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 0x6f9f73f6ee0acbb47849ec164fd74dff11ee1bd49f8c92ac455cf8fb8875fd57. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa84b541-dbf1-4964-9de4-73e8f13bd501.json and https://artists.proofprofile.net/proofs/artist/aa84b541-dbf1-4964-9de4-73e8f13bd501.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 0x52e6f36f6351ed981abc6dc1776a048520bc143c4a3feb7632c157ef02b53ba0. 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/HUB781200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8c67f26b1deb015159aa467cdb62245753c734f03a8bc39ef372c8f848be14. 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/HUB781200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabe5aedbe4ca31f531235a355b9d6bdea997b9f935102859c2eb1c5e480fe8b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUB781200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977e20f9ff83997c768b1ed28dc9568dd3a5c004692ae48f660ff5d31e60c749. 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/HUB781200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ed7c65e41534adf39a0e62c33de15e3a836dabc3045533895784a83759b705. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/HUB781200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5141b0b86fbc6107e9a679f055158c621730973a6e1a1167627c755d13de4d73. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUB781200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd618fe353d8a11bb47d1cb531f14cab180f53fcb8f1f2faa525afc54a452e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:10Z), 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/HUB781200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ddc33d87c6a53aa04d3658336a0ac1cfd4fb266a146b65acada64ef4c6584. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUB781200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf688a392474cb9e8b88200d1b6df95ebed0882f46c54a6947aa856cde6521ae0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/HUB781200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b8b96f436ec511dc9b8db3e771e98ba76de60faedcbce6c77a070e358608d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUB781200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72724829481caf5685375c94f72f2af04a8bbafe0d2e2619a21b3e4a7562df16. 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/HUB781200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4849c68ae15b3ce015762e6aaeb53be2807229cc134b91f4a44774cdb574b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HUB781200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eea20b7dd7593ff1fdc5b179b6539ce9a5413aee0b3c6da2a1c9d15711c70d. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/HUB781200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cdf51d61f41a25dafe5715dcf89e60f11ef757ba18ae0710c86c18df70ae3b. 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/HUB781200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf7860d4ba82b53be0443057829a0a0d6d4fb6be37bb968464247828c943ae. 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/HUB781200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0643873da8f2c73e69a33b34e228cf8793a017ba4cbe7f0e3e1468ead8c397e. 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/HUB781200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be475b7246f7e92591a4632b92f5fbd93e2bd58210ca5c203eac864d1db73f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:43Z), 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/HUB781200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b15c234c6d88213aed4f26954db760e8795273da2e7cdd62562102e0c94df. 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/HUB781200023.