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 0x9d8c5c05ecf03241106ec15416bb277498cd9d70489457958a5fb201e8052703. 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/226fbd14-c7dc-48b6-8acb-96c674b6494f.json and https://artists.proofprofile.net/proofs/artist/226fbd14-c7dc-48b6-8acb-96c674b6494f.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 0x3bdab7cd73058f3c7d03bffa654f48a3da21ece65b6c8bf97151b7bfd604fb8d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ITG581500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6f2ae25d468989ea4b922d58e48fba0ed0672ff3d693c5ab311f498ff12f1b. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ITG581500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e0f204ce1193a4fb14a92a017cf5c41323fa335a215ffde97a5c4c760e295. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITG581500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15887c32ac66d07be389e66db3f8ee97bd62bb9799afc6c745b3b137e6acbf65. 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/ITG581500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdab7cd73058f3c7d03bffa654f48a3da21ece65b6c8bf97151b7bfd604fb8d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITG581500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0076fbefa67d54b95a34a51728a950d5683ec3a1e9d716093e01ee8e9dc0c7b7. 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/ITG581500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26993a00d1c751bca1308e3e47985d8049be006248f745fb9fa0ddafec781e90. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ITG581500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32cb183f8bea0e522be419383867e2d7c18f6565455a4af125d3f0ed5b77a65. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITG581500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc510d39d4fe1903ff678344d0aeb4f28e2ebb28c262bcf5ee0dc3ad517bdc373. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ITG582000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251a642f59ecf2165ce973303ae3a1423cbf7ca85d5ca5294fbc98d2f6c97114. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITG582000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3035481eee66c97c8253dba824f06b093d7155b3c3775f83a93031beca0f40f9. 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/ITG582000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c31f9049368bf1144ba8eeb43a207ed1f1244d4ac9c21e4b8826fd8df86faf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITG582000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd438f28925420cedd72c4b6740a243f0ad4f257dfe9ada09b501d446ab5844c. 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/ITG582000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e044105cf6dc00e781c001999048d9bdab8f61eccdd922bc7247daeec28a5f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITG582000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d36264666c289b522ce2d3ce35d067fdb62f00e583c428839a9c673d2ec38f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:54Z), 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/ITG582000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf319b3ad28384b8f25cf925c12286aa12a5616033d3b8135e8f413055e037aac. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITG582300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfb7c1894d849f06a709c93416022389cf823230afffddf2c4c803a99c0f521. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/ITG582300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecea7bb59f15d4b3c299d43f77fac30199f99e222f087ad07aada04f619b7ea4. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/ITG582300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b2be433bd135f34537688c7a750acd923bf9544f10c70b8c59605ac76212ee. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ITG582300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e948f37a3e9f8797ffd58b1dc5ac087f3fc595cfa5f293ccf9d5f0e5eddc8e. 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/ITG582300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954300a4b907c33bdbc46e1bfbae5d45756e404e1281b78549b7cbbd6938138d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITG582300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab672636417999a19a398929f92ddbcf52afa642ad3dce88a69111c59b49418d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITG582300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ff9c255227a8e52ddc3f3d00b6a09a500974032d33e20ad6f030c2d53f410. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:35:54Z), 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/ITG582300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5489ff29752e205eee375907f3578d7cb317ee7b7fb6ef8a916ede5ee698cb. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ITG582300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678957cf0d3b89f51e16e9a78d2bb074f331097e470f788ac23df2e1e5a8f0cd. 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/ITG581800018.