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 0x73755f27c3d29304e5f1421cc394a6fcb2f7f78b5271fe822095fcadb71bbc06. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52bdcb3a-2800-4309-a5ff-fb8fd170a1a3.json and https://artists.proofprofile.net/proofs/artist/52bdcb3a-2800-4309-a5ff-fb8fd170a1a3.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 0x9a226c7f8f0b2b615cd220bfbdb017aa7524d40237f9c734039b87e1c91490fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAY2529851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf6259095a31488f7ba6cfb3c5d4bb35df335d2c586942b3b333940baaeab1d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAY2529852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabae6a68da4dcd54b043d1beca76c95648853c6074afc66f55f678c0e568d871. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAY2529853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c4b5ad9772608f87a39774b81c97c1b5f9c253cef7af2082200587739374d4. 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/QZTAY2529854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f5f9ef4626ce15ab2dea42f7c684bec25f024dd138adb3e17faabc917439f6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:20Z), 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/QZTAY2529855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f3ae1586fbb61bedc0f3e62250b1f463485dc10e4c6cd8954179c01541348. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAY2529856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8394b5a03a3321d1ef99bd1310eb76db2b6d0c624a1042fc72d56fc3744aab4c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAY2529857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2e1b0139995cb99bd39846e66d0fe937680adef2665612fff33184dfe105de. 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/QZTAY2529858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759155db48538e78aaba5fed365d6bc3177ebbc3d1c2c8e7100f48cb0f259f5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:32:37Z), 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/QZTAY2529859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6dec4e37f6dd15ac7e3ae02bf0cb3c9fbb7921a15cd6efa5820ca0c69cd8c2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:21Z), 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/QZTAY2529860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ed2f392f533712ab2b4de5f1834d3349a1a21c164c2aad6355f4487bcb7d67. 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/QZTAY2529861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed856acc93e715142bdffe27d9da6f50973481b46fa9de1cc7e22df3eea148. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:01Z), 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/QZTAY2529862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b38fbc1d748521a13695055e6aa7cdbede6cd1307423f2bd75489ee77f20c3. 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/QZTAY2529863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501a6125c9cbdb1788b2f13f32b16683fd4b8a88680c8359914a7cff317b2217. 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/QZTAY2529864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be8e5d3a38be5c78d4edc07f3f505c2fceb173d2c35bede1f82ef3d3a8149b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:50Z), 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/QZTAY2529865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c9ffa2fc84ab5e4f6b6b5834aaec6e2934f97cefa79023579b5b17a65302c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB22550244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0919f10c7f4e80c2e53bea33cd0f2b09beb3f4e5a0ae6e1bce9fb7d29f01a86e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTB72512113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea43f1597e1a33a4bb04356fa5f3ef91b155434918cffa1ba0916470921deee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTB92538832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d6a1f59b62c44e40eee8259ffde7585fda95a9c0c83b1eec59376759aacf9e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBE2570202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3927c8a68cc8c5f89da8f9becb2ba863c2bb2f23c56819cd3a6052c6279c9cc. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFG2562662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d82ca7fe000762e581afd611e66ba8a19d551ae4dc2b1e52d9f16ebcacef06d. 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/QZWFG2562663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c28e0fb6daeff282465e717221f3678bbac9078bd5e95763c3a251f807b6ad. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFW2535565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d5c7164c02ac17780c2d7ac5aaff94c260c8644ab05f2af803a97610514737. 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/QZZ7Q2521780.