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 0x1359146c265269c014e934f9611ccc964cd11f22ba275818b2bd6756587e0104. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de607310-7ad0-4a38-a214-0fdf236d5c03.json and https://artists.proofprofile.net/proofs/artist/de607310-7ad0-4a38-a214-0fdf236d5c03.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 0x176e31865e90692624452ad582283058e3687f2f01f3e785b31fc2b853041eda. 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/FR6V81653689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf36def97f94b34b2f6e9408ae52215b9ccf4c8f35ba042476bcace680edad36. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:32Z), 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/FR6V81651669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc01f4d609582f451611a3a13f5ddc374e1d4a95a67b3877d55b522e5d53e72. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:11Z), 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/FR6V81651677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1764ec87dc467a63cdbea9a25f34be703513d368afff9dafea3f9e7bfae2ae55. 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/FR6V81159511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc82878370679499bc9a68c6a29ec76f42cda1e4eca6d10906cd1ff97cd9fc5. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/FR6V81159494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347791ec89f6d8cad61e343c463162013dd21192de5a3443b891afa9493e7cd3. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FR6V81159495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9172fd22c3c92957ef7665fa1a5c144844276bf2e49927d4776077574b218ba. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR6V81159496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ddb127c540ae87ccfe14fbbfc92288a56e8a690389dd97d08eaadc4e1289cd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:58Z), 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/FR6V81159468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93adb7bf38529f40f5ad353096e9bf5a16feb95a13c4a660d083499fe2077963. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR6V81159469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9007cb0045998685101f52d3ed8ce6ad6bc5107ca19ca09b8f5b0f5d9d389f. 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/FR6V81654399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498678c0757b357c3ba8a13ce19534bdb31ef4bef5acc83b9c83fb9830b36f5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:17Z), 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/FR6V81104450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eeff6afea88089424694364172e759f404bc2cc7dd0b80ab985d2d181b4942. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/FR6V80448288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031a866240443aeff901bb03934acd54776613ea2f76857abdbd4bce47a1e15. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:44Z), 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/FR6V81303089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6879da1f6199d3c2aacca0d1b742730bdcdb852986d4ffd716579b021e01117f. 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/FR6V81303090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b932887aa287535e53930aaae1e1be61f55a1e979677954c09e8e539d3e4f1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR6V81776109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a80047b4343e802796c275c3b8c7547bf390f9cb170bdefafbf68f7660fa42. 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/FR6V81650479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15933f9ee2441f3928193e6946424a8256692e40daf60fc231252cc8966e0b0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:21:24Z), 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/FR6V81650481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8be82b88fd506993a8ca9a876031ea57198e4fc147fd7f4d1ec8c7b9ca71fb. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/FR2X41441322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621540f3e2e69cc44c8585d51cb2debf5c51764c8dad3b7b3f031236f656d5c1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR2X41449011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485fca33530406fdda65fcb3553d9b26a9871586484e9efcfa412f4e1b21082. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X41449012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa590d00130cd3b7541f5a9711a497e85a2bab3af7a46f7ba1e892665bac126a0. 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/FR2X41449016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8328322585b10c36e344416cd4cdfe2334edd23ac4b7312dfce56106955372f9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITH471612107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a0032addbe8d702f86607b6534b42543caee67efb78d67a05a0816e9b342f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:32Z), 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/ITH471805104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc9c04fffa1e72720df4ceee7c1ef918afa34a7e4fedc3684ffe6f78878954e. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ITH471805105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b6487b8dd2038d1f5ca0fb645ce20610faf7ae70beca29c027fb68b763bd20. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:38:47Z), 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/ITH472003102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de3fa0a8be3a9613497fb3a92fc817ec9f8b62b58ef4de5c806336e637d34d6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:30Z), 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/ITZ0X2590060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca6d3b681f63a3d3d0fbdfe72ed81b9e9ccfad306d0908c6d486de26d2fd400. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITR632500351.