1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x198fb689817eb0359983ba72f3752027fdf4271a5fa1597c8561a81cfa2761df. 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/93efac02-3453-403f-88f6-b414bf924e69.json and https://artists.proofprofile.net/proofs/artist/93efac02-3453-403f-88f6-b414bf924e69.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 → block OTSBitcoinBlock must exist at that height 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 0x2c79c518406fd26c4cb4eff5ebc826c5b9f304cdc9fd5b2654abb7417defcff6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLB381600991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9926f09db07644041328a8cacef6d17927de0a4ea675840c7ca9a88124003864. 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/PLB381600993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a402a96d96a6106f52cd3b4e8235c7427833d731e712e07e2d1a99d9c5e70f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLB381500559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8717714cedfb230524aeb416b507afbd7434cd57fa7eab3398e791f74d39e2cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLB381600995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88963bd4d4591c5fdfde57c65d262484e462ebf196b5c60386ec51f4859db8b0. 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/PLB381600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a57b6c43cea1b230b758059241e3f87fe00271e95b7ec60e8d2016332124de2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLB381600948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ef585882b359a68800511e88a515070867ea07ada334bdda784a5a9a4ed04f. 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/PLB381600463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53276afff3d13bfb12e233c50c5b83952ac75a9af03ae06ebeded726949f6b8e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLB381600998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870570381b946d46b0795a8b428ac85db9f1a992278b8009c2b9324058f5982c. 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/PLB381500586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f21902976b4bb6bf0b96e4088c04ea9c811a9728bfc0227539d4db4e7b52af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PL37N2400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fad64b55831d2530072446a62085723555f30f248150b7ec69e6c736ef7147. 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/PL37N2301123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19779c4f00fe1e90a227539ad0438f7a3be7f7c41377e4f4243b0c1b5961f433. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PL37N2128104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79635bc0e2f01b707fa28fd803f45b01dfc37cfc8a3b5cdf6b6fc6226531e70. 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/PL95C2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97861f45e778652a49eeed7bd1abfb1082d157ada23ca177c62f572dd71c793. 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/PLB381600999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ef585882b359a68800511e88a515070867ea07ada334bdda784a5a9a4ed04f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLB381600463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88963bd4d4591c5fdfde57c65d262484e462ebf196b5c60386ec51f4859db8b0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLB381600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870570381b946d46b0795a8b428ac85db9f1a992278b8009c2b9324058f5982c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLB381500586.