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 0x63309ab6778420b039c92f14c4989f556e3fe29bd65227effd8d7ed6cd1665e1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa77344c-5114-43d3-8c83-2a55ead18c10.json and https://artists.proofprofile.net/proofs/artist/aa77344c-5114-43d3-8c83-2a55ead18c10.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 0x20a3b378a0a5a2a1140b0a33e1a92a1d869c19d059952251593709c5bd4bb87d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF412300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556be41240f1c0171fd73b4e6456314b99dda1dbee0ba85f9ba1353b13a37f72. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8504bbfbbf361bf18bfe240c3b036e1863bfd7b87286301670e92c93b4bdb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412100274.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93def553746588bae3425b77a27f7eb950fd68cef5fcb572a5e22e0c7e09a540. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411701836.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a23c9f82f585100dc5934f35d66062fcec8fd8b9164051b0c96ecce7a8b71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411701767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bf2c41d64ad708462b1cdce27a0fcdc8cc1934ceaf5c6e0c4e8067aae86019. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF411701827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea2334d415e2f5f36c6257ad97a94b639b4f46a744715757dcc87e4e5ccbc47. 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/ARF411701325.
Vintage Café - Lounge & Jazz Blends (Special Selection), Vol. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bb3436ca5eee37042c993bb7a6420524cf73750b655d18b636a93eec769cff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9358a0803df91f31e18b5d8a0307dab8ff575d5ac48e7aa913b97eded28acb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bea8f506c00509ba2346eda565c62d40001fa1e03c59da27a20ed29992b0164. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF412000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b927bf98e7d6ee88acd5bca70c027be9249d8edc7b7b674145a41408b8ee8. 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/ARF411701690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccda2cbdab391df16475111d2f9e97f9ea84672a7e3957e338c84feaef04a17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF411600141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb9a94e5ed044e9ac9d2f37f595e207b6016d8ad1b53f7735f2f1be7b12f4e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8b1e15819578d6732da7335b4452f3e0e93c2c0b002b0c95b56be76b18e1a0. 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/ARF412300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057fc6cd9a603bbc425725bb7ba9c04d5ddc285290ff0395dd1145696d769d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF411900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ca2a62777b291f8e41a1d13d6221a049147163026e4ffe064bc7c712fa059. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF412300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4e818f731abaeb6dfe7c1d6aa1849debef8ff363139d40352fdce5269e4daf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF411600496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409bdb0ed52fdd92c2a696aeb93733878626697e3be32c3277e6a6752ca10e9d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a05ecce2dbbb2491488af2aec201444bfc14e05b20341ef1c14b82d7422c5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARF412300438.