08c25f7f4182ebc532bd1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TWD130000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2958ff831b48f31af8b418231afd46f44965cfef5ca28673bc1091ff876419. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TWD130000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ad7da4fbd9fe11c882a1f4238b8e8a7962f071a0832a54b8b6f72e68241d23. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TWD130000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b103812ed163065358c79e21e3aff2333224f483865998ac01b9a1f034782a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TWD130000015.
Splendid Jubilant New Year-The Collection Of Chinese Festival Music