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 0x456a9806a9e535ebc2e37d0e40faab8ac9940205c9380e9f7ab7343d8902bdff. 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/b059ba38-ac73-4c70-b230-5d790f3a5a26.json and https://artists.proofprofile.net/proofs/artist/b059ba38-ac73-4c70-b230-5d790f3a5a26.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 0x77af0acea763ddb7f2c71b1f4376c5d1e7651f4967cb50ee8c85739e55476ca9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HKG881600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1ddf3f3309df654dc38cec15f0804c84243584b81ea7a05840ecc85b5481a4. 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/HKG881600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407053f87da41709824b7cbb798ee47c963629a0c1b13a93b788f8a1e0e2f0a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HKG881800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1680fce937a33997fdbb3f0700bf2b2091d61bd13aa16d0440ed44be8b8299be. 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/HKG881900001.
華麗上班族 「最後的華爾滋」 (澳門百老匯紀念版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabb3c6fa6995e1bf560bffb20130d405be6606bec9840c6208bbf9c8f8f8f9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG881900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732a88a9cd560af17f6d6547aff0615455d397e5ae94880c335bd90efbe88ca. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/HKG881900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732a88a9cd560af17f6d6547aff0615455d397e5ae94880c335bd90efbe88ca. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HKG881900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7c87acbca15a78d3ffa3f52fe696eca826b2661cb04171759a7221f5adc7ad. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/HKG881900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e83f6cef1d6b8c9df2c0223bb069a78b79d1ff5a57b1be9616d214abf78064. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG881900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1211c4926367a23c9472381db8d9187594304acca8672f759199859e8ed777a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKG882000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a474ae9d0f4ac617e95984a879a0e14ce385c7c4b4aa0d5be76a801863c7e3e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:54Z), 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/HKG882000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506df23d345427a36dc5f739c52080a4367df44773988ff3f7cea786397ad91. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/HKG882000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd145fe3e42464a379ccc5a85a6b6f3cfdc5ca5b7b745617bf574ae82baeeb13. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HKG882000024.
華麗上班族 「最後的華爾滋」 (伊館現場版) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e9c5ee3293b1cf79248d7cc3a2f43ec2e8113833106ed300e34c56fd54eddd. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/HKG882000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb0b5920d7df579accf03171f74cb98517c80326f9244ed376b3d15fc75f16. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKG882000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302360016fced6fec14604caa7c658c3aa50c5705549d1d1eba0a84cbff6d45. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/HKG882200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1926c94ccfc6ad56bb33c6a8555d0cfdc1c61d2523ebc9fe2d9abec1bdbf70d7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/HKG882200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215a3303bae98f80c2c5432768c9cfb79f284fb94da23a4db2e514b04c900371. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKG882200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a00eb0fecc7bc12f68e676046173805f419ffdb3879c8b281d636238742082. 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/HKG882200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b31e37b8ca82e5b5e7a5ef1d876a39c6e96f42773216fecc286834d89c84292. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:09Z), 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/HKG882200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9038c38d3c71cf7f7a28501afb2ca4f7c7a3b603d7bf561a81601bff5bba79. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:51:19Z), 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/HKG882200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc243f9d16827a713db97e95ef62a2bff7c6ad8630348134a5ca0c94cdd853f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:43Z), 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/HKG882200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557ae5a4db921a0d40e3fc3191d4026d0242c65663aca8d0cbcdd23fcd7ed559. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:23:30Z), 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/HKG882200038.