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 0x7833503e6b4aa1e3dc9837adef673ee3577308f2b2335dbb6f6d98f9ac4b9efe. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e55fcefc-fce2-4be9-b740-208f67282c95.json and https://artists.proofprofile.net/proofs/artist/e55fcefc-fce2-4be9-b740-208f67282c95.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 0x96b6401335b0828c5cc75c361858a91c39e740ca001dc18cbc0540909ed89bc3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBLFP2552789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7288e691342308e4fd311164e34c534ab2e3b35a53f22b738dcf3c280e798fbd. 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/GX3Q92535702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dbb88c4d0c816e7d119e716094dd721f37398ed1413a5db00e5207f7822962. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GX3Q92556196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8408ead2b96baa199f7768563cf013e6eaec3071304421c6e1cd02599f08886e. 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/UKXN22551300.
It Will All Make Sense - Vibekulture sa. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5923e9e07a48dbb5acf95afec4c6fe42e7125d2ac8d2be145d525ad7874b0b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/UKXN22514791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9806e8032e281dd57ce43a7078bd5e1f40a6939e9b9275a9dbfa36f3d461998. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GXF9Q2502654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe4eb0c3e0801b94ef80e1965aac761a7aa7a10160db8b2700f3fa1bf7070bd. 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/QM4TX2420062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb446337d30437cead34430e71655601965954f2fd20e49831cb0f10211a6ca. 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/QZZEC2302443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728ae176b7e016aaff972b32815fa6bf4fee47394045a4291e12312fcbe52968. 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/QM6MZ2423471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7392a15e4157efc26ca2dd4f1df0dbcc45c5b76f8c52c5668d386fb92556756. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QM6MZ2429133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663ce26206934cb6a01882ab04c4b547fa0ced4032fa4de3ea7445c2235cc6f4. 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/QM6MZ2429135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb894ff91a7d7e5acbaf0128351f6a54629fe3c7d48b8b1750a8bd8c6c8ccb4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM6MZ2429136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00126e2d019523a743d43d64fc27b110626b6b7b4f63f837ab8ebc28623f6aa2. 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/QM6MZ2429137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba26f3d528780fd8832d79348524a6c42b1c0ca003936b5ee762677e3461f025. 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/QM6MZ2429141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af75a32b5e0efa5be2569ec5aab581026a1c5e2d257a6ef44dcd5f448014c46. 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/QM6MZ2429140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7eb921bc903acdd2442de594f89f75d4fad7ffc75de6649dd2f5e6667a52af. 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/NL4CP2445239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d12f285889fe0960c3115bd2458e436da2ebfcaf202708093bc53768f604cf. 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/NL4CP2445234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dc23653ca15015f67eeae75bafa8d0841e63726c75b6a2176d02cd9d03cac3. 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/NL4CP2445232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47036cdd41f897df1330340b41d368b5072a19da9276cf022090319e8d60bd3b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GX3Q92489826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7990bd0b3e2ebf9a2590e440064cd5bf6b5a1958e7e6825ccda6fbca5daa4a50. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5FN2452424.