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 0x6794d0e566ba942e5aa574cc52277d5cf13d0d32be1e1e567289d7cbf8017ee9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792791de-0f2e-47b4-acd9-9b824abee76e.json and https://artists.proofprofile.net/proofs/artist/792791de-0f2e-47b4-acd9-9b824abee76e.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 0xb573d70ff65ed90a826eed8d840538e2826be004e91c69cc94860e08b0e4dc6c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NZPB12400677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd4bc699b669268073ecb7a33af6019ef5187f83d822a386c35cbb9b7a70dbb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:11Z), 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/NZPB12400676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e4d74103dc2b2616bd82c1774880260e97dfe0ff788a305f10c383bfaf2aa9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAS2260983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3366245f13771432ec9947fc130241792e0ea9ba1b1a827d24fd0d7d8e17f15. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NZPB12400674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6892c53484591f082062803b4897641f5a81472d66b235f026d6928254c3ed3d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:35Z), 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/NZPB12400678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3960469b9a521c4e34b48bff61e79b1134993909bb67d7142221a5d4600da76. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM22379772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a421bd9b4ec7e2a2ebcc793065b2b40a8f701fd90e7a0cb994fb6a1f653fa6a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWR2308895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705eaf22a382526eebd1727c6e974fa922779de753780f1913030dc72616cba. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZNWR2308898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b729a3d30b2dc0656871c7bb96c96f992d7decc6882bd6f0e9def568a5fad58. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:41Z), 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/USHM82397659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efc3cccca5d92f5d324c684777d7aa41b77af09094baebedfd53fdaae2b2d7e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:53Z), 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/NZPB12400679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15401a1af44dbcec9a437a21742c89031620959dfa6e4e47cd2e095818755a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:46:17Z), 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/QZWFG2330264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe175e6a2baecc514cad9a466cfce567cef0cd1d413dd3e88241748a230a061a8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NZPB12400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e215b2196118385468f230e0c1847feaed84ad5f3b9a82bac13d1664de11d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NZPB12400675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e3b1545f747b4325f9efd2393527ff15bde38cf8488c4b67f79ad6495a67c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:47Z), 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/NZPB12401270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b7048779ec8e86f141993fa0e5c8a6a8872c3eb7c521ffd8f0ef6d098bdcf8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NZPB12401269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ddc7ac3a54fc2c897860c040147532c00481de52053548bcc396867e9672cf. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:53:30Z), 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/NZPB12401268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572babe2acf19507472d18a0c6f71004d411efa0050a91546e6a54933c90121e. 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/NZPB12401267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b2e3d0ae7592cc79adac30c0ba47aeb394c7bf1b40b0c867eb98290542a6b7. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/NZPB12401265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2d355f74a76a560039f4458423437e0628ba97392b212b99efcc7863257bc1. 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/NZPB12401264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f9404b3208dd4d836f097699e5f4d168615e421dc27a88ed131054f46694e8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NZPB12403748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102ae6298d3d95376e1c27c91e83785ce33886e23443109281615563d5bea0c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NZPB12501855.