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 0x83b06d81675289686243d52b39513f7ba3951e98273624acbe1cf291e59f798b. 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/5f20fcc2-b4d6-45df-8bfd-59e440241d94.json and https://artists.proofprofile.net/proofs/artist/5f20fcc2-b4d6-45df-8bfd-59e440241d94.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 0xe48e9a15962af2bf69661464670dba563433c56548297be76d057711be2953c8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:05:34Z), 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/GX89G2319259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dcd937f8eada4189f700d6b02f2ea821c433e99eb8f2b3f1608050d751a30d. 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/GX89G2330277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709ee90d2b9187de884320107462037cc532d4c1e1c87f41e04914ea30c69e73. 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/GX89G2341824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370340a0b123d813d9ff9396a50f4086ea052ef3c6b8de0816553ca81d5ab967. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:42:25Z), 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/GX89G2355117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94cc27cb3d532bee5a966d406e230b1662562b68b4950320b0df182647a392. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:48Z), 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/GX89G2383257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50aff9020de7aae4b2977f220dcea2427e9bfe2392a7ba548b67c068b0a1d81. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:46Z), 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/GX89G2393263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdb3484b1dd302dc29fe7e3353ea6fa481a2e7a0b974372dd9ad450f935f4f3. 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/GX89G2303288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776f60af42528d8e0116337c69af8de51e59b4f8305a8894a2df53f3eedb3cb. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:46Z), 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/GX5MX2316284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb444b10a52133b78aef7ef7c697a1f2d04fcb7c9d01963ae16e089ad2f4bfb2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:24Z), 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/GX5MX2337117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f84631965a09fae06d69f522ba526ff8b728d67fda779e93dbcb98fda15478. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GX5MX2360889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8788b8caf19dbe8243972d51559bc651c6f27bf6ed4b3ef65b83cfb9f0763cb. 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/GX5MX2383786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645a3842d847a55f95d01591493a5b08d45306a188d90a29877beebae7f331db. 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/GX5MX2302244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3086126a7db10da5d666f9f66a9262981356b0ad8f625346e1c16bf209ef47. 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/GX5MX2359954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3c86039647025c65c25b6638ca6622cadfe8d43ba4da57aa25964bd09e5a25. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GX5MX2393908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af3cf0e5ce6660be1e49a6d476ae4a96a9789ab99d210dd0713588bcc44dbcc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:32Z), 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/GX89G2497482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35db99d8ae4138b14f6b9a4524752c85c0909b7c5340fe3cf8d741983e4eac2d. 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/GX89G2455353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2ef39d75366c7606f0d93db8e07db13fbd2dc158af5c6cf06782b0089d8fe. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:46Z), 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/GX89G2400834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001974ec34161c3173d94c3dd2aa0eb0434e4ad1d46b40c3023700d4e3b51f9. 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/GX89G2434647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d328ea8f74fa116cf5415f40504cb482c00398ef94b1d80198356cec5562fa5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GX8KD2513920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8941607d4edbffc88b3433d726f089c01a7b1dcb45a92fa28a339c85e25ce5af. 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/GX8KD2539639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707a00d0321d8dda02a60d818691112f0a8357770c90a1ed183d926b60628669. 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/GX8KD2590385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8918bd12254f52e090ed218659b1436e457b247cd60fdcc2ff6ca5b209e54540. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GX8KD2518159.