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 0x2d72797a39bcfeceda81795fa23af22cc789396d431b96a7d4116405cd7a87e1. 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/bd4c0a07-5ca9-48f2-b395-5cf18e7c8e51.json and https://artists.proofprofile.net/proofs/artist/bd4c0a07-5ca9-48f2-b395-5cf18e7c8e51.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 0x577081aeccff0eb9151d26f10ef11ef696fbbd4c9a3b9f019d546f85a8f8c1f3. 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/SE6TI2021562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80465047b0986bf1615114a7d55baef29d508efc0a25f8c72271e421f2a3361. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE5752139652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a946d7cb6654baaa17823e283a402d36b4e69f95adafa14c3c4c340c2fda3c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2135768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceb4db0ce9d1c92f10edc2b300ccf14242642763847113173c32df12082b68d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:17Z), 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/SE6HN2181540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a2645acd41b5ab75734c9102e61d61f1b73092c8455e74b8f84cd9387be40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6I32106781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8753f9a7f7b1a2c0a5cd1ed3cc523bdbc0ed32166675545381faec92896f6cec. 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/SE6QE2134514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c78ba1c0c54cecf2bd5f8fb54dd963f90f6bba9f8c29a39ffd6a1284afd75f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6SA2150986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f79d0285704c05c52727a729646437b7d9d390d2478472a56845d6b3ad7af4. 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/SE5BU2204724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91489333646d1584df1deebb33f714e924c188df7e5ca4492c5896819ba22057. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE5BU2255787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd12ce5d495cf190cf4dafabacd092b7955aa23acc09f10c011d42ccf388a67. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE5BU2207319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd12ce5d495cf190cf4dafabacd092b7955aa23acc09f10c011d42ccf388a67. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:27Z), 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/SE5BU2207319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0b4ab3b6a688b6c0e740fc779526e0b862e2d427a70f4dc5adbd25222dd6b3. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/SE5752203206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5624d873becc7e4b6a45af82169504dd8cd6f113f9e9026b7b9074279f1dc. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/SE5752283871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903bdbe11bf5a0dbfbe57e19b3ce2320260c2b0ca5c1665a0db27ca1ac986c8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:04:19Z), 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/SE5752297377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c07cdf1903bdc66c8727a40338bc219fae0055ed32761650ad9da7a955b762. 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/SE6QE2204745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedb87efb3a0c09775be0fca8fff7855e58d8deee3cecd602809a883b7cababa. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:07:01Z), 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/SE6SA2206473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0a61f9ebfff9599b4df89db091f96c63e3625ff1c58b2f9b950d6b876ecf98. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:47:03Z), 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/SE6XY2250096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2843f9c0d4618e198dc4b6c7ceb13c7d4d99aa969fbfe3c05ac4f63f2dfa668. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/SE6XW2230167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb11c19110e0eeb335fed0e7f91a67b2426e83cadeb46ff5f2d6753885cca0b0. 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/SE6XW2340752.