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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4888041774a0755710293072c62b75f8f6f03a882728f97ed31d68d96b6edfc. 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/f31626e7-dd3c-43ab-96bf-dec378ae6e2d.json and https://artists.proofprofile.net/proofs/artist/f31626e7-dd3c-43ab-96bf-dec378ae6e2d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c990cc13cb0ba7cf5c74f6fd58d5504d3181cc1da10b68f21a79597227d2f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWW2162065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b367ebd8dee16e8d9e79a759b96fc0a81fb3567cf7248bf287cb95df2ce0d0. 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/QZNWW2162067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dcb62aefb79c982a1036e92c87e5cf41df5eb27c994dc74a681d0ea38b318e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWW2162068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a3776b06112d18fdd5b9035cc72d1744675ecde9f81cfa64213d4ba5f1909. 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/QZFYY2221309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa306dd8b1840606e79b45e96185ef7050c6e21eec9d29ad44b7ca5404a9f5b61. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZFZ22298764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dae93babf87d84fce94657ab330055f175acc0d8468838ab89b778ca508610. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZK6Q2275748.
Someone Somewhere (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab34dcb17289ee5cae0c0ae502848e74fc70452e21756b0820e8f66a8ec792dc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZRP42203727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92342d469934365932853bfc794191e5601e5fb0768bb3465a529f07593bd73. 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/QZTAT2251905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f294c88a11d9621b1799a2308f45fc41c0277854f1c3956568f4d081271ebe. 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/QZHN92354118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a1618c184d210940216ebd9fe81975fe665925b8940e4b32da39a107c83624. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMEM2315860.
Series 1 (Original Motion Picture Soundtrack)
Series 1(Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1c96aa0c3a00d768f1b6ed4f953562a0818016bbc54340193e779f81f171aa. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZNWS2368084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e1bcdf0da1d9ec09eeb3c2db8411aff615e717d36663649c76b71e73897322. 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/QZNWS2368086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d321369a0f72fd2cea2c77a6ddb20605b0da39a05be82f0c2b2891504ee2e2f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZTAY2383397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df140bbb08f13ddb1124e151a27e46916a246887276c9ed923b2bd966da42ef. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZTBC2345685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ad0003a94d3703822343060b966d65eac537e270ea5d9899d817deb45ad8e. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZHN72448551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8678781afe8dbe04a2233618e81f10128f13c4837ac62bd7e6141ea9d204e129. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZMEP2436827.
Series 2 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae5d6fa0b94b10c09b3f6e68fd08cc32da05cf4af0bdc8ea4faea082ec9ad0. 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/QZNWZ2405450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81a6e0b68623d2d87903c9ca59e2709adcaf3f6a5a629ae94df49fda98c9a5c. 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/QZNWZ2405451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336e318358a0641dd610270923fed8f649b50cfe18d607c1f90a875fa87a4f27. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNWZ2405453.
All I Need (Original Motion Picture Soundtrack)
Original Motion Picture Soundtrack (iii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b85b2e820b61b7fab7b087d85e08006ed06f05043e958ef38e8c409b447277. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTAX2482869.
Martins Hero (Original Motion Picture Scores (Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d32ad1dc435f1ac5c6c8bde5ff0796c16a2c3d007f4e5a57f16cd1674f17d3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHNA2573861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864e58ad17a3b5b1b752e8f7263c0504320db19f9106fb73a3027332f6ae9ae6. 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/QZK6M2521308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14486776df2fedfd4ce0fd06014051de86934b98212c711ba3b37b595b879f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNWY2501174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011f6631163ee50b09221d05a0f64d36b878b6d004c7db4a6dbb733e1ec65993. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZZ7W2500552.