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 0xcb29244567d14eb1e13cb391ef57ba6d50c85b6c19dcce9f6d72b6012641d945. 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/b11e700c-2cef-4735-b94c-713ed0478966.json and https://artists.proofprofile.net/proofs/artist/b11e700c-2cef-4735-b94c-713ed0478966.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 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 0xbce2ce6f5d3beeb81390a852b5110d15a800fe6d23cec5badbe549a35f5a88b0. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/US83Z2484608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755ba5e70ab86ef3f2f51601709749b8c9021c296bde75ff99c96bf2a93f32c9. 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/US83Z2461176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe3e7ffa76dea1313dde4ac249895608bf886d5f542541eeb0089fd0ec8050c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z2466900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d852b8302da798107a28ef3f60be796b71956daf695e7d146cf1525fd8c27. 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/US83Z2321023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573fcca0bcc5c97c86c73053b101774100e5e5b932fdc0123cc8cd1c144b345e. 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/DEH741913151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8564ff89fdb77994b4e28dfd9ea2eaf1bcdc22f878a5939e9e89cecc913a91. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US83Z2215868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c68fec8ed9bb56ffe8c152455b65c9a3fa98199f20c895814ecb64a7cc865c. 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/US83Z2461249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93ee97bfe25a325665a093a010a812f753d77730aa6dfbcb21a7614de8e2a8. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/US83Z2309887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ae9ca6c2abbee8d849463ce34fa5abbb8adfd5090a11a1534d40d23de9f71c. 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/US83Z2483498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d81a53758b666aa3f84d1cf76f3c974e74d2656645d93c1c3a0f705d79b308. 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/US83Z2492206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca58170e72b8d14e5bdbf0ece2273c38108d6b20b23062a019b0d9497a60465. 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/GBKQU2472034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce2ce6f5d3beeb81390a852b5110d15a800fe6d23cec5badbe549a35f5a88b0. 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/US83Z2484608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd27eaff1d05d6febe054ea2938aae8215bbe95abddb4a0f819adea3834e84c. 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/GBKQU2446284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc50734891b9aed94efc25f872162f68e94022756f269771f366ccd4aaa9d7b8. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBKQU2446285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755ba5e70ab86ef3f2f51601709749b8c9021c296bde75ff99c96bf2a93f32c9. 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/US83Z2461176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6535c590358edacba6b9ec2897c096ce1a0339b217d31519945bfe7a238f790e. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/US83Z2461177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe3e7ffa76dea1313dde4ac249895608bf886d5f542541eeb0089fd0ec8050c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US83Z2466900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c68fec8ed9bb56ffe8c152455b65c9a3fa98199f20c895814ecb64a7cc865c. 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/US83Z2461249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235b5d7e9ef74b4d7f477d1babb241ce3ded7363198bafc30eabb62f0afe981. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2462875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5545ee13c7a6e91f54e16f16c918136b42038e45900089338b9771aef87c69cf. 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/US83Z2333425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0765eb4fe4c4d781a9d73c9c77b50cb3c4e3e24bda705b05dd2cc1e78ccdf03f. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/US83Z2331930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d852b8302da798107a28ef3f60be796b71956daf695e7d146cf1525fd8c27. 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/US83Z2321023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93ee97bfe25a325665a093a010a812f753d77730aa6dfbcb21a7614de8e2a8. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US83Z2309887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803f77b066786f557046bb4cefd795aeb8e36f5a0779843efde7227367787956. 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/US83Z2241478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7148094ac3882bb191ab0936d96b5b21b8a841d101dd9e98e396d25d214ada. 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/US83Z2206687.
Qele Lao - Sona Shahgeldyan - Cut Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8676ef14ec2b5f13965f5f6d9bccbc709b8a2a6188e1e8509430e01ac101cf. 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/US83Z2206686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dce1dae26e96ee1b58ce783a071d35835f48a119626817548b34e52d9b81bb. 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/US83Z2108038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4071d6630017decd21ca022ef83ee2407e9115f55ad7e5e218d58bd699ae1. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBKQU2096936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733ee7a166ff101265326c2cabaaddd3edfc978ad1a0ae8555bbb86e0649a55. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBKQU2096937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217fb73d166153d94b0d2221aa2304bef63fc3aed061b676e8ae99e735eb30b4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US83Z2009666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235b5d7e9ef74b4d7f477d1babb241ce3ded7363198bafc30eabb62f0afe981. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2462875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d852b8302da798107a28ef3f60be796b71956daf695e7d146cf1525fd8c27. 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/US83Z2321023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8676ef14ec2b5f13965f5f6d9bccbc709b8a2a6188e1e8509430e01ac101cf. 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/US83Z2206686.