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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e82a0235c944e52f44cc1d65b369b8c49616a3cef021f5cb9aa01467c070b. 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/3e6ec83d-d976-4a0a-9835-f88a416d357e.json and https://artists.proofprofile.net/proofs/artist/3e6ec83d-d976-4a0a-9835-f88a416d357e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc452e6b4b823454e1055a79bb0978c0e7df90fcbf47ac5738fa5d3492c07592. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ22B1757553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed18ae57d7d5f1484d8a822b5a78d57c11591fecdf21a2a1cc32ce1215b94de0. 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/QZDA71829027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b1afd590387511c9d1785ddaec2b37779b203110376708f49d6592522195d. 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/QZES71805920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea7323f4f873bbabfe1f1d5c97eaa0e4b250e007725db5c2bab45c489ac46f5. 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/QZES71805925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ec13a913abcb8eeab37180e4951e804e8a3ac3d4b13de8ad073a9021865aa. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZES71805926.
Tales of the Loa (The Complete Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb06de8ff3bdd602b8bf4f9040bf6c8955612264ba2215da98168fe64708ab0. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZK6P1954491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c29d7abdaea418b8a532adf7243553ac14b9ccbad6c6985427815fcd0a4c79a. 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/QZK6P1954493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b65241ead357dbed6107234a733f045804fe6bca45b60c0e9b00b56c5c592. 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/QZFZ72033467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf943300c1dfcd448476ffae931ddee519207d9d792ab8dbee8b8f4eff840d641. 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/QZHNB2033836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e3df88cb2120c6d2ab26a4c67f200b4e489b15c994188be74b8c73e7647be3. 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/QZNWX2020447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256345be46a51680365ba42f7c4b7131629d6c65369204da36622b543e880617. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZNWX2020449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8f2d552005af093a5d848c6e982257316374bdce603fdeea9a180040fae8d1. 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/QZNWX2020451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44721db47966eb91260597168c30ca14430f5071f1c8a69dabb093ccb5392506. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZHN62191133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8400c46a32b2c94f6dcd16629bee8f8e6c0d370ed7801b0d7a2d51dfcf5d9fa. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZHN92148677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bcea7d9995948894fea0bada566a9714bf6ac19388063de29306d7c7700a3b. 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/QZNWW2106112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175441f43239353c4d3d31eeef48874526fb4564db3db81dd21b543ca6a2aa62. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWY2151868.
Lord Sephestus Shadowdancer (Choral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd578e239ff84ca9223d17a9b75e478296562852f41df587070037be29c752280. 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/QZPJ32347306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6cfa7e0d886ea03e1dba271fec7d52a58314c342e297fbf0557329ea3d47c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZZ7R2445293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6b7b9c5fe9fab1565091b48d143b587b17feee17a9a16526bf5a7ed1102cf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ42525497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdf5df3555e6fb642d01d3af99b45ea4ab8cb296b6899297f661dd3d25b7edc. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZHN72538733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f294af0833a7a2727e665c57bcebe6e184c604967894d6aa4f6ce2bcb34fd. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEN2514450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7af9191c0227c8e5593c90fea59d736de5ce75e6a4a0207f0e00632a9edaaa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZPJ32469522.
I Am Gonna Claw (Out Your Eyes then Drown You to Death)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fa228e0ac0e76ac00b07869d9783645751be8200a15fa85c4ea88d4b9cd33b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZZ7Q2535115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7033b0a57547c2e1aaa691016786672e6f262532d0525c4f2389b436c711b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZPJ32508694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5aeca3ebb50aa7d96f6118dbaef65a7596f5089e645ada4145ec965c16fbd8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7R2595546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec9b8703eac82c97d558eaf8c67d4064ba0dcf3c8393810b729ea0a4708a70. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM2PV1719516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230f83557f76fd19bdafefa1e45e4a1266457d639724b878d3c51b04a844cae. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USE830908822.