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 0x231640fe96a49c8a5639042169701f75c49409f4c033a2f0bc6a8fda87b5bf17. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c393504-5b8d-4943-8c1e-195991a2a1b9.json and https://artists.proofprofile.net/proofs/artist/9c393504-5b8d-4943-8c1e-195991a2a1b9.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 0x4f5538d90c3fef8a8918f43af85d7bda4ed253a4075bebff8430918ae3bb367f. 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/TWCC32000556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b831cfd757cac08509ed7230ab7c0046a7cfc8eef71ab8dfca05afde361c1c9. 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/TWDJ52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf185c4bcfe7348564e88a49070e49d64863704c6a9510b0a0718a94c4fb6957. 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/TWDJ51800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef6c42a3dc1f8e18bbfd39f740a2abfedd49eef27c85d01c1525882f5219ab1. 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/FR10S1978649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7366ae94b4841e1143d7f11923b95bd17a5ab8de49dafe828e1eaa8ee8940b82. 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/TWAE32000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce44064d2b5d9cdc1e9c341982486b7a27c72cd77049df509d03be5653d21a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE32000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f67b25601824cc7ab442c1b860ae964c97f2b4c008f0c5e7c27882cdd2e4870. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAE32000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaccfae3e3c4ac81d54fc965983ed2ffc68d4e053a3d1e2a491c62705ca25e7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32000710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37c173839f08aa0ba44c8b2f84f8c4ceb1af22a975132b357bf49cc9753fece. 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/TWAE31901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53f6320bdb61c7310f06dff736bd3050d4168de9bfe79a756f4fa2ac74f2e92. 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/TWAE32000713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a1c242c07ed228e3ffe9dda6df3b05b774beac5520ed389575c26bb1abde69. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TWAE32000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd66c88c79b3a25d61b688722c70ee2b82c3ef1b3863efdb93375a2b06a46f. 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/TWAE31901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2abf2356459bea6ae59effbe2c11b847056aaffdbd516a3051192e3158f6d2. 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/TWAE32000717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37c173839f08aa0ba44c8b2f84f8c4ceb1af22a975132b357bf49cc9753fece. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE31901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050c214e282f724f7686204c085d2a7ac2a3c8e1447bbbfbb7ae8f8a95f26b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31901053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2cd02b50b9d796b9edf4f46aa576fe7cf0a72cd6dc55fdf73f13cfdff52cf1. 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/TWAE31901059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8753655fe145c554b7ec71589f28ab983f614568e741add938a0c33d08e4afd9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE31901105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51eaab1c711225046c61dd77074ac5298aad01a31def1295ed833af37c20339. 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/TWAE32402895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd66c88c79b3a25d61b688722c70ee2b82c3ef1b3863efdb93375a2b06a46f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE31901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d353d7a317f5131bad95d1fc6673e84c936ee4b6610eda57d29b0b28d247e3. 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/FRX282191800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd17982a1a6a01af85f4713bc473403c82ef3e995865819839984f8fa3be47. 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/FRX282191801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9376b3ab7d42f464b90d6e5bdbd2514de60f71cf0a59ba3b09169ab55c4dda. 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/TWCC32418328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d05ea043480d0940a6882c903cabfcf2f912f8f8db7fca666df6622fe988cd6. 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/QZNWX2111765.