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 0x4de8d647dd2c73f8246f050abc6d6b8076e0405301c386d2952f22b3c838f51c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5290a649-c4d6-4e08-8c70-3c54d4dad1cb.json and https://artists.proofprofile.net/proofs/artist/5290a649-c4d6-4e08-8c70-3c54d4dad1cb.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 0xc575bc0d8c49315d4459d8399379f6c269b92dbf08b680e7ae1a840da54b0d01. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AUUM71700734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4379bb992f12f3d59222136b6460da55f1ecbf76c2f571443409a1d5d971a1e2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUUM71900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dancing Queen / Girls Just Want To Have Fun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9cea10548d04718e63f03f4d658127312b0157523fa120c2702760baee24b8. 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/AUUM72100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8620212782fdfe95be41b6e27621c99ecc4f1e53316e0c6b207074639d5d1. 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/AUUM72200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc3f3f5231c28b976d158eb2dd7c89be72cecf2404d28b18b70d91110c673ca. 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/AUUM72200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8620212782fdfe95be41b6e27621c99ecc4f1e53316e0c6b207074639d5d1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUUM72200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5481c7bf871a9927340a88d6d03320b83a37550660b8a714ab960a78ae0c96. 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/AUUM72200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99edf1f340783b2e9190e4dac0ffe9332311fd0a54eb4d0023d5b0cf90f1a81. 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/AU2DY2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a096f4041180f778ff9547efd101caec4b168c5f7ae592edc9aceccaea3f93. 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/AUUM71900454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad61ff23ecbf06ad2cddef439afdc4709af7c9a4825ce9f8106aef263716b9c. 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/AUWA01900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80f6f9e92ac5750adc30a9ec2f040d1aaed8602e06428afe63aee6210cbcb3e. 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/AUWA01900573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad61ff23ecbf06ad2cddef439afdc4709af7c9a4825ce9f8106aef263716b9c. 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/AUWA01900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae7c41cd6f1c51c261988a24692707f85122012d5c65dfee91d65708edb43f. 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/AUUM72100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccfe8ba9d15427aa982b8c9cdb86b0a418b783de20c9169bfd1375162b73276. 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/AUUM72000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae7c41cd6f1c51c261988a24692707f85122012d5c65dfee91d65708edb43f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/AUUM72100216.