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 0x5df7199aa6a481afec8e1289a7a572cb2ff0499867d5e03fe978695df8c993ba. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbd51957-6d86-45fc-a91f-c825edbedc66.json and https://artists.proofprofile.net/proofs/artist/dbd51957-6d86-45fc-a91f-c825edbedc66.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 0x397338f1b38d321662ae0b49e1191ab805533b60465734aeae3e27c4b1c6fdaf. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR59R2319549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3369fcd20a742335c524ca06feb6bddba4e3bddaa80e61fa3427878382366d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR59R2319558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d8cbfdbd66e8c1a71195de38f0d99324d920eebb71b9cbc2f90805f9495ca3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/FR59R2319550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370cdd04ac3bd7c3c94ad68d903fbc745cfd425f821015962865210cc3cc41b5. 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/FR59R2319559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b6e7ee011bbcfb959cad09af2490c9401c7ec2e44c2503d207f8fdcdbfaaa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR59R2319551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca0aff54259be98c5dd7bd3bbf1f246fc7b697adf9093147452fdd7ac3bb05. 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/FR59R2319560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730f1f1e465b98a3cdd2eafe4561c04b22d1995dacc288816a7ad615b116901b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR59R2319552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cdefe10f4ad9364752d7bb0573944cba16fef41f7ac2b4090362c738670148. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:39:36Z), 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/FR59R2319561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27961e9d264310dea5c00b184b459e7f3fade4b64440fcc75f7a9165de06da63. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR59R2319563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf883ff21d2dbfc98d7e1fa8075b1f093b2dcc8ff2d915bcc87dbf2c14f0b2004. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR59R2319553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa33dfe70842c59e08cb047f65dbddc31848fe60c8be1b96b47b92c14e4bc85. 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/FR59R2319554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e022f4d3c3c26ecf11d3c62404fbd062d4afd75f723ed2ca919b01fec472f4a. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:46:59Z), 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/FR59R2319564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6609c3d21e6eaa9c75fa4bb9bc4502d582e9baaa555456ff8abd201d39ea9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:02:57Z), 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/FR59R2319565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4274736e62d1ffe81761b43239c3c35162260df99d7db1e7b03290a09076da2. 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/FR59R2319555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41643444c8c917adb00ff79f7bdbb6afbe3d62d10a3c67166e51c772c367738. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:57:54Z), 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/FR59R2319566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83538f141730c84e91241be61ba290012c86b8c186dfbe80ed4cf3c22c6b0e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2319556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944f31bdec5ecb29f9a127916adbf6a6eb1adf3606098a0683ad85dcaedd5a0e. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:59:56Z), 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/FR59R2319557.