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 0x0676ddd20fc9d907ff83a049d7245b0994a112ebcc8bae70ff3b8353f20363ec. 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/fbb4f569-5ea8-4efe-b7b8-2106da715957.json and https://artists.proofprofile.net/proofs/artist/fbb4f569-5ea8-4efe-b7b8-2106da715957.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 0x0f96d5c34941b5878c726d848e7c0f1b3c6bd8d42e72f6db38a5cfc70139fa19. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMZW61500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce184d8b3edc097eb07ff10e31e90fa9fdaf7fac14f7d90918f630abbcbc021. 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/QMZW61500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72e57129cfbd093d1856ba098eac042fd78391c29376fb0074d2150fe2b3dd. 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/QMZW61500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5547cdf45031afca55bc963cf01c580c5dea3c64bbc206a821fbedd8dea01d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:39:09Z), 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/QMZW61500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35450910431d8640b64dbc2635e944812436e5e4d5da6523496a78981b80287e. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QMZW61800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e595ee338cdc1ce2aad0999cbb084e6b1edd2b3f91ae11c99a86dffa4844c6. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QMZW61800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bcd5787c6ba8c9cc0c788ae1bf3eaa458411b4025a98e0de7de0950f9067b6. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QMZW61800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a8dd1a7e2d5b1938e140c153a990db0c86a51a89a8509185ace98202239ab0. 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/QMZW61800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea3abcdc70d606c8ebce8404e212f9da3a49cd1723b224435c0671935de63d3. 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/QMZW62200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7aec036ee602e7eb88b5bd584e8706ccbedf4bb97962c142566e224123d7e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMZW62200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e170c867be768031c1668c571bcc1b0c4d6249a467ce891e43d0e53c3cf33. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:46Z), 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/QMZW62200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca51b5e4f1e753789941c51b6eb2649b3806294355aa31ea6087fc8ccbed292. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:16:47Z), 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/QMZW62200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9705cbe6bba817caf1edf860487da53fc3ac72616dd8608b43082b67dba79a8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QMZW62200365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2dfdf4e2c2240e191626f57c8befd90e8d60a5e25833ddd5d1927c3c64b010. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QMZW62200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf29a712da42e0ff3372f6a70ac6468fd62246565d5f1526dceec9593117c46c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QMZW62200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2b91c173ca5e31cb8807edfdc7f35f66945c7aa9828854e9e696a296babaf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMZW62500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3578c8b0b4bbe2997654855f1c6f25e7deeee65290fcf1f803cba5b2ac608e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMZW62500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc676738a536c422b89763009d3c225b274260270e3ddb37af75bf3b3606de80a. 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/QMZW62500512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe47b7bfd9a08e07e14c5750e384337c8f91c8f7a63e4cf166c64f4f9d1bf763. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QMZW62500513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bfd3684386aeda1d4ae2e3c2b0518dae1e8588fe66f9beb7d7e745a63d2efd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMZW62500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c63627d4c51a4ae6e467e2bd8d5f152f54f38a4f75b9dcd61b81680d6d15043. 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/QMZW62500515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb11a4f234135e3dc96e580b70a3bcc3aedbfadb8156f520deae6b31ff5f3d3a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMZW62500516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85982436c2b30217e1f45a12491968d897463c1b4f3b572596b26a101510b1ef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMZW62500517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bf11520df15b6b8df54000f72e055ef5fb69ac711c8cc7818531835937611a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QMZW62500518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5b3b3930fe9c0a3a731df71c89e3180b0ce852908a50261fe9c65e22350180. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QMZW62500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bc46b3cd37da6bb5f9b2ccc6adb638b6baa63fbc6a22363187ac1f219b801e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QMZW62500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc14fad6b69736aa723a6d433ff113f8b01a67b724c9f519020a0d2c80865a99. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMZW62500521.