Spin or spinning most often refers to: Spin (physics) or particle spin, a fundamental property of elementary particles Spin quantum number, a number which defines the value of a particle's spin Spi
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 0x7d414c08782a7cfed1d71b944b3d017cd9869734a6829d9205af769059f42ddb. 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/b05f7e9c-0715-4bc1-beaa-30b5033e88f3.json and https://artists.proofprofile.net/proofs/artist/b05f7e9c-0715-4bc1-beaa-30b5033e88f3.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 0x7d525b4ba3308772752508c674afeb811eb727c6db1127bebe5847387c4923f6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/MYHV11301034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5e5e454ca86840447cbe9085f7fd964272d65516a830e7de7181b8bc6ab9dd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/MYHV11301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe1fbc60125f270bb2765e6da0f731d4195b231f917db8b7addfba477f5f50. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/MYHV11301036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2f28e7e140e3454fc54934716cf961640935d56d8abcdef61e25cb6c5ff49. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/MYHV11301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd86db95e3d1f2b175834a0ca745b0912e444b0b259b840ee7940f12fac8b7f2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/MYHV11301038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3530fc3116dc212ce1b7037506a37e11cc4d0c2a9e5e61748f6b5b0e9ffb31. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/MYHV11301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309286973875ebc3a320aa36a3ae3d6c8357604fc604726fd8b3aea9d75df0aa. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/MYHV10900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698fcc37c47a37024bd607fb6c78451557c9255b131f626cbb88b4fa4b823c50. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/MYHV11301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a775c08d333f85c1949a7555ba94653c5758ac52407ec4375f0d15f3c5af6e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/MYHV11000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdac853ebed005392c8af50abc1f035bc2c220f120de32984e2280b8f35c044. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/MYHV11000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26322323a3ef0553ddd4f14d3ffeee3edbff7c699105dd817905be635e0344de. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/MYHV11000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f3145871404237260caeedd941e265fbfd20218f6672ed90a2505bd9e5a575. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/MYHV11000821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e22bd724c4df984ef52c868fb422fad2093efaa824f0a763abfba0b79f100. 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/MYHV11000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf2f09b535e7841e4ff0af5a0e7a0709dbd084faf111daf77e531cbb5d5c6d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MYHV11301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5433fb932152f5df400c0bbbb9127f3f78ff5648a3085e33d3b93d659f2267. 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/MYHV10900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309286973875ebc3a320aa36a3ae3d6c8357604fc604726fd8b3aea9d75df0aa. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MYHV10900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490bbe6048b642d93994e642ecb08cce5df2e238b93649441a893ffbfa5a88f4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GXBAV2126648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d588bb58e24332ca0f9c2b1c95c902048217d604c9f45fb59320bf9e2954bf. 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/QZDFP2171770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb7812f77d188370bfcac4759b860a98496e3218e49ac4129cf4b8a33680a9. 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/QZ4JJ1789442.