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 0x6c9097abda1761cb97173f92e1659237d237448e7bb6a105a1d7848f24f22fd0. 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/b27fd727-0570-4d32-8d1e-97cf35778145.json and https://artists.proofprofile.net/proofs/artist/b27fd727-0570-4d32-8d1e-97cf35778145.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 0xb576f72ac711cd2eb0746e3a78ba92b900c7f18347cdf85af975a5af656c0fd2. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USL4R2380828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aafc0f03c526fdac7ff90e9fab6dc4cf7b58322db0a280d27a73c34678b0cc6. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USL4R2380829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f66f62bb3140e0a63f2de1e6c688b19e48d3b6aaff2248a4acdfffbf80c8f8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:37:18Z), 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/USL4R2380830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc1ae728c852d0f9d528da6aef4aebf1d051552bc61f26d78bf2a80584a42a. 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/USL4R2380831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddfecdfc5c7e2fa05b817d2c6e7ef565cc543c4f5b7648931837131e97cdc77. 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/USL4R2380833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375545b9be99c885c7e4fee0bc85c2957837f24fce5d2592f3a4f34938db61f. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USHM22411098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab07860fb439e456bbff2d232cc24358daf7ae24ef364ac4b71ebe1a50cf83f0. 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/USHM22411099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2514b4ba32917bf4b8ed83972637012d15570b85380fdb30051723511c594e52. 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/USHM22411102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2f697b07f6e18f69cf4e19544f0dfd318b04942a891ae0f6e69d262efb1d4f. 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/USHM22411103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec1beab57cb247ba83e9cd1e7fece27600b662ab00d9d22f4555152607c53f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM22411104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1605ad74f2d9af096e98979ceb9f82a8437539f2fdf5bedcca35533dee04ab29. 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/USHM22411105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa20c5d1622d6ee3022dbc49f6033753e441fa23fe5ddabf3e94faa29beb1980. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM22411106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4458deb8ac9a8df9fbe21f3227ee4640bba57484c28550648b375aa6f3335ff3. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:01Z), 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/USHM22411107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c3631d028f1337edd0ea9e9a624357dead352ea3f5e40a371123f74cd48feb. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USHM22411108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba68a533055c3424ab7f64f71e90e7ddf93b9e872d3e5311d5c4aabfd4d2f31. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:29Z), 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/USL4Q2507653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d67b56631eb9844070235983a2381692e908efef8e84feefe72d47ff518c676. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:22Z), 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/USL4Q2507654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeceaf79d3335c5b9f1b1ff417a81754746b44df0909aec33926b74bc797b12. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USL4Q2507655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5aa8978a532b447edae78a0018bdab9d5258944ef59362a05f90ee4a0c2d71. 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/USL4Q2507656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb6d3ad25c0cc7cff28bf4851ecdfd4d7335cfea630f576c7948b7eeafab0c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USL4Q2507657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa5c47773c37bc70d3b84d7219137d40e16457ce3d1b0b22bc00669857cda94. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USL4Q2507658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8aa0dabef30de6f2f3f4ad79cd6514d3ef8fb13bf282643b69afe4d53b39b8. 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/USL4Q2507659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797bb3bdd492b418bc4ff9a6f9275598d5cdb7d5925b4ae98a142c3f3edda6f4. 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/USL4Q2507660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843f2593418e74c34f7b5d5c2342e810a666a7abe4fd8d2e559c69d62fc6c321. 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/USL4Q2507661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769f9aed12d95e8474170e61dfc95402c3cce8673d31f5b780d2f1c186c57e74. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:43:48Z), 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/USL4Q2507662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a3e9163598fc803651a52c08f6f9692fceb7bbb584368ac3e9b1b02f7ddbc4. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USL4Q2507663.