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 0xe0dfa9ca57923a04b48817353e2f96ba19cac73b0cee898f2d21dc01ee051383. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/807cca02-d010-4e0a-8bbb-9a5f6ea59a6e.json and https://artists.proofprofile.net/proofs/artist/807cca02-d010-4e0a-8bbb-9a5f6ea59a6e.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 0xabed7c661aa65d26deeeee5dc3f858de56cd11c69f53666ad4e9fda0eddbea94. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:24Z), 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/TCJPA2484425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab36b2275c8d630b707f9fcc389597705a33a289694e8bb1339a7ac24f43aa36. 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/TCJPA2484429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecee11cfb27044c163f32e90b79387d285c28d4a438cda87ba716bb8aa1b37bf. 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/TCJPA2484430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1b346813c6c5abea8f8305aba6da8fdbcf5013bdccf85bb0c1dea49383e3c2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPA2484431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475d05ad57d935004d5a39f118f0e0ac3d06d7c6a428b13d7e3b6127161918f9. 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/TCJPA2484436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230c42722a38e9a05ab7266d438c43ff082ec9aee7fc4aa90736dac3c43eea6f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPA2484444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b17773d448c4cb4001fe8c95a39ec5ed5c4490ba0c5559212942d2e55833c08. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPA2484451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9196b0c2d9b8a3040cf2fb2f442877c95d5525bb7a02f8ef7f9560b6a1f262. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:38Z), 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/QZRP42414482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dfb3fa43d5ee8cffc52006291af69db5e645f0b1a39d8c921ebc1b9347dd8e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZRP42414483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4e628ef6554cb9a58ed7369ffe41f58c290660713439884aaf850d1a54e233. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:05Z), 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/QZRP42414484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80a3ff17166a13226511b2c09580f4f99fff47e8fa0f80fb8b78b6de998baa8. 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/QZTAT2498095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc5fe77a47cdc00920271c01c10e39a684a8fdc608600fd40b46c11d609bfa7. 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/QZTAT2498096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df2674b22283ae0b25ee8daf37c8c08ef6950f9dea697da695b610de2512bc. 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/QZTAT2498097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93827ef44e4b94b3d566e50ac8a3ae935e69fc231b2ae5f2744a470e3e3837. 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/QZTAT2498098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4574d99b7291d03da7ba9942bccc249c4a77702c395de05cf58f2d16ec36a2be. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTAT2498099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639046bdc0fb720fcd70beeedc53bc476d6a2c5edc6cbfdb89228f442a97247c. 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/QZTAT2498100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd14505ad9654c25bdb982f519978c066a8bd8a52f833aa8a154b575e618320. 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/TCJPB2435708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6f87d87fdf49093ad46c8e817bb1129f72f025483c35d719216ea682307f78. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPB2435710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fca26a0335f5d0363b27f2845781c222f3c7518dd93a8d7117847c1e8122e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPB2435711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c7ed277b54d6901a3a6b1b070584ad1de5a0068179393eeb37b7ba4d66dca2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPB2435714.