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 0x4c0f2a47d39198bdc5be55564951c2fc35fa023c21c984ba64a53f4affb99073. 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/42ae7afa-73ba-482b-912e-4b996eddbc84.json and https://artists.proofprofile.net/proofs/artist/42ae7afa-73ba-482b-912e-4b996eddbc84.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 0xa6066341c95d9e53636bbdbbeefdbc4f23ea5a768c916f3203a9dd3606046439. 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/FRX452041494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d91d9471392a2b3a96d6a9a5c15628d17647762f939b5e1d338e0d072e19219. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA0Q2345524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111a58857bd21324e5454f2f4a543eaa346bcdd720212f9f4831fa26ac2e2941. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRX762357398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691adb5b029b2d5f91d2e38e34f1f28a5b2a5962bdfbe14d7ccbe7f794d72767. 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/IDA142304047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347d8ae19602da57f3d0220f5d94189a681d621389a67198e26050a87add0238. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX872244699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1618c3eb9a11f20caaae9603e69cc5226c2eeaeba7940d09a6d7df1ebb396b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282322527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76e2f3808cbc7dd8bdf0728754b8f0ab2e8ede8c9f328e507b93ee29b7757b4. 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/FRX282393384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2336ee5de863cb5e03655801a6a71b0d32ca5d6cbf3247fbe77eb61fd90c2256. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DGA052347157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c672f357c00c668673bec4807907ce91a7aebbcdbdfd51ac38da6cd5bc387ad. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DGA082377209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ed0076e9ea3fe148b1b211425bcac69719fa35f2edc96c2c4b8ca05b8f54f3. 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/QZYHM2365252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e61d587b5e894d05a68f368ac3f2b1e192d7d0e1fd212d50f9c97e25711cc2. 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/QZYHM2366827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555e5b98807a2014c6f0c5985915c2e73914641a92e93a82821b44cb2ec22349. 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/QZYHM2366829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5ce549c319230398b3e33f9434465258686c40fc9bd807653a7b101441d1da. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DGA0Q2326254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a1e28d0f3995cf08d1d9bdd72f5253ec55786558b2bd0586bf4dbc407ba451. 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/DGA0R2306536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9695e68c0a221dd46d0d4a6f38069bac5628da0c1761a1b807edb5d2dd702718. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:33Z), 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/FR96X2425551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6f735d4abc0b84dd06cdecac00d40471893a58f3dd83ee555eb29bfc80e28f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0H2484696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d65c931ee01b7894c5aa3674c621701d5ac8768046c10217f7ff22a6612d21c. 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/DGA0Q2488136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc45d0461b449f1b91e5e611202e68750f5c34005638d354e8917b0367e839e4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZN882516137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3584488c1fd442bd0050551200d00092cfbbfd983bca6133efc1956a89a19589. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZN882516159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d4cb70b5dba14de3f5e3acc0f7fa33c8f74d5dd7c636035c844fa6d64359f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42506866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd333316c25ce31007597eced7f334ef45845f296ce35b7ce603bb977247fc9. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/DGA052562129.