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 0x18838f3cf3cee986959e228d55acec82b2d465f204df8ecd7fae9bdc7c100578. 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/348df9b0-1255-485d-b43c-ee89c485915a.json and https://artists.proofprofile.net/proofs/artist/348df9b0-1255-485d-b43c-ee89c485915a.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 0xb06e77a3612c4cf2e5f50b8906b8365ec6d3fbb74a79b16ad8419d52adc0d3a0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCACJ1537047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae5f34e34a7d828a9d6682149cc6a74f4dc47a747ee9fd99a67ab906deea10. 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/TCADT1893065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaa047da43f0e5329f9db2966e7a29a4b8f23498ff190cb064533a83dfe72de. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCADT1893104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58e6ca1219956275d57344363debd46a068d993823a6088db024cf015583ef3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:57:47Z), 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/TCADT1893105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdfd536ec0630f50d3e7b5dcfa99eb1323d9a084a7219e18370f8001ff180c0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCADT1893106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f15e10153534703920207668cb88b120aae58401d8236056d89f40df0c95e3. 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/TCADT1893108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c9e99483f29540dd46670607dcb8941e6389047f3e053a0ce460ec384d094b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADT1893110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c12c74e6b0bee499e16b83035745d52dde474da7d72c1f168765a2af98dc73. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DED832200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a05e03bcabf914888060d49a0066b7e13fcc5e1f697bffc12ca6beba4ae2fd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DED832200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8f760bc29369d384c2e6f739a18c8bf723727aabaa3251589cf96bb0554aef. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:47Z), 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/DED832200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b195df67d8def0034a4e66c290e06b456b40fbf54ab4a75ef955de251baa3c8. 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/DED832200577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a168f1ee7cd9ff2c8400b53268e3137e7cd388d6054ddda11f4ea325a6b6a9f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:32Z), 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/DED832200578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e3a33083ea02fcbf65da3ac29b42db94532d27348f039c79219a07fbecbe99. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DED832200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63932d13819aa9eee9f0a036b52d787d98cb89eecbebe308bcbaab4b942319cd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DED832200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ac17fe4c183120b1718d6232960fba719299aa25714270e9a6e0023982ff53. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DED832200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa811a590c78ec070682b5e6b3516e91256ec9b227085a82bc687052c9617ccbd. 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/DED832200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c9b7ead20fb2ff715e07d9cfccb8d3e0768a305cd9e50261ecb9fda63f8e0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DED832200583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352d00d4c2c008d2a111e6997ea7789b187efc7b6063451cb8e1547db61e898. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:33Z), 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/DED832400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2233ac321da219906e35721a534144b46203161d74f652849e996bf2ea45cee9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DED832500300.