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 0xae16197f117b42ea17c168b8d5555f905a0d4e651c09724a0dfedd051da9c94d. 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/9bb1a0bc-d7cb-4828-8416-8e968597b6ee.json and https://artists.proofprofile.net/proofs/artist/9bb1a0bc-d7cb-4828-8416-8e968597b6ee.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 0xda94535f3390eb284a09d0e6d81b126e895e23f7353439ec44143fb993b75fce. 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/ARF411900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7dbdce873f2150ea0b83607fc43d0648216e9dfb678b64e5f70856773e8e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d680a309523065144cfe705929f16f4db8ac022a53bf3fec1699d5a4c27576. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ARF412400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24983cbdf2a9b3446b06d55dbf7b3104d667fab0c690d036768ddcb098fb0b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF410600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb865276ff77c6bfb8915a72945076b087f3e7101c01ee7d536d833450cbbd3d3. 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/ARF412200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24983cbdf2a9b3446b06d55dbf7b3104d667fab0c690d036768ddcb098fb0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF410600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e588bd7a516cb30038cdb7502de6b24c7691c7fa4eb33256202a457b71336. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF410091117.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e588bd7a516cb30038cdb7502de6b24c7691c7fa4eb33256202a457b71336. 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/ARF410091117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7dbdce873f2150ea0b83607fc43d0648216e9dfb678b64e5f70856773e8e4. 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/ARF412300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8028071256a79fe66ebb49b6bd5679b001b14b7f014e31d2dad2e051d6d3bcde. 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/ARF412400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24983cbdf2a9b3446b06d55dbf7b3104d667fab0c690d036768ddcb098fb0b. 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/ARF410600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94535f3390eb284a09d0e6d81b126e895e23f7353439ec44143fb993b75fce. 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/ARF411900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb3d9495f07022d8d6cd477b24c71eae3fe43e7345d4c92dd3ce750280438d3. 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/QMFMG1507031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de849c7c3682926d0639a23924ac294cee82c65e462ee32829d33134478f82d. 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/ARF411900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de849c7c3682926d0639a23924ac294cee82c65e462ee32829d33134478f82d. 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/ARF411900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e588bd7a516cb30038cdb7502de6b24c7691c7fa4eb33256202a457b71336. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF410091117.