Compact as used in politics may refer broadly to a pact or treaty; in more specific cases it may refer to: Interstate compact, a type of agreement used by U.S. states Blood compact, an ancient ritua
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c27f85acbafe710dff2d38530405ab3533ce5084799da77f679a5bbe5d39e. 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/c4fe5f42-07b2-4d3b-9949-8c7c69570e39.json and https://artists.proofprofile.net/proofs/artist/c4fe5f42-07b2-4d3b-9949-8c7c69570e39.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e6f9e829baeecef148abc6990a03eba1c54af3d61ac75854e01b24732588c. 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/ROROT0626101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d418517d9f19b575d2d1aa74b48b215c0b48e9afdfabe5ad88dedaa0ac12cbe. 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/ROROT0626102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a8944c58a589ef7e409391217f5fcea186373dfdecf6543aca544860ddf499. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ROROT0626103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb8417868ca665ab03ccd5335e31ce7f054e564ed6d6144d474f15697061804. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ROROT0626106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7de04d71069ad32122410a9682edfb367ef4282c8065befd97e29f79541579. 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/ROROT0626108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc698b58a4c8a24d39e375366166b769b368a81dd570b35ad0ea96b107aee130. 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/ROROT1318009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cc0d63f59c4acaca78bac922d1f40efb3c03b82be45841fd7d27bef6216830. 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/ROROT1318003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d2a1c99fcc570aa4d340baca17fc8fc1b7ab5b95d0238e8b1924dd8e813dc. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/ROROT1318016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8fd276046dbab41edeee68d6c4fa9ff3d509ecd57a4ddd2be0d29df6590395. 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/ROROT1318017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0acab4e9b15b6c6a994f02fad190d6e32c6e90f0ba71b6c7e548f88cb938aed. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ROMSA0600802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8647964ffd3739cc7dfa1807a27575cc16c1cd13ab8f288217a669f947f5069b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ROMSA0600722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af1c74adf1217f43bdaa25d82f1eebfe86e5723c4b473edd28f98d578a25245. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ROMSA0600720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05968a663fc779fd9562509116f289a06c080b6a18237ccf0cf0deb233de58ec. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ROMSA0600719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08020d85ac8a2f6b7319e8b8b0ac6ce1121c571146b22a41bca92f0618154284. 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/ROMSA0600716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2725c9dfafdfc920922e5095691b371d4db3f2df83419048f0208bcea8c3ccf8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ROROT1318006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a1de5b0b69a86ce289013840f3c5e1cb4b6f63283b22751a86fd7cb77c7b81. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ROCMA1510605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d52a7411854b06ce00618288ffecc82548a8e81ec22dfb3ec48101e62b472c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/ROCRP1805056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9ba34840ad804d2ae0b1fe38cbc605f35c16577ae38cec3b9c88e800041f85. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ROB010804469.