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 0x8d2e1f8d84c6878a4b282f2f9d77b71fc62b5ef1ed5beb758e23621b8cc9667a. 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/8b1496f3-5632-44d9-99e7-27ffac7e133e.json and https://artists.proofprofile.net/proofs/artist/8b1496f3-5632-44d9-99e7-27ffac7e133e.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 0xb7c5e292d8c0766ce30bfcdc71da3833b41b9729bba247dd9b11c4828167b0cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFE2008538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a676a562f439a6b7ca2e17352711885fb3da5b8f907107ff43ca54e678ce3df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFL2187563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7038bcf3566bffee17473f6b88b7b4a09a425990b52bfa42e0c25d9d8e89235. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFG2028859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c9323b4d839b9dd082f47d09e03026e28efa04914b4ae5763a2a6f915b444. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFH2051033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd13d6cf449acf3cf49784469ad2ef5160ff894c65c1bdfd5edbb71ebbc2f4dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFL2187573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4305da196eed0d20593438d6324cc0b8507e04c15918ef910422565afeb0fd. 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/TCAFI2017397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2568a68229dd9cf9ae181e97e66fbd89aa593a08cf585bec4ea319e74bb58b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFL2187583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fce80a75329e6d106c567882fd55200a67496bfcd22048deb85ccb74f6db6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFI2170284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd21c88fc7d94ffbde58c2d4e4ab595f8e7d99ee1a10302613e4c61fdf68da4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFF2049971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19b9f8924bb9047386d71dab19b70cb06079a498e1b1fc0dd239d16330ee8f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFL2187597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb22bfedee1516611b502ef40f77fd9ec0cf780d2705f067c3ba73c22849d3e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTVM2339275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a4b4650efeb54fa4972c37f43c3143cbc67e6b024a6c4d2f4de0e43c8a07d. 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/QZNJZ2399824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d8723e358a8b4c9d41f3fac7431585c6f4549b2aef34a16d379abb643106c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGK2285522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7e6c4831f7c5515dd07f81c155e2a77c960f95a520c3f8ad5956f11d021aa6. 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/MYUM82100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8f16b01ce6090dfef43e956b34c44a7280ca067189fcbf0ff87d5c9b97f3c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFQ2170647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fce80a75329e6d106c567882fd55200a67496bfcd22048deb85ccb74f6db6a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFI2170284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4305da196eed0d20593438d6324cc0b8507e04c15918ef910422565afeb0fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFI2017397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c9323b4d839b9dd082f47d09e03026e28efa04914b4ae5763a2a6f915b444. 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/TCAFH2051033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7038bcf3566bffee17473f6b88b7b4a09a425990b52bfa42e0c25d9d8e89235. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAFG2028859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd21c88fc7d94ffbde58c2d4e4ab595f8e7d99ee1a10302613e4c61fdf68da4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCAFF2049971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c5e292d8c0766ce30bfcdc71da3833b41b9729bba247dd9b11c4828167b0cd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAFE2008538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb330c24b9a32be13e10b60459bdf37eed54446ffda54eb858c48e6d9719b1c0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2460818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa639534f3691181c3fd3aab01e565ab886bf7e102af6546d827da5d82f00edd. 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/QZGLS2460819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb22bfedee1516611b502ef40f77fd9ec0cf780d2705f067c3ba73c22849d3e. 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/QZTVM2339275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a411e2933bb5d911275959272c13e2ff0ae423a8e239bfcc97e81d9ec71a78. 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/QZGLS2460820.