A causeway is a track, road or railway on the upper point of an embankment across "a low, or wet place, or piece of water". It can be constructed of earth, masonry, wood, or concrete. One of the earli
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 0x04424d975dd3ec9f13edd76ed8d07edb5ab799d0c324df3bbf2593465735e99a. 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/74e80831-8f2b-4e47-a8ff-6985c5609d19.json and https://artists.proofprofile.net/proofs/artist/74e80831-8f2b-4e47-a8ff-6985c5609d19.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 0xf16df02cfd4fa001a131285f70b32c357a2049e3acc62284a2980c6a06daafa4. 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/QZAKB2013356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c705c262134dbe900d4255cb26b8dc83e8621b98e6291311c5f41ae5444220d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZAKB2166290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16df02cfd4fa001a131285f70b32c357a2049e3acc62284a2980c6a06daafa4. 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/QZAKB2013356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4a667b11f34b398b986d231effe518955a9f6d6e59913a5a8aef8b5ced41e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZAKB2130845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae6f42aecc89b6e857e7364ec960821961e605616e2ab7869c8f484179a1878. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAKB2166293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c442e3bd9c6363c9e1787fda92adac6662d3b303dd1d373fddd14915bd06a7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZAKB2121968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2889b66e29b25a393848ca583f17f88354dac7265e01e0254df3c4d01361354. 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/QZAKB2007298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5ce0e4af337aa53b6e45931c66385d5facbdefca1a7e9b1839cd0604419544. 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/QZAKB2159705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d9a4f5308ce4e8b6b9d4a734a45c228d4d35322237c1a1c5d0ede193cfaad. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZAKB2321300.
Dancing With Shadows - Hardway Bros Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b1487da325ea3059247fc585cc8da13bc6ae02379cc5cbd52a3731ee2ab09. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX2PS2400036.
Dancing With Shadows - Marshall's Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375209475d6210202bdf7bc09116083135dca60038cc4360490f0163f00c00a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX2PS2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0349521db7812d61731313ad394fe506c04c0c1aaf2549c3e73a5dc039cac06. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX2PS2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325ff2cc59e3b5ee399562bd10ce15a02215c1af9e8f53eca5e91f011e5b3daf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX2PS2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad1c758cc06f87470cf44f216f95b125fa77184efd9a4edec844a9056aa416. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX2PS2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335e474f84d674d6600b6bfd46ad6e682711c1ce71e3cbd377beb6f754e86836. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX2PS2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83614a67b94f29011fbb106e7046c07ee1b50eb9762fe3962e4e8084da26b69. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX2PS2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4a667b11f34b398b986d231effe518955a9f6d6e59913a5a8aef8b5ced41e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZAKB2130845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378e21ecd225c7ede17a8abaadd1fb7d15a55e80db8519eb32cea661b2826905. 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/QZAKB2166292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2889b66e29b25a393848ca583f17f88354dac7265e01e0254df3c4d01361354. 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/QZAKB2007298.