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 0xcd5c91cadce5cc996042aef9fb3c13e530f812ea536d21cd49f326bb5b17b9ad. 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/7f4bbe54-2b7e-4de8-9ef0-49ad9264501f.json and https://artists.proofprofile.net/proofs/artist/7f4bbe54-2b7e-4de8-9ef0-49ad9264501f.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 0x0dd5945a6f6f82674abb333b3a39827636af0926585b7c56f1a0938668b351ff. 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/FR2X41907895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bd6675b015e2aefa842790ab3bb1358a226c50f325b2b6a82964e737d10cb9. 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/FR2X41907897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a306c36ef15eda2b02a56e8b930362315c5b101be504ea2503ed50262283b. 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/FR2X41747420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2a5c60a6fa11b0153793c61b602f32549fbcaab86724829ee2a4efb35bb57. 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/FR2X41780812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c8a334355bc88be9acd3ac5fb5d38b9d222820ea79fa6841b2ddea73b8ca25. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:51:06Z), 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/FR2X41780817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6751cf5ab0811a10dd26541feb74667674e10c293650700b7d235a248d787a. 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/FR2X41780818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f9c622b1602787aae881548ed29cfc8e6e8be26b560f53d0c87f3ab712f373. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:27Z), 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/FR2X41780819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e0022d718d716121ef9641ea780360e2c3ec3f437418a5fc8fd04dffaddf9a. 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/FR2X41780821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda626022b2f98bf4681ab56a1283e2f6e1010228a1937be400424e562e3691. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FR2X41780822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854aa191cc24b7933220583f29dfbd8d69193c3ef208ebf5872a585974e883a8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR2X41780823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae61960b5598e0f971c6118e627d95e4910de43483d35f74f8ead3891ec1ae. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/MAA172000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381b4db732dce7ee6e5771805bfd73b1fe3a57a7419afbe7e3baa7d4e70d0c22. 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/MAA172000644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca7f2d4ae98e2b9918e66619daa29dff6dad55b1bec044f9e0db230d0bc91c7. 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/MAA172000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dce729559f9b5fd87e9fa515784839b7e6a4dc5469f1ff366e7a02edf0b6963. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX871510429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d1bf027e829a39d8eaa3942fcb1e814119f2efac50fdfa86322c2f27599ff. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:33Z), 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/FRX761596664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1693c59107a5c14ead6dc653621604c39bfbdcc1787260dacbe26cf829b4c173. 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/FRX761596666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fec305abed5a796677cdd47141d6fe75421fd1f65f774fc348668399221906. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX761594650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2449fbf4414993493850b13df08d614aa772ad34a52c5437754978a718896f5b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:51Z), 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/FR2X41598388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3eb2b3f1eb4ebc8fed942b6b8c4804a6c6a3341807e2877e0b12b991e10f79. 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/FR2X41596513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf971698aa5c3e9316a7313b7ff92b92ecc7fec7ce477ece4fef8ab99ef6e0176. 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/FR96X1504331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0840e3014bdc5794aaed2a568cd7296f6459be948c7602e855012d510a15b6b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR96X1504332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618424ac0dd110182fd432d84b4b6dc87977d8ae6086f0debb2d8e1eef8b41f5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR2X41599841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee4f241340f38bbed3c930140acbcb540b35c100e5a1b2e77fec972cf8fc1f7. 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/FR2X41599842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbb0691f854e55d1cf0ce909b0da02baf5d3fc55fffdcc926a73235ccfc4cd0. 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/FRX201797956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07aa404a12d3fb5c57e0835352b04e8153d40057a5edac8c9a93d9720a7b7f3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA092510114.