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 0xa96dd6b89bf9bbbf7afea56816b352a68e489efec18b29e815f818273269cd80. 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/3ea00756-dd3d-4381-a6fb-4df52a28d286.json and https://artists.proofprofile.net/proofs/artist/3ea00756-dd3d-4381-a6fb-4df52a28d286.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 0x779273b14c16c6bee519dc9aed3aa9e98d8ea51da3f1022911f31123b29f42ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7M2439011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27402c29a87137945e60d62a9291d8e073f0e843ca02315b54519cbe7a868d3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7M2439031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403209bd3c1391a4dc237416c9a7a49d265af11f4f1a938b882d6bde906c0b5c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7M2439040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa399b9b1b5d08f35cffbf97169fc8e678872d8fa12b1947df6c2f10a7de632df. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7M2439018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a207170f8573ed415f2e1b0e5359bd5869eb2f8cd33417054737833920834de. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZZ7M2439034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0efafa88c3821bd46d507f2d2dfa6ff438affd63a7c7ad09da6d0bf23e9db. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7N2413064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70128c284bb0666225f9de19123e580c089812475c6467e37924c7ba3d23f9d8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:02Z), 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/QZZ7N2410508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d113a2de876c78c17cdeaf5db245cc2f713362e71465928f6e83279477a4d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7N2417087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65cf455f29e83d90d3b7ba02f8fa161744f5a0b085cfc31593a12297ac3aef3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2413057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358b5d6a3750411324322ab8a55386e4df88ac58645caaf72bd7acf6ba90f052. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZZ7N2413058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aeb8017909f5caa05a6ca45a916f373e3cacf46a967017434591bbe1c45bf4. 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/QZZ7N2417088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb51dd436564aaeab4a11bddc0379e4998408eecc1e76303c54e3a7752a33ebb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7N2413061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee1ed48cbb49fc78c040119d468a83bf0bf1bfc73704c6af1e669ec317fdeda. 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/QZZ7N2407038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10718c603e7a9cb8572050b9b6a9bb19c2f712c6cf798788a55fc3a374ce56cb. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZZ7N2407035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54032895c3fac3ddfedeacb65b5969694ebb3d4f57168bc9cd88b0466ae2111d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2407019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2917460cb8ba84e6d69010e922d81e14447f02a204cba700221305be89e53caa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7N2407021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3daa8582522fe0d04517bcd17da5580198d97691274994e2917156347092d6f. 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/QZZ7N2417080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8b8920d846f76fc74566198c8a8d210142fb2bfebe1e1946abcddf72a6f8c7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2403520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d14f5c3b8f87178feac7ef5bbd211e1f6b646d2459a020303561392f153564. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:43Z), 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/QZZ7N2417083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef0e5f01f9823232f2b0387357131824178a73b7da03d13487ca771e9bca5e6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2415272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ddb1d450f4f67021f9afe6b067206a870746a4597d089fee13c94dc8a6504. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7N2438675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8be5c0ab8cf24be3238dadec90d4e73fcda1a9d57cab8eb1b4006c096bdf90. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2435827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681139686e4e973542de0247173a76870d1f1158b91d33dce40bb38a45239c74. 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/QZZ7N2438676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6416f0e719be03c306ec68307481de03258cf142a05f632a55e22b0f32c9cc. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:35Z), 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/QZZ7N2437361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09f38f1236ad8e9babc8120b6727d68c731be8c8795bf1ce00a1eee2d05fbc. 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/QZZ7P2418837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118a181c9232e17f38cae008509e53585b0490250596c85788ef867365c0a79. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7N2438677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7e418f4705114a42292872d07cae2b4d28f75d44aed8f19a3776e12cad689. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2435785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedf5832a5ad09543979a4f81376194624429c68b1f4e164a381ac31b1d8c235. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2435804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb9f1666068bb9fdd55ff663fd71f69c2cc4704f7e0b6a699d5f4d658c39b8. 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/QZZ7N2435800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728b51579d1ec9bc4f000f462e432cfb47ea2c07df79311bdaf0d3381470b56. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZZ7N2434464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b7516d940c288aa0af4256a4ef863353437d7f5e55eca7eefec35e7259b46. 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/QZZ7P2441480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae12b70946de64c2d29be3ec070b84972e22ce2663d04ca057a9c2fb3e7dbd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2459983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc792eec9458df0697fb4bc85c3f2f7407c6575f186cfccea9c55453f2fa31c9. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7N2459992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb31c6453c1c884dd02fb7bfdddbd5edd1b2f688cc7425526608bd88123006. 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/QZZ7N2458668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d32954d025f2c9c74efe0708c75b5b3cb923717a86ff7d938d5120cf00c563. 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/QZZ7P2444565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f86f88a6e752d90cfd383d3864d50fb5e55b3fca4c3a4b9c44a44af0a10b840. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZZ7P2400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075bacafc40b956965261545501b58f75b5bc8aad4ab47d5b6aecf96e35586c2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7N2498114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e43b33dd8c0cb2a61024a499fe1e56638902c605e0e16864b68567aafde1082. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7N2498107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6487567a3c72d8813e69ae14fe7f090631f1115285792ba8eb74f9cc598859d4. 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/QZZ7P2400218.