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 0x9024734d002750a2539de9bcae64d560cb8ffaac4c948704ce133afa374d9673. 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/0342135f-5ccd-44b0-89d7-b45c2ce34d27.json and https://artists.proofprofile.net/proofs/artist/0342135f-5ccd-44b0-89d7-b45c2ce34d27.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 0xb213ff0d6f83fc29e4450648c0df43459ec60b426ab3c6f06be8f14a38c1295f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:25Z), 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/QZTB92354126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213ff0d6f83fc29e4450648c0df43459ec60b426ab3c6f06be8f14a38c1295f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB92354126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44599df23ed242ebca6ee4a0f3594c037103fc2bd95a7c536785b95ba68bdf27. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:25Z), 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/QZTBF2356503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1952ddd6f5c69f32c43dfe636ede1785606ec4f7643df43707f6e43e5dd02. 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/QZTBF2356507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f823f2af043ab398120aaad28e76f8e41e797a5ec1cd3dfa396fbeb7b3fe3f. 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/QZFYZ2461431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4229a00af274618c4b4fbf4db067c68eef3b18d283100c5b7aaecd69880d90b1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYZ2464319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7ce05c47f91091c71610517d52685f6ac89e5ee5ac62c2f080102462f4ecbb. 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/QZWFH2474244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c54defac22f368fcda6904ef6447421ac8afca08c887f96e868e213dc743bb. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZZ7V2458573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc01d212a839b534f0c17e61f11b42948ead121d622bea6e3a8c26e879b8733b. 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/QT3EZ2446854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc01d212a839b534f0c17e61f11b42948ead121d622bea6e3a8c26e879b8733b. 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/QT3EZ2446854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118bc4c6017d398da50cefb00cf23a3e8ab595135867fb25ec76fc6b372ae3b9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ62532953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aea15ab23b63b5ecb219ef837decdc076c19e908293989d54b22f61b00f8b3c. 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/QZG2X2414162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe846f5a4a87bb6c98efb038c1af77fab59bc7d1e3464d8ed2d8fa03f31f3405c. 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/QZHN92505334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb85f62bd6ff494b5190613df5047e93ab4a62909d8f80b10d88e08f811bce7e. 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/QZK6P2558680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dd1d0fc5e2fdf59ef7c859dfd3f1577efda95bd88f1670b3a0a187af735fe3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:57Z), 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/QZG2X2419554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afce22a260450d40e3e2950a07a6e2b6fa04bc7fa2afd57e407a967030f782c. 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/QZG2X2419860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9c39cac78e4ef4f46b1138598a4c8627099f61d9a6b212ea4ba7cac8eaf240. 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/QZG2X2505738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0e30fed48cbdf5d2f4ecadd70e18ebcd5b5473862e37d581b03d0b077ec2f3. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:54:58Z), 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/QZG2X2505739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa857c30a28261d9c2bf721a85d21de27b23830886787aad18689ba468cc07d. 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/QZG2X2505740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdc7575b94d08fcc75b8c708a023776187d3db448575a9c63e5b2193c12ab30. 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/QZG2X2505741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f883bb72f3f8fa2b408b74ce56fd82ccbaa299691deea1791b08e7a9c05099. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZG2X2505743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4eb07a8d271aab120d2cb8020e5bad203a049128a30ea2a5cd765c418a3034. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZG2X2506778.
Sabor A Tribal (Special Colaboration Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11faccf86347dd509fd7afd57e3e8b465dfe1385056c75c3f09dc0bca8b4e3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2450255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b0d3c6fdc98efbfce736a7dc049972c6a3104cc2ec0f8010ac7dfa339b4aa. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN32427363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9656c01d5f2eb2c655d52d223d98bcb6fd8040c35b9a8ba656cb8e1489a6deea. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZG2X2403738.
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