thumb|Frontispiece from the 1787 book La matinée libertine, ou, Les momens bien employés ("The Libertine Morning, or, Moments Well Spent") A sex swing (also known as a sling) is a type of harness des
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 0x03257ec3c46f0915a742e90c97852d94f7d94eacf60b9515fdb6ae3910017519. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d616b642-28c9-46ea-930b-107a427204c5.json and https://artists.proofprofile.net/proofs/artist/d616b642-28c9-46ea-930b-107a427204c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grade A Peanut Sauce (Live At Sonic Whip 2022)
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 0xaa6968f21a283053b45bb40c3d4880cd813d6a1a71f128cbea8419cb5400abf2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UK2SX2006121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73240479b73a2e380ae3a7ba15372ede3f60b21540d6b9c4edef512ac6cdb69d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/UK2SX2005151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d35c41b226f550b7374f0501e02d22132295eb75328f85b87e3e98ece43231. 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/UK2SX2005152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b043dc1586b431f8759b57fdb3681b11ad260a8173bd0e7900df46f59056f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UK2SX2005153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb826b4a6c41bda4465df2ae153748697cbdb85402fd5bce13f30225582174d60. 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/UK2SX2005157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fc7930043e5009f6139dbd1066fbd46c02fd7c2ff9bac11ca40c60748d0290. 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/GBHLW2202200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6968f21a283053b45bb40c3d4880cd813d6a1a71f128cbea8419cb5400abf2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/UK2SX2006121.
The Confluence of the Ruak and Mekong Rivers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76cbd5a062f7b2dc1a1930d956e49b7da122fdd0a99cf226b3adb0006ce53c. 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/GXDVD2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050fe83a91720549c2dcb498860261da7441663bd69fcde8f0c75b7347a058b1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GXDVD2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae582fce9ef48262fd77c2a52b5a66b61370e927fe1d85e8d0af914c31c5deb9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GXDVD2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d029ab2e4a4ed92437d3fe656ef45a36a005530a728dcb8d0d3d32c8dcd864. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GXDVD2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3233ef2eb2d32fe4b3b2345ca6878ee9592140a6585ee8dda8481a7d5e423b4. 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/GXDVD2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd902f12778c496a849c7d89ba611b59b50ad01546d50974ffc09fa715b7acf1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GXDVD2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc53ac1e6dfa27f91540ec16da37b8401433555c865ed7114f227108da5a18bf. 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/GXDVD2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e01fce53f6a0d5c98fbf097073e231ebf017644ccd2a377bbca7d7f4f597bf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GXDVD2400008.